fix: merge submodule 'Lab3'

Lab3/.editorconfig

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+root=true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_style = tab
+indent_size = 2 
+insert_final_newline = true 
+trim_trailing_whitespace = true
+
+[*.cs]
+indent_style = space
+indent_size = 4 
+

Lab3/.gitignore

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+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+##
+## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
+
+# User-specific files
+*.rsuser
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# User-specific files (MonoDevelop/Xamarin Studio)
+*.userprefs
+
+# Mono auto generated files
+mono_crash.*
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+[Ww][Ii][Nn]32/
+[Aa][Rr][Mm]/
+[Aa][Rr][Mm]64/
+bld/
+[Bb]in/
+[Oo]bj/
+[Ll]og/
+[Ll]ogs/
+
+# Visual Studio 2015/2017 cache/options directory
+.vs/
+# Uncomment if you have tasks that create the project's static files in wwwroot
+#wwwroot/
+
+# Visual Studio 2017 auto generated files
+Generated\ Files/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+# NUnit
+*.VisualState.xml
+TestResult.xml
+nunit-*.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+# Benchmark Results
+BenchmarkDotNet.Artifacts/
+
+# .NET Core
+project.lock.json
+project.fragment.lock.json
+artifacts/
+
+# ASP.NET Scaffolding
+ScaffoldingReadMe.txt
+
+# StyleCop
+StyleCopReport.xml
+
+# Files built by Visual Studio
+*_i.c
+*_p.c
+*_h.h
+*.ilk
+*.meta
+*.obj
+*.iobj
+*.pch
+*.pdb
+*.ipdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*_wpftmp.csproj
+*.log
+*.tlog
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Chutzpah Test files
+_Chutzpah*
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opendb
+*.opensdf
+*.sdf
+*.cachefile
+*.VC.db
+*.VC.VC.opendb
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+*.sap
+
+# Visual Studio Trace Files
+*.e2e
+
+# TFS 2012 Local Workspace
+$tf/
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# AxoCover is a Code Coverage Tool
+.axoCover/*
+!.axoCover/settings.json
+
+# Coverlet is a free, cross platform Code Coverage Tool
+coverage*.json
+coverage*.xml
+coverage*.info
+
+# Visual Studio code coverage results
+*.coverage
+*.coveragexml
+
+# NCrunch
+_NCrunch_*
+.*crunch*.local.xml
+nCrunchTemp_*
+
+# MightyMoose
+*.mm.*
+AutoTest.Net/
+
+# Web workbench (sass)
+.sass-cache/
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.[Pp]ublish.xml
+*.azurePubxml
+# Note: Comment the next line if you want to checkin your web deploy settings,
+# but database connection strings (with potential passwords) will be unencrypted
+*.pubxml
+*.publishproj
+
+# Microsoft Azure Web App publish settings. Comment the next line if you want to
+# checkin your Azure Web App publish settings, but sensitive information contained
+# in these scripts will be unencrypted
+PublishScripts/
+
+# NuGet Packages
+*.nupkg
+# NuGet Symbol Packages
+*.snupkg
+# The packages folder can be ignored because of Package Restore
+**/[Pp]ackages/*
+# except build/, which is used as an MSBuild target.
+!**/[Pp]ackages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/[Pp]ackages/repositories.config
+# NuGet v3's project.json files produces more ignorable files
+*.nuget.props
+*.nuget.targets
+
+# Nuget personal access tokens and Credentials
+# nuget.config
+
+# Microsoft Azure Build Output
+csx/
+*.build.csdef
+
+# Microsoft Azure Emulator
+ecf/
+rcf/
+
+# Windows Store app package directories and files
+AppPackages/
+BundleArtifacts/
+Package.StoreAssociation.xml
+_pkginfo.txt
+*.appx
+*.appxbundle
+*.appxupload
+
+# Visual Studio cache files
+# files ending in .cache can be ignored
+*.[Cc]ache
+# but keep track of directories ending in .cache
+!?*.[Cc]ache/
+
+# Others
+ClientBin/
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.jfm
+*.pfx
+*.publishsettings
+orleans.codegen.cs
+
+# Including strong name files can present a security risk
+# (https://github.com/github/gitignore/pull/2483#issue-259490424)
+#*.snk
+
+# Since there are multiple workflows, uncomment next line to ignore bower_components
+# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
+#bower_components/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+ServiceFabricBackup/
+*.rptproj.bak
+
+# SQL Server files
+*.mdf
+*.ldf
+*.ndf
+
+# Business Intelligence projects
+*.rdl.data
+*.bim.layout
+*.bim_*.settings
+*.rptproj.rsuser
+*- [Bb]ackup.rdl
+*- [Bb]ackup ([0-9]).rdl
+*- [Bb]ackup ([0-9][0-9]).rdl
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# GhostDoc plugin setting file
+*.GhostDoc.xml
+
+# Node.js Tools for Visual Studio
+.ntvs_analysis.dat
+node_modules/
+
+# Visual Studio 6 build log
+*.plg
+
+# Visual Studio 6 workspace options file
+*.opt
+
+# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
+*.vbw
+
+# Visual Studio LightSwitch build output
+**/*.HTMLClient/GeneratedArtifacts
+**/*.DesktopClient/GeneratedArtifacts
+**/*.DesktopClient/ModelManifest.xml
+**/*.Server/GeneratedArtifacts
+**/*.Server/ModelManifest.xml
+_Pvt_Extensions
+
+# Paket dependency manager
+.paket/paket.exe
+paket-files/
+
+# FAKE - F# Make
+.fake/
+
+# CodeRush personal settings
+.cr/personal
+
+# Python Tools for Visual Studio (PTVS)
+__pycache__/
+*.pyc
+
+# Cake - Uncomment if you are using it
+# tools/**
+# !tools/packages.config
+
+# Tabs Studio
+*.tss
+
+# Telerik's JustMock configuration file
+*.jmconfig
+
+# BizTalk build output
+*.btp.cs
+*.btm.cs
+*.odx.cs
+*.xsd.cs
+
+# OpenCover UI analysis results
+OpenCover/
+
+# Azure Stream Analytics local run output
+ASALocalRun/
+
+# MSBuild Binary and Structured Log
+*.binlog
+
+# NVidia Nsight GPU debugger configuration file
+*.nvuser
+
+# MFractors (Xamarin productivity tool) working folder
+.mfractor/
+
+# Local History for Visual Studio
+.localhistory/
+
+# BeatPulse healthcheck temp database
+healthchecksdb
+
+# Backup folder for Package Reference Convert tool in Visual Studio 2017
+MigrationBackup/
+
+# Ionide (cross platform F# VS Code tools) working folder
+.ionide/
+
+# Fody - auto-generated XML schema
+FodyWeavers.xsd
+
+# VS Code files for those working on multiple tools
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+*.code-workspace
+
+# Local History for Visual Studio Code
+.history/
+
+# Windows Installer files from build outputs
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
+
+# JetBrains Rider
+.idea/
+*.sln.iml

Lab3/Lab3.Exercises.Register/Dog.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Lab3.Exercises.Register
+{
+    class Dog
+    {
+        public int ID { get; set; }
+        public string Name { get; set; }
+        public string Breed { get; set; }
+        public DateTime BirthDate { get; set; }
+        public Gender Gender { get; set; }
+        public DateTime LastVaccinationDate { get; set; }
+
+        private const int VaccinationDuration = 1;
+
+        public int Age
+        {
+            get
+            {
+                DateTime today = DateTime.Today;
+                int age = today.Year - this.BirthDate.Year;
+                if (BirthDate.Date > today.AddYears(-age))
+                {
+                    age--;
+                }
+                return age;
+            }
+        }
+
+        public bool RequiresVaccination
+        {
+            get
+            {
+                if (LastVaccinationDate.Equals(DateTime.MinValue))
+                {
+                    return true;
+                }
+                return LastVaccinationDate.AddYears(VaccinationDuration).CompareTo(DateTime.Now) < 0;
+            }
+        }
+
+
+        public Dog(int id, string name, string breed, DateTime birthDate, Gender gender)
+        {
+            ID = id;
+            Name = name;
+            Breed = breed;
+            BirthDate = birthDate;
+            Gender = gender;
+        }
+
+        public override bool Equals(object other)
+        {
+            return ID == ((Dog)other).ID;
+        }
+        public override int GetHashCode()
+        {
+            return ID.GetHashCode();
+        }
+
+        public int CompareTo(Dog other)
+        {
+            int genderComparison = Gender.CompareTo(other.Gender);
+            if (genderComparison == 0)
+            {
+                return Breed.CompareTo(other.Breed);
+            }
+            else
+            {
+                return genderComparison;
+            }
+        }
+    }
+}

Lab3/Lab3.Exercises.Register/Dogs.csv

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+123;Reksas;Buldogas;2014-01-01;Male
+124;Margis;Dalmantinas;2014-02-28;Male
+125;Bitė;Senbernaras;2008-07-17;Female
+320;Rikis;Taksas;2012-01-07;Male
+123;Reksas;Buldogas;2014-01-01;Male
+415;Pifas;Taksas;2014-07-07;Male
+420;Markas;Dalmantinas;2013-02-28;Female
+123;Reksas;Buldogas;2014-01-01;Male

Lab3/Lab3.Exercises.Register/DogsContainer.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Lab3.Exercises.Register
+{
+    class DogsContainer
+    {
+        private Dog[] dogs;
+        private int Capacity;
+        public int Count { get; private set; }
+
+        public DogsContainer(int capacity = 16)
+        {
+            Capacity = capacity;
+            dogs = new Dog[capacity];
+        }
+
+        public DogsContainer(DogsContainer container) : this(container.Capacity) //call another constructor
+        {
+            for (int i = 0; i < container.Count; i++)
+            {
+                Add(container.Get(i));
+            }
+        }
+
+        public void Add(Dog dog)
+        {
+            if (Count == Capacity)
+            {
+                EnsureCapacity(Capacity * 2);
+            }
+
+            dogs[Count] = dog;
+            Count++;
+        }
+        public Dog Get(int index)
+        {
+            return dogs[index];
+        }
+        public bool Contains(Dog dog)
+        {
+            for (int i = 0; i < Count; i++)
+            {
+                if (dogs[i].Equals(dog))
+                {
+                    return true;
+                }
+            }
+            return false;
+        }
+
+        public void Put(int index, Dog dog)
+        {
+            dogs[index] = dog;
+        }
+
+        public void Insert(int index, Dog dog)
+        {
+            if (Count == Capacity)
+            {
+                EnsureCapacity(Capacity * 2);
+            }
+            for (int i = Count+1; i > index; i--)
+            {
+                dogs[i] = dogs[i-1];
+            }
+            dogs[index] = dog;
+            Count++;
+        }
+
+        public void RemoveAt(int index)
+        {
+            for (int i = index; i < Count; i++)
+            {
+                dogs[i] = dogs[i + 1];
+            }
+            Count--;
+        }
+
+        public void Remove(Dog dog)
+        {
+            for (int i = 0; i < Count; i++)
+            {
+                if (dogs[i].ID == dog.ID)
+                {
+                    RemoveAt(i);
+                    return;
+                }
+            }
+        }
+
+        private void EnsureCapacity(int minimumCapacity)
+        {
+            if (minimumCapacity > Capacity)
+            {
+                Dog[] dogsClone = new Dog[minimumCapacity];
+                for (int i = 0; i < Count; i++)
+                {
+                    dogsClone[i] = dogs[i];
+                }
+                Capacity = minimumCapacity;
+                dogs = dogsClone;
+            }
+        }
+
+        public void Sort()
+        {
+            bool flag = true;
+            while (flag)
+            {
+                flag = false;
+                for (int i = 0; i < this.Count - 1; i++)
+                {
+                    Dog a = this.dogs[i];
+                    Dog b = this.dogs[i + 1];
+                    if (a.CompareTo(b) > 0)
+                    {
+                        this.dogs[i] = b;
+                        this.dogs[i + 1] = a;
+                        flag = true;
+                    }
+                }
+            }
+        }
+
+        public DogsContainer Intersect(DogsContainer other)
+        {
+            DogsContainer result = new DogsContainer();
+            for (int i = 0; i < Count; i++)
+            {
+                Dog current = dogs[i];
+                if (other.Contains(current))
+                {
+                    result.Add(current);
+                }
+            }
+            return result;
+        }
+
+
+
+    }
+
+}

Lab3/Lab3.Exercises.Register/DogsRegister.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Lab3.Exercises.Register
+{
+    class DogsRegister
+    {
+        private DogsContainer AllDogs;
+        public DogsRegister()
+        {
+            AllDogs = new DogsContainer();
+        }
+        public DogsRegister(DogsContainer Dogs)
+        {
+            AllDogs = new DogsContainer();
+            for (int i = 0; i < Dogs.Count; i++)
+            {
+                this.AllDogs.Add(Dogs.Get(i));
+            }
+        }
+        public void Add(Dog dog)
+        {
+            AllDogs.Add(dog);
+        }
+
+        public int DogsCount()
+        {
+            return AllDogs.Count;
+        }
+
+        public Dog GetByIndex(int index)
+        {
+            return AllDogs.Get(index);
+        }
+
+        public int CountByGender(Gender gender)
+        {
+            int count = 0;
+            for (int i = 0; i < AllDogs.Count; i++)
+            {
+                Dog dog = AllDogs.Get(i);
+                if (dog.Gender.Equals(gender))
+                {
+                    count++;
+                }
+            }
+            return count;
+        }
+
+        public Dog FindOldestDog()
+        {
+            return this.FindOldestDog(this.AllDogs);
+        }
+
+        public DogsContainer FilterByBreed(string breed)
+        {
+            DogsContainer Filtered = new DogsContainer();
+            for (int i = 0; i < AllDogs.Count; i++)
+            {
+                Dog dog = AllDogs.Get(i);
+                if (dog.Breed.Equals(breed)) // uses string method Equals()
+                {
+                    Filtered.Add(dog);
+                }
+            }
+            return Filtered;
+        }
+
+        public Dog FindOldestDog(string breed)
+        {
+            DogsContainer Filtered = this.FilterByBreed(breed);
+            return this.FindOldestDog(Filtered);
+        }
+        private Dog FindOldestDog(DogsContainer Dogs)
+        {
+            Dog oldest = Dogs.Get(0);
+            for (int i = 1; i < Dogs.Count; i++) //starts on index value 1
+            {
+                Dog dog = Dogs.Get(i);
+                if (DateTime.Compare(oldest.BirthDate, dog.BirthDate) > 0)
+                {
+                    oldest = dog;
+                }
+            }
+            return oldest;
+        }
+        private Dog FindDogByID(int ID)
+        {
+            for (int i = 0; i < AllDogs.Count; i++)
+            {
+                Dog dog = AllDogs.Get(i);
+                if (dog.ID == ID)
+                {
+                    return dog;
+                }
+            }
+            return null;
+
+        }
+        public void UpdateVaccinationsInfo(List<Vaccination> Vaccinations)
+        {
+            foreach (Vaccination vaccination in Vaccinations)
+            {
+                Dog dog = FindDogByID(vaccination.DogID);
+                if (dog != null && vaccination > dog.LastVaccinationDate)
+                {
+                    dog.LastVaccinationDate = vaccination.Date;
+                }
+            }
+        }
+
+        public DogsContainer FilterByVaccinationExpired()
+        {
+            DogsContainer Filtered = new DogsContainer();
+            for (int i = 0; i < AllDogs.Count; i++)
+            {
+                Dog dog = AllDogs.Get(i);
+                if (dog.RequiresVaccination)
+                {
+                    Filtered.Add(dog);
+                }
+            }
+            return Filtered;
+        }
+        public bool Contains(Dog dog)
+        {
+            return AllDogs.Contains(dog);
+        }
+    }
+}

Lab3/Lab3.Exercises.Register/Gender.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Lab3.Exercises.Register
+{
+    enum Gender
+    {
+        Male = 1,
+        Female = 2,
+    }
+}

Lab3/Lab3.Exercises.Register/InOutUtils.cs

@@ -0,0 +1,140 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+
+namespace Lab3.Exercises.Register
+{
+    class InOutUtils
+    {
+        public static List<Vaccination> ReadVaccinations(string fileName)
+        {
+            List<Vaccination> Vaccinations = new List<Vaccination>();
+            string[] Lines = File.ReadAllLines(fileName);
+            foreach (string line in Lines)
+            {
+                string[] values = line.Split(';');
+                int id = int.Parse(values[0]);
+                DateTime vaccinationDate = DateTime.Parse(values[1]);
+                Vaccination v = new Vaccination(id, vaccinationDate);
+                Vaccinations.Add(v);
+            }
+            return Vaccinations;
+        }
+
+        public static DogsContainer ReadDogs(string fileName)
+        {
+            DogsContainer Dogs = new DogsContainer();
+            string[] lines = File.ReadAllLines(fileName, Encoding.UTF8);
+            foreach (string line in lines)
+            {
+                string[] values = line.Split(';');
+                int id = int.Parse(values[0]);
+                string name = values[1];
+                string breed = values[2];
+                DateTime birthDate = DateTime.Parse(values[3]);
+                Gender gender;
+                Enum.TryParse(values[4], out gender); //tries to convert value to enum
+                Dog dog = new Dog(id, name, breed, birthDate, gender);
+                if (!Dogs.Contains(dog))
+                {
+                    Dogs.Add(dog);
+                }
+            }
+            return Dogs;
+        }
+        public static void PrintDogs(DogsRegister register)
+        {
+            PrintDogsHeader();
+            for (int i = 0; i < register.DogsCount(); i++)
+            {
+                Dog dog = register.GetByIndex(i);
+                PrintDogsRow(register.GetByIndex(i));
+            }
+            PrintDogsFooter();
+        }
+
+        public static void PrintDogs(List<Dog> dogs)
+        {
+            PrintDogsHeader();
+            foreach (Dog dog in dogs)
+            {
+                PrintDogsRow(dog);
+            }
+            PrintDogsFooter();
+        }
+
+        public static void PrintDogs(DogsContainer container)
+        {
+            PrintDogsHeader();
+            for (int i = 0; i < container.Count; i++)
+            {
+                Dog dog = container.Get(i);
+                PrintDogsRow(dog);
+            }
+            PrintDogsFooter();
+        }
+
+        public static void PrintDogs(string label, DogsContainer container)
+        {
+            PrintDogsHeader(label);
+            for (int i = 0; i < container.Count; i++)
+            {
+                Dog dog = container.Get(i);
+                PrintDogsRow(dog);
+            }
+            PrintDogsFooter();
+        }
+
+        private static void PrintDogsHeader()
+        {
+            Console.WriteLine(new string('-', 74));
+            Console.WriteLine("| {0,8} | {1,-15} | {2,-15} | {3,-12} | {4,-8} |", "Reg.Nr.", "Vardas", "Veislė", "Gimimo data", "Lytis");
+            Console.WriteLine(new string('-', 74));
+        }
+
+        private static void PrintDogsHeader(string label)
+        {
+            Console.WriteLine(new string('-', 74));
+            Console.WriteLine("| {0,-70} |", label);
+            Console.WriteLine(new string('-', 74));
+            Console.WriteLine("| {0,8} | {1,-15} | {2,-15} | {3,-12} | {4,-8} |", "Reg.Nr.", "Vardas", "Veislė", "Gimimo data", "Lytis");
+            Console.WriteLine(new string('-', 74));
+        }
+
+        private static void PrintDogsFooter()
+        {
+            Console.WriteLine(new string('-', 74));
+        }
+
+        private static void PrintDogsRow(Dog dog)
+        {
+            Console.WriteLine("| {0,8} | {1,-15} | {2,-15} | {3,-12:yyyy-MM-dd} | {4,-8} |", dog.ID, dog.Name, dog.Breed, dog.BirthDate, dog.Gender);
+        }
+
+
+        public static void PrintDog(Dog dog)
+        {
+            Console.WriteLine("Vardas: {0}, Veislė: {1}, Amžius: {2}", dog.Name, dog.Breed, dog.Age);
+        }
+
+        public static void PrintBreeds(List<string> breeds)
+        {
+            foreach (string breed in breeds)
+            {
+                Console.WriteLine(breed);
+            }
+        }
+
+        public static void PrintDogsToCSVFile(string fileName, List<Dog> Dogs)
+        {
+            string[] lines = new string[Dogs.Count + 1];
+            lines[0] = String.Format("{0};{1};{2};{3};{4}", "Reg.Nr.", "Vardas", "Veislė", "Gimimo data", "Lytis");
+            for (int i = 0; i < Dogs.Count; i++)
+            {
+                lines[i + 1] = String.Format("{0};{1};{2};{3};{4}", Dogs[i].ID, Dogs[i].Name, Dogs[i].Breed, Dogs[i].BirthDate, Dogs[i].Gender);
+            }
+            File.WriteAllLines(fileName, lines, Encoding.UTF8);
+        }
+    }
+}

Lab3/Lab3.Exercises.Register/Lab3.Exercises.Register.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp2.1</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <None Update="Dogs.csv">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="Vaccinations.csv">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
+</Project>

Lab3/Lab3.Exercises.Register/Program.cs

@@ -0,0 +1,100 @@
+using System;
+using System.Collections.Generic;
+
+namespace Lab3.Exercises.Register
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            Dog dog1 = new Dog(1, "Foo", "FooBreed", DateTime.Now, Gender.Male);
+
+            Dog dog2 = new Dog(2, "Bar", "BarBreed", DateTime.Now, Gender.Male);
+
+            Dog dog3 = new Dog(3, "Baz", "BazBreed", DateTime.Now, Gender.Female);
+
+            DogsContainer container = new DogsContainer();
+            container.Add(dog1);
+            container.Add(dog2);
+            container.Add(dog3);
+            InOutUtils.PrintDogs(container);
+            container.Remove(1);
+            InOutUtils.PrintDogs(container);
+
+            /*
+            DogsContainer container = InOutUtils.ReadDogs("Dogs.csv");
+            container.Sort();
+            InOutUtils.PrintDogs("Container", container);
+
+            DogsContainer otherContainer = new DogsContainer(container);
+            InOutUtils.PrintDogs("Other container", otherContainer);
+            */
+
+            /*
+            DogsContainer container = InOutUtils.ReadDogs("Dogs.csv");
+            DogsRegister register = new DogsRegister(container);
+            List<Vaccination> vaccinationsData = InOutUtils.ReadVaccinations(@"Vaccinations.csv");
+            register.UpdateVaccinationsInfo(vaccinationsData);
+
+            Console.WriteLine("Registro informacija:");
+            InOutUtils.PrintDogs(register);
+            Console.WriteLine();
+            
+            Console.WriteLine("Iš viso šunų: {0}", register.DogsCount());
+            Console.WriteLine("Patinų: {0}", register.CountByGender(Gender.Male));
+            Console.WriteLine("Patelių: {0}", register.CountByGender(Gender.Female));
+            Console.WriteLine();
+            
+            Console.WriteLine("Šunys kuriems reikia vakcinuotis:");
+            DogsContainer dogsThatNeedVaccination = register.FilterByVaccinationExpired();
+            InOutUtils.PrintDogs(dogsThatNeedVaccination);
+            Console.WriteLine();
+
+            string vaccinationBreed = "Taksas";
+            DogsContainer allDogsByBreed = register.FilterByBreed(vaccinationBreed);
+            Console.WriteLine("Šunys kuriems reikia vakcinuotis ({0}):", vaccinationBreed);
+            InOutUtils.PrintDogs(allDogsByBreed.Intersect(dogsThatNeedVaccination));
+            */
+
+            /*
+            Dog oldestDog = TaskUtils.FindOldestDog(register);
+            Console.WriteLine("Seniausias šuo:");
+            InOutUtils.PrintDog(oldestDog);
+            Console.WriteLine();
+
+            List<string> breeds = TaskUtils.FindBreeds(register);
+            Console.WriteLine("Šunų veislės:");
+            InOutUtils.PrintBreeds(breeds);
+            Console.WriteLine();
+
+            List<string> popularBreeds = TaskUtils.FindMostPopularBreeds(register);
+            Console.WriteLine("Populiariausios šunų veislės:");
+            InOutUtils.PrintBreeds(popularBreeds);
+            Console.WriteLine();
+
+            Console.WriteLine("Kokios veislės šunis atrinkti?");
+            string selectedBreed = Console.ReadLine().Trim();
+            if (selectedBreed.Equals(""))
+            {
+                Console.WriteLine("Šunio veislė neįvesta");
+                return;
+            }
+
+            List<Dog> filteredByBreed = TaskUtils.FilterByBreed(register, selectedBreed);
+            if (filteredByBreed.Count == 0)
+            {
+                Console.WriteLine("Šunų su veisle '{0}' nerasta", selectedBreed);
+                return;
+            }
+
+            Dog oldestFilteredDog = TaskUtils.FindOldestDog(filteredByBreed);
+            Console.WriteLine("Seniausias šuo pagal '{0}' veislę:", selectedBreed);
+            InOutUtils.PrintDog(oldestFilteredDog);
+            InOutUtils.PrintDogs(filteredByBreed);
+            string fileName = selectedBreed + ".csv";
+            InOutUtils.PrintDogsToCSVFile(fileName, filteredByBreed);
+            */
+
+        }
+    }
+}

Lab3/Lab3.Exercises.Register/Vaccination.cs

@@ -0,0 +1,26 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Lab3.Exercises.Register
+{
+    class Vaccination
+    {
+        public int DogID { get; set; }
+        public DateTime Date { get; set; }
+        public Vaccination(int dogID, DateTime date)
+        {
+            DogID = dogID;
+            Date = date;
+        }
+        public static bool operator <(Vaccination vaccination, DateTime date)
+        {
+            return vaccination.Date.CompareTo(date) < 0;
+        }
+        public static bool operator >(Vaccination vaccination, DateTime date)
+        {
+            return vaccination.Date.CompareTo(date) > 0;
+        }
+
+    }
+}

Lab3/Lab3.Exercises.Register/Vaccinations.csv

@@ -0,0 +1,6 @@
+123;2020-07-24
+124;2021-05-17
+421;2021-07-01
+125;2021-01-01
+320;2021-07-01
+320;2010-07-01

Lab3/Lab3.TouristInformationCenter/InOutUtils.cs

@@ -0,0 +1,213 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.IO;
+using System.IO.Compression;
+
+namespace Lab3.TouristInformationCenter
+{
+    /// <summary>
+    /// Class that stores functions that are related to reading and writing data
+    /// </summary>
+    class InOutUtils
+    {
+        /// <summary>
+        /// Append the museums from the second container to the first one
+        /// </summary>
+        /// <param name="container1">First container</param>
+        /// <param name="container2">Second container</param>
+        private static void AppendContainer(MuseumsContainer container1, MuseumsContainer container2)
+        {
+            for (int i = 0; i < container2.Count; i++)
+            {
+                container1.Add(container2.Get(i));
+            }
+        }
+
+        /// <summary>
+        /// Decode a list of museums from a given list of lines.
+        /// </summary>
+        /// <param name="lines"></param>
+        /// <returns>Container of museums</returns>
+        public static MuseumsContainer DecodeMuseums(List<string> lines)
+        {
+            MuseumsContainer container = new MuseumsContainer(lines.Count-2);
+            string city = lines[0];
+            string manager = lines[1];
+            for (int i = 2; i < lines.Count; i++)
+            {
+                string line = lines[i];
+                string[] values = line.Split(';');
+                string name = values[0];
+                string type = values[1];
+                List<Weekday> workdays = new List<Weekday>();
+                for (int j = 1; j <= 7; j++)
+                {
+                    if (int.Parse(values[j + 1]) == 1)
+                    {
+                        workdays.Add((Weekday)j);
+                    }
+                }
+                double price = double.Parse(values[9]);
+                bool hasGuide = int.Parse(values[10]) == 1;
+
+                Museum museum = new Museum(name, city, manager, type, workdays, price, hasGuide);
+                container.Add(museum);
+            } 
+            return container;
+        }
+
+        /// <summary>
+        /// Read and decode a list of museums from a file.
+        /// </summary>
+        /// <param name="filename">Target file</param>
+        /// <returns>Container of museums</returns>
+        public static MuseumsContainer ReadMuseumsFromCSV(string filename)
+        {
+            List<string> lines = new List<string>();
+            foreach (string line in File.ReadAllLines(filename, Encoding.UTF8))
+            {
+                lines.Add(line);
+            }
+            return DecodeMuseums(lines);
+        }
+
+        /// <summary>
+        /// Read all the entries from a zip file and decode the museums inside the csv entries.
+        /// </summary>
+        /// <param name="filename">Target filename</param>
+        /// <returns>Register of museums</returns>
+        public static MuseumsContainer ReadMuseumsFromZIP(string filename)
+        {
+            MuseumsContainer mainContainer = new MuseumsContainer();
+
+            using (ZipArchive zipFile = ZipFile.Open(filename, ZipArchiveMode.Read))
+            {
+                foreach (ZipArchiveEntry entry in zipFile.Entries)
+                {
+                    if (!entry.Name.EndsWith(".csv")) continue;
+                    List<string> lines = new List<string>();
+                    using (StreamReader reader = new StreamReader(entry.Open(), Encoding.UTF8))
+                    {
+                        while (!reader.EndOfStream)
+                        {
+                            lines.Add(reader.ReadLine());
+                        }
+                    }
+
+                    MuseumsContainer contaienr = DecodeMuseums(lines);
+                    AppendContainer(mainContainer, contaienr);
+                }
+                    
+            }
+                
+            return mainContainer;
+        }
+
+        /// <summary>
+        /// Read and decode lists of museums from multiple files and put into a single register.
+        /// </summary>
+        /// <param name="filenames">Target files</param>
+        /// <returns>Register containing museums from all files</returns>
+        public static MuseumsContainer ReadMuseums(params string[] filenames)
+        {
+            MuseumsContainer mainContainer = new MuseumsContainer();
+            foreach (string filename in filenames)
+            {
+                if (filename.EndsWith(".csv"))
+                {
+                    AppendContainer(mainContainer, ReadMuseumsFromCSV(filename));
+                }
+                else if(filename.EndsWith(".zip"))
+                {
+                    AppendContainer(mainContainer, ReadMuseumsFromZIP(filename));
+                }
+            }
+            return mainContainer;
+        }
+
+        private static string CreateMuseumLine(Museum museum)
+        {
+            string workDays = "";
+            workDays += museum.Workdays.Contains(Weekday.Monday) ? "1" : "0";
+            workDays += museum.Workdays.Contains(Weekday.Tuesday) ? ";1" : ";0";
+            workDays += museum.Workdays.Contains(Weekday.Wednesday) ? ";1" : ";0";
+            workDays += museum.Workdays.Contains(Weekday.Thursday) ? ";1" : ";0";
+            workDays += museum.Workdays.Contains(Weekday.Friday) ? ";1" : ";0";
+            workDays += museum.Workdays.Contains(Weekday.Saturday) ? ";1" : ";0";
+            workDays += museum.Workdays.Contains(Weekday.Sunday) ? ";1" : ";0";
+
+            return String.Join(";", museum.City, museum.Name, workDays, museum.Price);
+        }
+        
+        /// <summary>
+        /// Write and encode a list of museums to a file. The file will be in a csv format using ";" as seperators.
+        /// </summary>
+        /// <param name="filename">Target file</param>
+        /// <param name="container">Container of museums</param>
+        public static void WriteMuseums(string filename, MuseumsContainer container)
+        {
+            string[] lines = new string[container.Count];
+            for (int i = 0; i < container.Count; i++)
+            {
+                Museum museum = container.Get(i);
+                lines[i] = CreateMuseumLine(museum);
+            }
+            File.WriteAllLines(filename, lines, Encoding.UTF8);
+        }
+
+        /// <summary>
+        /// Write and encode a list of museums to a file from a register.
+        /// </summary>
+        /// <param name="filename">Target location</param>
+        /// <param name="register">Register containing museums</param>
+        public static void WriteMuseums(string filename, MuseumsRegister register)
+        {
+            int n = register.Count();
+            string[] lines = new string[n];
+            for (int i = 0; i < n; i++)
+            {
+                Museum museum = register.GetByIndex(i);
+                lines[i] = CreateMuseumLine(museum);
+            }
+            File.WriteAllLines(filename, lines, Encoding.UTF8);
+        }
+
+        /// <summary>
+        /// Write out a container of museums in a table to the console.
+        /// </summary>
+        /// <param name="container">Container of museums</param>
+        public static void PrintMuseums(MuseumsContainer container)
+        {
+            if (container.Count == 0)
+            {
+                Console.WriteLine("Nėra");
+                return;
+            }
+
+            Console.WriteLine(new string('-', 123));
+            Console.WriteLine("| {0,-20} | {1,-10} | {2,-20} | {3,-10} | {4,18} | {5,13} | {6,-4} |", "Vardas", "Miestas", "Atsakingas", "Tipas", "Darbo dienų kiekis", "Kaina", "Turi gidą?");
+            Console.WriteLine(new string('-', 123));
+            for (int i = 0; i < container.Count; i++)
+            {
+                Museum m = container.Get(i);
+                Console.WriteLine("| {0,-20} | {1,-10} | {2,-20} | {3,-10} | {4,18} | {5,13:f2} | {6,-10} |", m.Name, m.City, m.Manager, m.Type, m.Workdays.Count, m.Price, m.HasGuide ? "Taip" : "Ne");
+            }
+            Console.WriteLine(new string('-', 123));
+        }
+
+        /// <summary>
+        /// Write out a list of museums in a table to the console from a register.
+        /// </summary>
+        /// <param name="register">Register containing museums</param>
+        public static void PrintMuseums(MuseumsRegister register)
+        {
+            MuseumsContainer museums = new MuseumsContainer();
+            for (int i = 0; i < register.Count(); i++)
+            {
+                museums.Add(register.GetByIndex(i));
+            }
+            PrintMuseums(museums);
+        }
+    }
+}

Lab3/Lab3.TouristInformationCenter/Lab3.TouristInformationCenter.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp2.1</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <None Update="MuseumsKaunas.csv">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="MuseumsVilnius.csv">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
+</Project>

Lab3/Lab3.TouristInformationCenter/Museum.cs

@@ -0,0 +1,28 @@
+using System.Collections.Generic;
+
+namespace Lab3.TouristInformationCenter
+{
+    /// <summary>
+    /// Class used for storing data related a single museum.
+    /// </summary>
+    class Museum
+    {
+        public string Name { get; set; }
+        public string City { get; set; }
+        public string Manager { get; set; }
+        public string Type { get; set; }
+        public List<Weekday> Workdays { get; set; }
+        public double Price { get; set; }
+        public bool HasGuide { get; set; }
+        public Museum(string name, string city, string manager, string type, List<Weekday> workdays, double price, bool hasGuide)
+        {
+            Name = name;
+            Manager = manager;
+            City = city;
+            Type = type;
+            Workdays = workdays;
+            Price = price;
+            HasGuide = hasGuide;
+        }
+    }
+}

Lab3/Lab3.TouristInformationCenter/MuseumsContainer.cs

@@ -0,0 +1,246 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Lab3.TouristInformationCenter
+{
+    class MuseumsContainer
+    {
+        private Museum[] museums;
+        private int Capacity;
+        public int Count { get; private set; }
+        public MuseumsContainer(int capacity = 16)
+        {
+            Capacity = capacity;
+            museums = new Museum[capacity];
+        }
+
+        public MuseumsContainer(MuseumsContainer container) : this(container.Capacity)
+        {
+            for (int i = 0; i < container.Count; i++)
+            {
+                Add(container.Get(i));
+            }
+        }
+
+        /// <summary>
+        /// Add a museum to the end of the container
+        /// </summary>
+        /// <param name="museum">Target museum</param>
+        public void Add(Museum museum)
+        {
+            if (Count == Capacity)
+            {
+                EnsureCapacity(Capacity * 2);
+            }
+
+            museums[Count] = museum;
+            Count++;
+        }
+
+        /// <summary>
+        /// Get a musem by index from container
+        /// </summary>
+        /// <param name="index">Target index</param>
+        /// <returns>Museum at given index</returns>
+        public Museum Get(int index)
+        {
+            return museums[index];
+        }
+
+        /// <summary>
+        /// Check if given museum exists in container
+        /// </summary>
+        /// <param name="museum">Target museum</param>
+        /// <returns>True if contains</returns>
+        public bool Contains(Museum museum)
+        {
+            for (int i = 0; i < Count; i++)
+            {
+                if (museums[i].Equals(museum))
+                {
+                    return true;
+                }
+            }
+            return false;
+        }
+
+        /// <summary>
+        /// Put a museum at a specific index
+        /// </summary>
+        /// <param name="index">Target index</param>
+        /// <param name="museum">Target museum</param>
+        public void Put(int index, Museum museum)
+        {
+            museums[index] = museum;
+        }
+
+        /// <summary>
+        /// Filter by property "HasGuide"
+        /// </summary>
+        /// <param name="hasGuide">Target value</param>
+        /// <returns>A filtered container of museums</returns>
+        public MuseumsContainer FilterByGuide(bool hasGuide)
+        {
+            MuseumsContainer filtered = new MuseumsContainer();
+            for (int i = 0; i < Count; i++)
+            {
+                Museum museum = museums[i];
+                if (museum.HasGuide == hasGuide)
+                {
+                    filtered.Add(museum);
+                }
+            }
+            return filtered;
+        }
+
+        /// <summary>
+        /// Filter by property "Type".
+        /// </summary>
+        /// <param name="type">Target type</param>
+        /// <returns>A filtered container of museums</returns>
+        public MuseumsContainer FilterByType(string type)
+        {
+            MuseumsContainer filtered = new MuseumsContainer();
+            for (int i = 0; i < Count; i++)
+            {
+                Museum museum = museums[i];
+                if (museum.Type == type)
+                {
+                    filtered.Add(museum);
+                }
+            }
+            return filtered;
+        }
+
+        /// <summary>
+        /// Filter by property "Price".
+        /// </summary>
+        /// <param name="maxPrice">Maximum allowed price to be included</param>
+        /// <returns>A container with museums that dont't have a larger price then "maxPrice"</returns>
+        public MuseumsContainer FilterByPrice(double maxPrice)
+        {
+            MuseumsContainer filtered = new MuseumsContainer();
+            for (int i = 0; i < Count; i++)
+            {
+                Museum museum = museums[i];
+                if (museum.Price <= maxPrice)
+                {
+                    filtered.Add(museum);
+                }
+            }
+            return filtered;
+        }
+
+        /// <summary>
+        /// Filter by property "Type"
+        /// </summary>
+        /// <param name="city">Target city</param>
+        /// <returns>A container of museums</returns>
+        public MuseumsContainer FilterByCity(string city)
+        {
+            MuseumsContainer filtered = new MuseumsContainer();
+            for (int i = 0; i < Count; i++)
+            {
+                Museum museum = museums[i];
+                if (museum.City == city)
+                {
+                    filtered.Add(museum);
+                }
+            }
+            return filtered;
+        }
+
+        /// <summary>
+        /// Return a list of "active" museums from the contaner.
+        /// A museum is considered active if it is working at least some amount a week.
+        /// </summary>
+        /// <param name="threshold">Threshold which determines what is active</param>
+        /// <returns>A container of "active" museums</returns>
+        public MuseumsContainer FilterByActivity(int threshold)
+        {
+            MuseumsContainer filtered = new MuseumsContainer();
+            for (int i = 0; i < Count; i++)
+            {
+                Museum museum = museums[i];
+                if (museum.Workdays.Count >= threshold)
+                {
+                    filtered.Add(museum);
+                }
+            }
+            return filtered;
+        }
+
+        /// <summary>
+        /// Filter by property "Name"
+        /// </summary>
+        /// <param name="name">Target name</param>
+        /// <returns>A filtered container</returns>
+        public MuseumsContainer FilterByName(string name)
+        {
+            MuseumsContainer filtered = new MuseumsContainer();
+            for (int i = 0; i < Count; i++)
+            {
+                Museum museum = museums[i];
+                if (museum.Name == name)
+                {
+                    filtered.Add(museum);
+                }
+            }
+            return filtered;
+        }
+
+        /// <summary>
+        /// Get all of the different types of cities.
+        /// </summary>
+        /// <returns>A list of city names</returns>
+        public List<string> GetAllCities()
+        {
+            List<string> cities = new List<string>();
+            for (int i = 0; i < Count; i++)
+            {
+                Museum museum = museums[i];
+                if (!cities.Contains(museum.City))
+                {
+                    cities.Add(museum.City);
+                }
+            }
+            return cities;
+        }
+
+        /// <summary>
+        /// Sort container by "City" and "Name" in alphabetical order.
+        /// </summary>
+        public void Sort()
+        {
+            for (int i = 0; i < Count - 1; i++)
+            {
+                for (int j = i + 1; j < Count; j++)
+                {
+                    Museum a = museums[i];
+                    Museum b = museums[j];
+                    int nameCompare = a.Name.CompareTo(b.Name);
+                    int cityCompare = a.City.CompareTo(b.City);
+                    if (cityCompare > 0 || (cityCompare == 0 && nameCompare > 0))
+                    {
+                        museums[i] = b;
+                        museums[j] = a;
+                    }
+                }
+            }
+        }
+
+        private void EnsureCapacity(int minimumCapacity)
+        {
+            if (minimumCapacity <= Capacity) return;
+
+            Museum[] museumsClone = new Museum[minimumCapacity];
+            for (int i = 0; i < Count; i++)
+            {
+                museumsClone[i] = museums[i];
+            }
+            Capacity = minimumCapacity;
+            museums = museumsClone;
+        }
+    }
+}

Lab3/Lab3.TouristInformationCenter/MuseumsKaunas.csv

@@ -0,0 +1,8 @@
+Kaunas
+Jonas Jonaitis
+KaunoMuziejus1;Dailė;1;0;0;0;1;0;1;3,40;0
+KaunoMuziejusB;Computer;1;1;0;1;1;1;1;14,39;1
+KaunoMuziejus3;History;0;1;0;0;1;0;0;3,26;0
+KaunoMuziejus4;Dailė;0;1;0;1;1;0;1;9,47;1
+KaunoMuziejus5;Space;1;1;0;0;0;0;1;1,99;1
+KaunoMuziejusB;Space;1;1;1;1;0;1;1;0,99;1

Lab3/Lab3.TouristInformationCenter/MuseumsRegister.cs

@@ -0,0 +1,170 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Lab3.TouristInformationCenter
+{
+    /// <summary>
+    /// Class used to store multiple museums in one place
+    /// </summary>
+    class MuseumsRegister
+    {
+        private MuseumsContainer AllMuseums;
+
+        public MuseumsRegister()
+        {
+            AllMuseums = new MuseumsContainer();
+        }
+
+        public MuseumsRegister(MuseumsContainer museums)
+        {
+            AllMuseums = new MuseumsContainer(museums);
+        }
+
+        /// <summary>
+        /// Add one museum to the register.
+        /// </summary>
+        /// <param name="museum">Target museum</param>
+        public void Add(Museum museum)
+        {
+            AllMuseums.Add(museum);
+        }
+
+        /// <summary>
+        /// The amount of stored museums in the register.
+        /// </summary>
+        /// <returns>Museum count</returns>
+        public int Count()
+        {
+            return AllMuseums.Count;
+        }
+
+        /// <summary>
+        /// Access museum from register by index
+        /// </summary>
+        /// <param name="index">Target index</param>
+        /// <returns>Museum</returns>
+        public Museum GetByIndex(int index)
+        {
+            return AllMuseums.Get(index);
+        }
+
+        /// <summary>
+        /// Return a list of active museums from the register.
+        /// A museum is considered active if it is working at least some amount a week.
+        /// </summary>
+        /// <param name="threshold">Threshold which determines what is active</param>
+        /// <returns>A list of active museums</returns>
+        public MuseumsContainer FilterByActiveMuseums(int threshold)
+        {
+            return AllMuseums.FilterByActivity(threshold);
+        }
+
+        /// <summary>
+        /// Find museum that work the most days in a week
+        /// </summary>
+        /// <returns>Most active museum</returns>
+        public Museum FindMostActiveMuseum()
+        {
+            if (AllMuseums.Count == 0)
+            {
+                return null;
+            }
+
+            Museum mostActive = AllMuseums.Get(0);
+            for (int i = 0; i < AllMuseums.Count; i++)
+            {
+                Museum museum = AllMuseums.Get(i);
+                if (museum.Workdays.Count > mostActive.Workdays.Count)
+                {
+                    mostActive = museum;
+                }
+            }
+            return mostActive;
+        }
+
+        /// <summary>
+        /// Find all museums that work the most days in a week
+        /// </summary>
+        /// <returns></returns>
+        public MuseumsContainer FindMostActiveMuseums()
+        {
+            Museum mostActive = FindMostActiveMuseum();
+            MuseumsContainer activeMuseums = new MuseumsContainer();
+            for (int i = 0; i < AllMuseums.Count; i++)
+            {
+                Museum museum = AllMuseums.Get(i);
+                if (museum.Workdays.Count == mostActive.Workdays.Count)
+                {
+                    activeMuseums.Add(museum);
+                }
+            }
+            return activeMuseums;
+        }
+        
+        /// <summary>
+        /// Get all of the different types of cities.
+        /// </summary>
+        /// <returns>A list of city names</returns>
+        public List<string> GetAllCities()
+        {
+            return AllMuseums.GetAllCities();
+        }
+
+        /// <summary>
+        /// Filter the museums by city name from register
+        /// </summary>
+        /// <param name="city">Target city</param>
+        /// <returns>A container of museums</returns>
+        public MuseumsContainer FilterByCity(string city)
+        {
+            return AllMuseums.FilterByCity(city);
+        }
+
+        /// <summary>
+        /// Filter by property "Type".
+        /// </summary>
+        /// <param name="type">Target type</param>
+        /// <returns>A filtered container of museums</returns>
+        public MuseumsContainer FilterByType(string type)
+        {
+            return AllMuseums.FilterByType(type);
+        }
+
+        private List<string> GetMuseumNames()
+        {
+            List<string> result = new List<string>();
+            for (int i = 0; i < AllMuseums.Count; i++)
+            {
+                Museum museum = AllMuseums.Get(i);
+                if (!result.Contains(museum.Name))
+                {
+                    result.Add(museum.Name);
+                }
+            }
+            return result;
+        }
+
+        /// <summary>
+        /// Find all museums that have matching names
+        /// </summary>
+        /// <returns>A container with museums that have matching names</returns>
+        public MuseumsContainer FindMuseumsWithDuplicateNames()
+        {
+            MuseumsContainer result = new MuseumsContainer();
+            List<string> names = GetMuseumNames();
+            foreach (string name in names)
+            {
+                MuseumsContainer museumsByName = AllMuseums.FilterByName(name);
+                if (museumsByName.Count <= 1) continue;
+                
+                for (int i = 0; i < museumsByName.Count; i++)
+                {
+                    result.Add(museumsByName.Get(i));
+                }
+            }
+            return result;
+        }
+
+    }
+}

Lab3/Lab3.TouristInformationCenter/MuseumsVilnius.csv

@@ -0,0 +1,7 @@
+Vilnius
+Petras Petraitis
+VilnausMuziejus1;Dailė;1;0;0;1;1;0;0;5,49;0
+VilnausMuziejus2;Computer;1;1;0;1;1;1;1;0,00;1
+VilnausMuziejusA;Dailė;0;1;1;1;1;0;0;1,23;0
+VilnausMuziejusA;Food;1;1;1;1;1;1;0;6,90;0
+VilnausMuziejus5;History;0;1;0;1;1;0;1;10,49;0

Lab3/Lab3.TouristInformationCenter/Program.cs

@@ -0,0 +1,46 @@
+using System;
+using System.Collections.Generic;
+
+namespace Lab3.TouristInformationCenter
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            // Read all museums from initial data files
+            MuseumsContainer container = InOutUtils.ReadMuseums("MuseumsKaunas.csv", "MuseumsVilnius.csv");
+            MuseumsRegister register = new MuseumsRegister(container);
+            Console.WriteLine("Visi muziejai:");
+            InOutUtils.PrintMuseums(register);
+            Console.WriteLine();
+
+            // Write out a list of cities and if they have at least one museum that is free and with a guide
+            List<string> cities = register.GetAllCities();
+            foreach (string city in cities)
+            {
+                MuseumsContainer freeMuseumsWithGuide = register
+                    .FilterByCity(city)
+                    .FilterByPrice(0)
+                    .FilterByGuide(true);
+                bool passesCriteria = freeMuseumsWithGuide.Count > 0;
+                Console.WriteLine("{0}: {1}", city, passesCriteria ? "Taip" : "Ne");
+            }
+            Console.WriteLine();
+
+            // Find all museums that are the most active
+            MuseumsContainer mostActiveMuseums = register.FindMostActiveMuseums();
+            Console.WriteLine("Aktyviausi muziejai:");
+            InOutUtils.PrintMuseums(mostActiveMuseums);
+            Console.WriteLine();
+
+            // Find museums that have duplicate names
+            MuseumsContainer museumsWithDuplicateNames = register.FindMuseumsWithDuplicateNames();
+            InOutUtils.WriteMuseums("Sutampta.csv", museumsWithDuplicateNames);
+
+            // Find all art museums and sort them
+            MuseumsContainer artMuseums = register.FilterByType("Dailė");
+            artMuseums.Sort();
+            InOutUtils.WriteMuseums("Dailė.csv", artMuseums);
+        }
+    }
+}

Lab3/Lab3.TouristInformationCenter/Weekday.cs

@@ -0,0 +1,17 @@
+
+namespace Lab3.TouristInformationCenter
+{
+    /// <summary>
+    /// Used for storing weekdays as numbers rather than strings
+    /// </summary>
+    enum Weekday
+    {
+        Monday = 1,
+        Tuesday = 2,
+        Wednesday = 3,
+        Thursday = 4,
+        Friday = 5,
+        Saturday = 6,
+        Sunday = 7
+    }
+}

Lab3/Lab3.TouristInformationCenter/tests/1/MuseumsKaunas.csv

@@ -0,0 +1,8 @@
+Kaunas
+Jonas Jonaitis
+KaunoMuziejus1;Dailė;1;0;0;0;1;0;1;3,40;0
+KaunoMuziejusB;Computer;1;1;0;1;1;1;1;14,39;1
+KaunoMuziejus3;History;0;1;0;0;1;0;0;3,26;0
+KaunoMuziejus4;Dailė;0;1;0;1;1;0;1;9,47;1
+KaunoMuziejus5;Space;1;1;0;0;0;0;1;1,99;1
+KaunoMuziejusB;Space;1;1;1;1;0;1;1;0,99;1

Lab3/Lab3.TouristInformationCenter/tests/1/MuseumsVilnius.csv

@@ -0,0 +1,7 @@
+Vilnius
+Petras Petraitis
+VilnausMuziejus1;Dailė;1;0;0;1;1;0;0;5,49;0
+VilnausMuziejus2;Computer;1;1;0;1;1;1;1;0,00;1
+VilnausMuziejusA;Dailė;0;1;1;1;1;0;0;1,23;0
+VilnausMuziejusA;Food;1;1;1;1;1;1;0;6,90;0
+VilnausMuziejus5;History;0;1;0;1;1;0;1;10,49;0

Lab3/Lab3.TouristInformationCenter/tests/2/MuseumsKaunas.csv

@@ -0,0 +1,5 @@
+Kaunas
+Jonas Joniausias
+KaunoMuziejusB;Computer;1;1;0;1;1;1;1;14,39;1
+KaunoMuziejus3;History;0;1;0;0;1;0;0;3,26;0
+KaunoMuziejusB;Space;1;1;1;1;0;1;1;0,99;0

Lab3/Lab3.TouristInformationCenter/tests/2/MuseumsVilnius.csv

@@ -0,0 +1,5 @@
+Vilnius
+Petras Petrausias
+VilnausMuziejus2;Computer;1;1;0;1;1;1;1;0,00;0
+VilnausMuziejusA;Dailė;0;1;1;1;1;0;0;1,23;0
+VilnausMuziejusB;Food;1;1;1;1;1;1;0;6,90;0

Lab3/Lab3.TouristInformationCenterExtra/InOutUtils.cs

@@ -0,0 +1,224 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.IO;
+using System.IO.Compression;
+
+namespace Lab3.TouristInformationCenterExtra
+{
+    /// <summary>
+    /// Class that stores functions that are related to reading and writing data
+    /// </summary>
+    class InOutUtils
+    {
+        /// <summary>
+        /// Append the museums from the second container to the first one
+        /// </summary>
+        /// <param name="container1">First container</param>
+        /// <param name="container2">Second container</param>
+        private static void AppendContainer(MuseumsContainer container1, MuseumsContainer container2)
+        {
+            for (int i = 0; i < container2.Count; i++)
+            {
+                container1.Add(container2.Get(i));
+            }
+        }
+
+        /// <summary>
+        /// Decode a single museum from a string
+        /// </summary>
+        /// <param name="city">Target city</param>
+        /// <param name="manager">Target manager</param>
+        /// <param name="encoded">Encoded string</param>
+        /// <returns>A decode museum</returns>
+        public static Museum DecodeMusem(string city, string manager, string encoded)
+        {
+            string[] values = encoded.Split(';');
+            string name = values[0];
+            string type = values[1];
+            List<Weekday> workdays = new List<Weekday>();
+            for (int i = 1; i <= 7; i++)
+            {
+                if (int.Parse(values[i + 1]) == 1)
+                {
+                    workdays.Add((Weekday)i);
+                }
+            }
+            double price = double.Parse(values[9]);
+            bool hasGuide = int.Parse(values[10]) == 1;
+
+            return new Museum(name, city, manager, type, workdays, price, hasGuide);
+        }
+
+        /// <summary>
+        /// Decode a list of museums from a given list of lines.
+        /// </summary>
+        /// <param name="lines"></param>
+        /// <returns>Container of museums</returns>
+        public static MuseumsContainer DecodeMuseums(List<string> lines)
+        {
+            MuseumsContainer container = new MuseumsContainer(lines.Count-2);
+            string city = lines[0];
+            string manager = lines[1];
+            for (int i = 2; i < lines.Count; i++)
+            {
+                Museum museum = DecodeMusem(city, manager, lines[i]);
+                container.Add(museum);
+            } 
+            return container;
+        }
+
+        /// <summary>
+        /// Read and decode a list of museums from a file.
+        /// </summary>
+        /// <param name="filename">Target file</param>
+        /// <returns>Container of museums</returns>
+        public static MuseumsContainer ReadMuseumsFromCSV(string filename)
+        {
+            List<string> lines = new List<string>();
+            foreach (string line in File.ReadAllLines(filename, Encoding.UTF8))
+            {
+                lines.Add(line);
+            }
+            return DecodeMuseums(lines);
+        }
+
+        /// <summary>
+        /// Read all the entries from a zip file and decode the museums inside the csv entries.
+        /// </summary>
+        /// <param name="filename">Target filename</param>
+        /// <returns>Register of museums</returns>
+        public static MuseumsContainer ReadMuseumsFromZIP(string filename)
+        {
+            MuseumsContainer mainContainer = new MuseumsContainer();
+
+            using (ZipArchive zipFile = ZipFile.Open(filename, ZipArchiveMode.Read))
+            {
+                foreach (ZipArchiveEntry entry in zipFile.Entries)
+                {
+                    if (!entry.Name.EndsWith(".csv")) continue;
+                    List<string> lines = new List<string>();
+                    using (StreamReader reader = new StreamReader(entry.Open(), Encoding.UTF8))
+                    {
+                        while (!reader.EndOfStream)
+                        {
+                            lines.Add(reader.ReadLine());
+                        }
+                    }
+
+                    MuseumsContainer contaienr = DecodeMuseums(lines);
+                    AppendContainer(mainContainer, contaienr);
+                }
+                    
+            }
+                
+            return mainContainer;
+        }
+
+        /// <summary>
+        /// Read and decode lists of museums from multiple files and put into a single register.
+        /// </summary>
+        /// <param name="filenames">Target files</param>
+        /// <returns>Register containing museums from all files</returns>
+        public static MuseumsContainer ReadMuseums(params string[] filenames)
+        {
+            MuseumsContainer mainContainer = new MuseumsContainer();
+            foreach (string filename in filenames)
+            {
+                if (filename.EndsWith(".csv"))
+                {
+                    AppendContainer(mainContainer, ReadMuseumsFromCSV(filename));
+                }
+                else if(filename.EndsWith(".zip"))
+                {
+                    AppendContainer(mainContainer, ReadMuseumsFromZIP(filename));
+                }
+            }
+            return mainContainer;
+        }
+
+        private static string CreateMuseumLine(Museum museum)
+        {
+            string workDays = "";
+            workDays += museum.Workdays.Contains(Weekday.Monday) ? "1" : "0";
+            workDays += museum.Workdays.Contains(Weekday.Tuesday) ? ";1" : ";0";
+            workDays += museum.Workdays.Contains(Weekday.Wednesday) ? ";1" : ";0";
+            workDays += museum.Workdays.Contains(Weekday.Thursday) ? ";1" : ";0";
+            workDays += museum.Workdays.Contains(Weekday.Friday) ? ";1" : ";0";
+            workDays += museum.Workdays.Contains(Weekday.Saturday) ? ";1" : ";0";
+            workDays += museum.Workdays.Contains(Weekday.Sunday) ? ";1" : ";0";
+
+            return String.Join(";", museum.City, museum.Name, workDays, museum.Price);
+        }
+        
+        /// <summary>
+        /// Write and encode a list of museums to a file. The file will be in a csv format using ";" as seperators.
+        /// </summary>
+        /// <param name="filename">Target file</param>
+        /// <param name="container">Container of museums</param>
+        public static void WriteMuseums(string filename, MuseumsContainer container)
+        {
+            string[] lines = new string[container.Count];
+            for (int i = 0; i < container.Count; i++)
+            {
+                Museum museum = container.Get(i);
+                lines[i] = CreateMuseumLine(museum);
+            }
+            File.WriteAllLines(filename, lines, Encoding.UTF8);
+        }
+
+        /// <summary>
+        /// Write and encode a list of museums to a file from a register.
+        /// </summary>
+        /// <param name="filename">Target location</param>
+        /// <param name="register">Register containing museums</param>
+        public static void WriteMuseums(string filename, MuseumsRegister register)
+        {
+            int n = register.Count();
+            string[] lines = new string[n];
+            for (int i = 0; i < n; i++)
+            {
+                Museum museum = register.GetByIndex(i);
+                lines[i] = CreateMuseumLine(museum);
+            }
+            File.WriteAllLines(filename, lines, Encoding.UTF8);
+        }
+
+        /// <summary>
+        /// Write out a container of museums in a table to the console.
+        /// </summary>
+        /// <param name="container">Container of museums</param>
+        public static void PrintMuseums(MuseumsContainer container)
+        {
+            if (container.Count == 0)
+            {
+                Console.WriteLine("Nėra");
+                return;
+            }
+
+            Console.WriteLine(new string('-', 115));
+            Console.WriteLine("| {0,20} | {1,-10} | {2,20} | {3,-10} | {4,-18} | {5,-3} | {6,-4} |", "Vardas", "Miestas", "Atsakingas", "Tipas", "Darbo dienų kiekis", "Kaina", "Turi gidą?");
+            Console.WriteLine(new string('-', 115));
+            for (int i = 0; i < container.Count; i++)
+            {
+                Museum m = container.Get(i);
+                Console.WriteLine("| {0,20} | {1,-10} | {2, 20} | {3,-10} | {4,-18} | {5,-5:f2} | {6,-10} |", m.Name, m.City, m.Manager, m.Type, m.Workdays.Count, m.Price, m.HasGuide ? "Taip" : "Ne");
+            }
+            Console.WriteLine(new string('-', 115));
+        }
+
+        /// <summary>
+        /// Write out a list of museums in a table to the console from a register.
+        /// </summary>
+        /// <param name="register">Register containing museums</param>
+        public static void PrintMuseums(MuseumsRegister register)
+        {
+            MuseumsContainer museums = new MuseumsContainer();
+            for (int i = 0; i < register.Count(); i++)
+            {
+                museums.Add(register.GetByIndex(i));
+            }
+            PrintMuseums(museums);
+        }
+    }
+}

Lab3/Lab3.TouristInformationCenterExtra/Lab3.TouristInformationCenterExtra.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp2.1</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <None Update="MuseumsKaunas.csv">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="MuseumsVilnius.csv">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
+</Project>

Lab3/Lab3.TouristInformationCenterExtra/Museum.cs

@@ -0,0 +1,28 @@
+using System.Collections.Generic;
+
+namespace Lab3.TouristInformationCenterExtra
+{
+    /// <summary>
+    /// Class used for storing data related a single museum.
+    /// </summary>
+    class Museum
+    {
+        public string Name { get; set; }
+        public string City { get; set; }
+        public string Manager { get; set; }
+        public string Type { get; set; }
+        public List<Weekday> Workdays { get; set; }
+        public double Price { get; set; }
+        public bool HasGuide { get; set; }
+        public Museum(string name, string city, string manager, string type, List<Weekday> workdays, double price, bool hasGuide)
+        {
+            Name = name;
+            Manager = manager;
+            City = city;
+            Type = type;
+            Workdays = workdays;
+            Price = price;
+            HasGuide = hasGuide;
+        }
+    }
+}

Lab3/Lab3.TouristInformationCenterExtra/MuseumsContainer.cs

@@ -0,0 +1,283 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.IO;
+using System.IO.MemoryMappedFiles;
+
+namespace Lab3.TouristInformationCenterExtra
+{
+    class MuseumsContainer
+    {
+        
+        public int Count { get; private set; }
+        private static Random random = new Random();
+        private string Filename;
+        private FileStream fs;
+
+        public MuseumsContainer()
+        {
+            Filename = ".container"+random.Next(1000).ToString();
+            fs = File.Create(Filename);
+        }
+
+        public MuseumsContainer(MuseumsContainer container) : this()
+        {
+            for (int i = 0; i < container.Count; i++)
+            {
+                Add(container.Get(i));
+            }
+        }
+
+        ~MuseumsContainer()
+        {
+            fs.Close();
+            //File.Delete(Filename);
+        }
+
+        private void SeekToEnd()
+        {
+            fs.Seek(0, SeekOrigin.End);
+        }
+
+        private static Museum DecodeMuseum(string encoded)
+        {
+            string[] values = encoded.Split(';');
+            string name = values[0];
+            string city = values[1];
+            string manager = values[2];
+            string type = values[3];
+            List<Weekday> workdays = new List<Weekday>();
+            for (int i = 1; i <= 7; i++)
+            {
+                if (int.Parse(values[i+3]) == 1)
+                {
+                    workdays.Add((Weekday)i);
+                }
+            }
+            double price = double.Parse(values[11]);
+            bool hasGuide = int.Parse(values[12]) == 1;
+
+            return new Museum(name, city, manager, type, workdays, price, hasGuide);
+        }
+
+        private static string EncodeMuseum(Museum museum)
+        {
+            int[] workDays = new int[museum.Workdays.Count];
+            for (int i = 0; i < museum.Workdays.Count; i++)
+            {
+                Weekday day = museum.Workdays[i];
+                workDays[i] = Convert.ToInt32(day);
+            }
+
+            int hasGuide = Convert.ToInt32(museum.HasGuide);
+            string workDaysJoined = String.Join(";", workDays);
+
+            return String.Join(";", museum.Name, museum.City, museum.Manager, museum.Type, workDaysJoined, museum.Price, hasGuide);
+        }
+
+        /// <summary>
+        /// Add a museum to the end of the container
+        /// </summary>
+        /// <param name="museum">Target museum</param>
+        public void Add(Museum museum)
+        {
+            SeekToEnd();
+            string encoded = EncodeMuseum(museum);
+            byte[] bytes = new UTF8Encoding(true).GetBytes(encoded);
+            fs.Write(bytes);
+            Count++;
+        }
+
+        /// <summary>
+        /// Get a musem by index from container
+        /// </summary>
+        /// <param name="index">Target index</param>
+        /// <returns>Museum at given index</returns>
+        public Museum Get(int index)
+        {
+            return museums[index];
+        }
+
+        /// <summary>
+        /// Check if given museum exists in container
+        /// </summary>
+        /// <param name="museum">Target museum</param>
+        /// <returns>True if contains</returns>
+        public bool Contains(Museum museum)
+        {
+            for (int i = 0; i < Count; i++)
+            {
+                if (museums[i].Equals(museum))
+                {
+                    return true;
+                }
+            }
+            return false;
+        }
+
+        /// <summary>
+        /// Put a museum at a specific index
+        /// </summary>
+        /// <param name="index">Target index</param>
+        /// <param name="museum">Target museum</param>
+        public void Put(int index, Museum museum)
+        {
+            museums[index] = museum;
+        }
+
+        /// <summary>
+        /// Filter by property "HasGuide"
+        /// </summary>
+        /// <param name="hasGuide">Target value</param>
+        /// <returns>A filtered container of museums</returns>
+        public MuseumsContainer FilterByGuide(bool hasGuide)
+        {
+            MuseumsContainer filtered = new MuseumsContainer();
+            for (int i = 0; i < Count; i++)
+            {
+                Museum museum = museums[i];
+                if (museum.HasGuide == hasGuide)
+                {
+                    filtered.Add(museum);
+                }
+            }
+            return filtered;
+        }
+
+        /// <summary>
+        /// Filter by property "Type".
+        /// </summary>
+        /// <param name="type">Target type</param>
+        /// <returns>A filtered container of museums</returns>
+        public MuseumsContainer FilterByType(string type)
+        {
+            MuseumsContainer filtered = new MuseumsContainer();
+            for (int i = 0; i < Count; i++)
+            {
+                Museum museum = museums[i];
+                if (museum.Type == type)
+                {
+                    filtered.Add(museum);
+                }
+            }
+            return filtered;
+        }
+
+        /// <summary>
+        /// Filter by property "Price".
+        /// </summary>
+        /// <param name="maxPrice">Maximum allowed price to be included</param>
+        /// <returns>A container with museums that dont't have a larger price then "maxPrice"</returns>
+        public MuseumsContainer FilterByPrice(double maxPrice)
+        {
+            MuseumsContainer filtered = new MuseumsContainer();
+            for (int i = 0; i < Count; i++)
+            {
+                Museum museum = museums[i];
+                if (museum.Price <= maxPrice)
+                {
+                    filtered.Add(museum);
+                }
+            }
+            return filtered;
+        }
+
+        /// <summary>
+        /// Filter by property "Type"
+        /// </summary>
+        /// <param name="city">Target city</param>
+        /// <returns>A container of museums</returns>
+        public MuseumsContainer FilterByCity(string city)
+        {
+            MuseumsContainer filtered = new MuseumsContainer();
+            for (int i = 0; i < Count; i++)
+            {
+                Museum museum = museums[i];
+                if (museum.City == city)
+                {
+                    filtered.Add(museum);
+                }
+            }
+            return filtered;
+        }
+
+        /// <summary>
+        /// Return a list of "active" museums from the contaner.
+        /// A museum is considered active if it is working at least some amount a week.
+        /// </summary>
+        /// <param name="threshold">Threshold which determines what is active</param>
+        /// <returns>A container of "active" museums</returns>
+        public MuseumsContainer FilterByActivity(int threshold)
+        {
+            MuseumsContainer filtered = new MuseumsContainer();
+            for (int i = 0; i < Count; i++)
+            {
+                Museum museum = museums[i];
+                if (museum.Workdays.Count >= threshold)
+                {
+                    filtered.Add(museum);
+                }
+            }
+            return filtered;
+        }
+
+        /// <summary>
+        /// Filter by property "Name"
+        /// </summary>
+        /// <param name="name">Target name</param>
+        /// <returns>A filtered container</returns>
+        public MuseumsContainer FilterByName(string name)
+        {
+            MuseumsContainer filtered = new MuseumsContainer();
+            for (int i = 0; i < Count; i++)
+            {
+                Museum museum = museums[i];
+                if (museum.Name == name)
+                {
+                    filtered.Add(museum);
+                }
+            }
+            return filtered;
+        }
+
+        /// <summary>
+        /// Get all of the different types of cities.
+        /// </summary>
+        /// <returns>A list of city names</returns>
+        public List<string> GetAllCities()
+        {
+            List<string> cities = new List<string>();
+            for (int i = 0; i < Count; i++)
+            {
+                Museum museum = museums[i];
+                if (!cities.Contains(museum.City))
+                {
+                    cities.Add(museum.City);
+                }
+            }
+            return cities;
+        }
+
+        /// <summary>
+        /// Sort container by "City" and "Name" in alphabetical order.
+        /// </summary>
+        public void Sort()
+        {
+            for (int i = 0; i < Count - 1; i++)
+            {
+                for (int j = i + 1; j < Count; j++)
+                {
+                    Museum a = museums[i];
+                    Museum b = museums[j];
+                    int nameCompare = a.Name.CompareTo(b.Name);
+                    int cityCompare = a.City.CompareTo(b.City);
+                    if (cityCompare > 0 || (cityCompare == 0 && nameCompare > 0))
+                    {
+                        museums[i] = b;
+                        museums[j] = a;
+                    }
+                }
+            }
+        }
+    }
+}

Lab3/Lab3.TouristInformationCenterExtra/MuseumsKaunas.csv

@@ -0,0 +1,8 @@
+Kaunas
+Jonas Jonaitis
+KaunoMuziejus1;Dailė;1;0;0;0;1;0;1;3,40;0
+KaunoMuziejusB;Computer;1;1;0;1;1;1;1;14,39;1
+KaunoMuziejus3;History;0;1;0;0;1;0;0;3,26;0
+KaunoMuziejus4;Dailė;0;1;0;1;1;0;1;9,47;1
+KaunoMuziejus5;Space;1;1;0;0;0;0;1;1,99;1
+KaunoMuziejusB;Space;1;1;1;1;0;1;1;0,99;1

Lab3/Lab3.TouristInformationCenterExtra/MuseumsRegister.cs

@@ -0,0 +1,166 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Lab3.TouristInformationCenterExtra
+{
+    /// <summary>
+    /// Class used to store multiple museums in one place
+    /// </summary>
+    class MuseumsRegister
+    {
+        private MuseumsContainer AllMuseums;
+
+        public MuseumsRegister()
+        {
+            AllMuseums = new MuseumsContainer();
+        }
+
+        public MuseumsRegister(MuseumsContainer museums)
+        {
+            AllMuseums = new MuseumsContainer(museums);
+        }
+
+        /// <summary>
+        /// Add one museum to the register.
+        /// </summary>
+        /// <param name="museum">Target museum</param>
+        public void Add(Museum museum)
+        {
+            AllMuseums.Add(museum);
+        }
+
+        /// <summary>
+        /// The amount of stored museums in the register.
+        /// </summary>
+        /// <returns>Museum count</returns>
+        public int Count()
+        {
+            return AllMuseums.Count;
+        }
+
+        /// <summary>
+        /// Access museum from register by index
+        /// </summary>
+        /// <param name="index">Target index</param>
+        /// <returns>Museum</returns>
+        public Museum GetByIndex(int index)
+        {
+            return AllMuseums.Get(index);
+        }
+
+        /// <summary>
+        /// Return a list of active museums from the register.
+        /// A museum is considered active if it is working at least some amount a week.
+        /// </summary>
+        /// <param name="threshold">Threshold which determines what is active</param>
+        /// <returns>A list of active museums</returns>
+        public MuseumsContainer FilterByActiveMuseums(int threshold)
+        {
+            return AllMuseums.FilterByActivity(threshold);
+        }
+
+        /// <summary>
+        /// Find museum that work the most days in a week
+        /// </summary>
+        /// <returns>Most active museum</returns>
+        public Museum FindMostActiveMuseum()
+        {
+            if (AllMuseums.Count == 0)
+            {
+                return null;
+            }
+
+            Museum mostActive = AllMuseums.Get(0);
+            for (int i = 0; i < AllMuseums.Count; i++)
+            {
+                Museum museum = AllMuseums.Get(i);
+                if (museum.Workdays.Count > mostActive.Workdays.Count)
+                {
+                    mostActive = museum;
+                }
+            }
+            return mostActive;
+        }
+
+        /// <summary>
+        /// Find all museums that work the most days in a week
+        /// </summary>
+        /// <returns></returns>
+        public MuseumsContainer FindMostActiveMuseums()
+        {
+            Museum mostActive = FindMostActiveMuseum();
+            MuseumsContainer activeMuseums = new MuseumsContainer();
+            for (int i = 0; i < AllMuseums.Count; i++)
+            {
+                Museum museum = AllMuseums.Get(i);
+                if (museum.Workdays.Count == mostActive.Workdays.Count)
+                {
+                    activeMuseums.Add(museum);
+                }
+            }
+            return activeMuseums;
+        }
+        
+        /// <summary>
+        /// Get all of the different types of cities.
+        /// </summary>
+        /// <returns>A list of city names</returns>
+        public List<string> GetAllCities()
+        {
+            return AllMuseums.GetAllCities();
+        }
+
+        /// <summary>
+        /// Filter the museums by city name from register
+        /// </summary>
+        /// <param name="city">Target city</param>
+        /// <returns>A container of museums</returns>
+        public MuseumsContainer FilterByCity(string city)
+        {
+            return AllMuseums.FilterByCity(city);
+        }
+
+        /// <summary>
+        /// Filter by property "Type".
+        /// </summary>
+        /// <param name="type">Target type</param>
+        /// <returns>A filtered container of museums</returns>
+        public MuseumsContainer FilterByType(string type)
+        {
+            return AllMuseums.FilterByType(type);
+        }
+
+        private List<string> GetMuseumNames()
+        {
+            List<string> result = new List<string>();
+            for (int i = 0; i < AllMuseums.Count; i++)
+            {
+                Museum museum = AllMuseums.Get(i);
+                if (!result.Contains(museum.Name))
+                {
+                    result.Add(museum.Name);
+                }
+            }
+            return result;
+        }
+
+        public MuseumsContainer FindMuseumsWithDuplicateNames()
+        {
+            MuseumsContainer result = new MuseumsContainer();
+            List<string> names = GetMuseumNames();
+            foreach (string name in names)
+            {
+                MuseumsContainer museumsByName = AllMuseums.FilterByName(name);
+                if (museumsByName.Count <= 1) continue;
+                
+                for (int i = 0; i < museumsByName.Count; i++)
+                {
+                    result.Add(museumsByName.Get(i));
+                }
+            }
+            return result;
+        }
+
+    }
+}

Lab3/Lab3.TouristInformationCenterExtra/MuseumsVilnius.csv

@@ -0,0 +1,7 @@
+Vilnius
+Petras Petraitis
+VilnausMuziejus1;Dailė;1;0;0;1;1;0;0;5,49;0
+VilnausMuziejus2;Computer;1;1;0;1;1;1;1;0,00;1
+VilnausMuziejusA;Dailė;0;1;1;1;1;0;0;1,23;0
+VilnausMuziejusA;Food;1;1;1;1;1;1;0;6,90;0
+VilnausMuziejus5;History;0;1;0;1;1;0;1;10,49;0

Lab3/Lab3.TouristInformationCenterExtra/Program.cs

@@ -0,0 +1,54 @@
+using System;
+using System.Collections.Generic;
+
+namespace Lab3.TouristInformationCenterExtra
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            List<Weekday> workDays = new List<Weekday> { Weekday.Monday };
+            Museum museum = new Museum("Foo", "Bar", "Baz", "IDK", workDays, 4.20, true);
+
+            MuseumsContainer container = new MuseumsContainer();
+            container.Add(museum);
+
+            /*
+            // Read all museums from initial data files
+            MuseumsContainer container = InOutUtils.ReadMuseums("MuseumsKaunas.csv", "MuseumsVilnius.csv");
+            MuseumsRegister register = new MuseumsRegister(container);
+            Console.WriteLine("Visi muziejai:");
+            InOutUtils.PrintMuseums(register);
+            Console.WriteLine();
+
+            // Write out a list of cities and if they have at least one museum that is free and with a guide
+            List<string> cities = register.GetAllCities();
+            foreach (string city in cities)
+            {
+                MuseumsContainer freeMuseumsWithGuide = register
+                    .FilterByCity(city)
+                    .FilterByPrice(0)
+                    .FilterByGuide(true);
+                bool passesCriteria = freeMuseumsWithGuide.Count > 0;
+                Console.WriteLine("{0}: {1}", city, passesCriteria ? "Taip" : "Ne");
+            }
+            Console.WriteLine();
+
+            // Find all museums that are the most active
+            MuseumsContainer mostActiveMuseums = register.FindMostActiveMuseums();
+            Console.WriteLine("Aktyviausi muziejai:");
+            InOutUtils.PrintMuseums(mostActiveMuseums);
+            Console.WriteLine();
+
+            // Find museums that have duplicate names
+            MuseumsContainer museumsWithDuplicateNames = register.FindMuseumsWithDuplicateNames();
+            InOutUtils.WriteMuseums("Sutampta.csv", museumsWithDuplicateNames);
+
+            // Find all art museums and sort them
+            MuseumsContainer artMuseums = register.FilterByType("Dailė");
+            artMuseums.Sort();
+            InOutUtils.WriteMuseums("Dailė.csv", artMuseums);
+            */
+        }
+    }
+}

Lab3/Lab3.TouristInformationCenterExtra/Weekday.cs

@@ -0,0 +1,17 @@
+
+namespace Lab3.TouristInformationCenterExtra
+{
+    /// <summary>
+    /// Used for storing weekdays as numbers rather than strings
+    /// </summary>
+    enum Weekday
+    {
+        Monday = 1,
+        Tuesday = 2,
+        Wednesday = 3,
+        Thursday = 4,
+        Friday = 5,
+        Saturday = 6,
+        Sunday = 7
+    }
+}

Lab3/Lab3.sln

@@ -0,0 +1,43 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.28307.1525
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Lab3.Exercises.Register", "Lab3.Exercises.Register\Lab3.Exercises.Register.csproj", "{2379B111-C112-4C7F-B4D9-9149B809E980}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Savarankiskas4", "Savarankiskas4\Savarankiskas4.csproj", "{FA2F782C-658B-4ED2-A93F-B2B334FBCBB8}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Lab3.TouristInformationCenter", "Lab3.TouristInformationCenter\Lab3.TouristInformationCenter.csproj", "{C89E170A-8C75-483F-B992-78C8B6DB08DB}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Lab3.TouristInformationCenterExtra", "Lab3.TouristInformationCenterExtra\Lab3.TouristInformationCenterExtra.csproj", "{86E4FDD5-ADBC-434A-966F-2FD59428ECBF}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{2379B111-C112-4C7F-B4D9-9149B809E980}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{2379B111-C112-4C7F-B4D9-9149B809E980}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{2379B111-C112-4C7F-B4D9-9149B809E980}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{2379B111-C112-4C7F-B4D9-9149B809E980}.Release|Any CPU.Build.0 = Release|Any CPU
+		{FA2F782C-658B-4ED2-A93F-B2B334FBCBB8}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{FA2F782C-658B-4ED2-A93F-B2B334FBCBB8}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{FA2F782C-658B-4ED2-A93F-B2B334FBCBB8}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{FA2F782C-658B-4ED2-A93F-B2B334FBCBB8}.Release|Any CPU.Build.0 = Release|Any CPU
+		{C89E170A-8C75-483F-B992-78C8B6DB08DB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{C89E170A-8C75-483F-B992-78C8B6DB08DB}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{C89E170A-8C75-483F-B992-78C8B6DB08DB}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{C89E170A-8C75-483F-B992-78C8B6DB08DB}.Release|Any CPU.Build.0 = Release|Any CPU
+		{86E4FDD5-ADBC-434A-966F-2FD59428ECBF}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{86E4FDD5-ADBC-434A-966F-2FD59428ECBF}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{86E4FDD5-ADBC-434A-966F-2FD59428ECBF}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{86E4FDD5-ADBC-434A-966F-2FD59428ECBF}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {27634FF3-4EBA-49EC-9207-F08AD686478C}
+	EndGlobalSection
+EndGlobal

Lab3/README.md

@@ -0,0 +1,6 @@
+# Lab3 example project
+
+This project is from the "Object oriented programming" course in KTU.
+
+It is not polished in any way, so don't expect anything from this.
+

Lab3/Savarankiskas4/Chemijos.csv

@@ -0,0 +1,6 @@
+Chemijos fakultetas
+Watson;Brauner;CH-1/2;2;8;10
+Kelly;Brian;CH-1/2;3;9;7;6
+Garcia;Blair;CH-1/2;2;6;5
+Kennedy;Benjamin;CI-1/1;2;7;8
+Kouma;Peter;CI-1/1;3;5;5;6

Lab3/Savarankiskas4/Elektros.csv

@@ -0,0 +1,7 @@
+Elektros fakultetas
+Lee;Amy;EL-1/1;2;10;10
+Cole;Annie ;EL-1/1;3;10;10;10
+Lowe;Rose;EL-1/1;4;10;10;10;10
+Moore;Mary;EL-1/2;3;10;10;10
+White;Alicia;EL-1/2;2;10;10
+Bruce;Lucy;EL-1/2;3;10;10;10

Lab3/Savarankiskas4/InOutUtils.cs

@@ -0,0 +1,85 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+
+namespace Savarankiskas4
+{
+    static class InOutUtils
+    {
+        public static StudentsContainer ReadStudents(string filename)
+        {
+            StudentsContainer container = new StudentsContainer();
+            string[] lines = File.ReadAllLines(filename, Encoding.UTF8);
+            string faculty = lines[0].TrimEnd();
+            for (int i = 1; i < lines.Length; i++)
+            {
+                string[] values = lines[i].Split(';');
+                string surname = values[0];
+                string name = values[1];
+                string group = values[2];
+                int gradeCount = int.Parse(values[3]);
+                List<int> grades = new List<int>();
+                for (int j = 0; j < gradeCount; j++)
+                {
+                    int grade = int.Parse(values[4 + j]);
+                    grades.Add(grade);
+                }
+                Student student = new Student(surname, name, faculty, group, grades);
+                container.Add(student);
+            }
+            return container;
+        }
+
+        private static int FindTotalCount(StudentsContainer[] containers)
+        {
+            int count = 0;
+            foreach (StudentsContainer container in containers)
+            {
+                count += container.Count;
+            }
+            return count;
+        }
+
+        private static StudentsContainer MergeContainers(StudentsContainer[] containers)
+        {
+            int count = FindTotalCount(containers);
+            StudentsContainer merged = new StudentsContainer(Math.Max(count, 1));
+            foreach (StudentsContainer container in containers)
+            {
+                for (int i = 0; i < container.Count; i++)
+                {
+                    merged.Add(container.Get(i));
+                }
+            }
+            return merged;
+        }
+
+        public static StudentsContainer ReadStudents(params string[] filenames)
+        {
+            StudentsContainer[] containers = new StudentsContainer[filenames.Length];
+            for (int i = 0; i < filenames.Length; i++)
+            {
+                string filename = filenames[i];
+                containers[i] = ReadStudents(filename);
+            }
+
+            return MergeContainers(containers);
+        }
+
+        public static void PrintStudents(string label, StudentsContainer container)
+        {
+            Console.WriteLine(new string('-', 99));
+            Console.WriteLine("| {0,-95} |", label);
+            Console.WriteLine(new string('-', 99));
+            Console.WriteLine("| {0,-15} | {1,-15} | {2,-25} | {3,-12} | {4,16} |", "Pavardė", "Vardas", "Fakultetas", "Grupė", "Pažymių vidurkis");
+            Console.WriteLine(new string('-', 99));
+            for (int i = 0; i < container.Count; i++)
+            {
+                Student student = container.Get(i);
+                Console.WriteLine("| {0,-15} | {1,-15} | {2,-25} | {3,-12} | {4,16:f2} |", student.Surname, student.Name, student.Faculty, student.Group, student.GradesAverage);
+            }
+            Console.WriteLine(new string('-', 99));
+        }
+    }
+}

Lab3/Savarankiskas4/Informatikos.csv

@@ -0,0 +1,7 @@
+Informatikos fakultetas
+Puzonas;Rokas;IF-1/1;2;10;10
+Mercedes;Sarah;IF-1/1;3;7;8;9
+Mary;Elizabeth;IF-1/1;2;9;10
+Ben;Niamh;IF-1/2;3;9;8;7
+Reyes;Hannah;IF-1/2;4;10;9;10;10
+William;Beth;IF-1/2;2;10;10

Lab3/Savarankiskas4/Program.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+
+namespace Savarankiskas4
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            StudentsContainer container = InOutUtils.ReadStudents("Chemijos.csv", "Elektros.csv", "Informatikos.csv");
+            InOutUtils.PrintStudents("Studentai", container);
+            Console.WriteLine();
+
+            StudentsRegister register = new StudentsRegister(container);
+            List<Tuple<string, float>> averages = register.FindGradesAverages();
+            Console.WriteLine("Grupių pažymių vidurkiai:");
+            foreach (Tuple<string, float> tuple in averages)
+            {
+                Console.WriteLine("{0}: {1}", tuple.Item1, tuple.Item2);
+            }
+        }
+    }
+}
+

Lab3/Savarankiskas4/Savarankiskas4.csproj

@@ -0,0 +1,20 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp2.1</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <None Update="Elektros.csv">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="Chemijos.csv">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="Informatikos.csv">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
+</Project>

Lab3/Savarankiskas4/Student.cs

@@ -0,0 +1,52 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Savarankiskas4
+{
+    class Student
+    {
+        public string Surname { get; set; }
+        public string Name { get; set; }
+        public string Faculty { get; set; }
+        public string Group { get; set; }
+        public List<int> Grades { get; set; }
+        public float GradesAverage
+        {
+            get
+            {
+                float sum = 0;
+                foreach (int grade in Grades)
+                {
+                    sum += grade;
+                }
+                return sum/Grades.Count;
+            }
+        }
+
+        public Student(string surname, string name, string faculty, string group, List<int> grades)
+        {
+            Surname = surname;
+            Name = name;
+            Faculty = faculty;
+            Group = group;
+            Grades = grades;
+        }
+
+        public override bool Equals(object obj)
+        {
+            var student = obj as Student;
+            return student != null &&
+                   Surname == student.Surname &&
+                   Name == student.Name &&
+                   Faculty == student.Faculty &&
+                   Group == student.Group;
+        }
+
+        public override int GetHashCode()
+        {
+            return HashCode.Combine(Surname, Name, Faculty, Group);
+        }
+
+    }
+}

Lab3/Savarankiskas4/StudentsContainer.cs

@@ -0,0 +1,97 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Savarankiskas4
+{
+    class StudentsContainer
+    {
+        private int Capacity;
+        public int Count { get; private set; } = 0;
+        private Student[] students;
+        public StudentsContainer(int capacity = 16)
+        {
+            Capacity = capacity;
+            students = new Student[capacity];
+        }
+
+        public void Add(Student student)
+        {
+            if (Count == Capacity)
+            {
+                EnsureCapacity(Capacity * 2);
+            }
+
+            students[Count] = student;
+            Count++;
+        }
+
+        public void Put(int index, Student student)
+        {
+            students[index] = student;
+        }
+
+        public Student Get(int index)
+        {
+            return students[index];
+        }
+
+        public bool Contains(Student student)
+        {
+            for (int i = 0; i < Count; i++)
+            {
+                if (students[i].Equals(student))
+                {
+                    return true;
+                }
+            }
+            return false;
+        }
+
+        public void Insert(int index, Student student)
+        {
+            for (int i = Count + 1; i > index; i--)
+            {
+                students[i] = students[i - 1];
+            }
+            students[index] = student;
+            Count++;
+        }
+
+        public void RemoveAt(int index)
+        {
+            for (int i = index; i < Count; i++)
+            {
+                students[i] = students[i + 1];
+            }
+            Count--;
+        }
+
+        public void Remove(Student student)
+        {
+            for (int i = 0; i < Count; i++)
+            {
+                if (students[i].Equals(student))
+                {
+                    RemoveAt(i);
+                    return;
+                }
+            }
+        }
+
+        private void EnsureCapacity(int minimumCapacity)
+        {
+            if (minimumCapacity > Capacity)
+            {
+                Student[] dogsClone = new Student[minimumCapacity];
+                for (int i = 0; i < Count; i++)
+                {
+                    dogsClone[i] = students[i];
+                }
+                Capacity = minimumCapacity;
+                students = dogsClone;
+            }
+        }
+        
+    }
+}

Lab3/Savarankiskas4/StudentsRegister.cs

@@ -0,0 +1,93 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Savarankiskas4
+{
+    class StudentsRegister
+    {
+        private StudentsContainer students;
+        public StudentsRegister()
+        {
+            students = new StudentsContainer();
+        }
+        public StudentsRegister(StudentsContainer container)
+        {
+            students = new StudentsContainer();
+            for (int i = 0; i < container.Count; i++)
+            {
+                students.Add(container.Get(i));
+            }
+        }
+
+        public void Add(Student student)
+        {
+            students.Add(student);
+        }
+
+        public Student Get(int index)
+        {
+            return students.Get(index);
+        }
+
+        public int StudentsCount()
+        {
+            return students.Count;
+        }
+
+        public List<string> FindAllGroups()
+        {
+            List<string> groups = new List<string>();
+            for (int i = 0; i < students.Count; i++)
+            {
+                Student student = students.Get(i);
+                if (!groups.Contains(student.Group))
+                {
+                    groups.Add(student.Group);
+                }
+            }
+            return groups;
+        }
+
+        public float FindGradesAverageByGroup(string group)
+        {
+            float sum = 0;
+            int n = 0;
+            for (int i = 0; i < students.Count; i++)
+            {
+                Student student = students.Get(i);
+                if (student.Group == group)
+                {
+                    sum += student.GradesAverage;
+                    n++;
+                }
+            }
+            return sum / n;
+        }
+
+        public List<Tuple<string, float>> FindGradesAverages()
+        {
+            List<string> groups = FindAllGroups();
+            List<Tuple<string, float>> averages = new List<Tuple<string, float>>();
+            foreach (string group in groups)
+            {
+                float average = FindGradesAverageByGroup(group);
+                averages.Add(new Tuple<string, float>(group, average));
+            }
+
+            averages.Sort(delegate (Tuple<string, float> group1, Tuple<string, float> group2) {
+                int gradesComparison = -group1.Item2.CompareTo(group2.Item2);
+                if (gradesComparison == 0)
+                {
+                    return group1.Item1.CompareTo(group2.Item1);
+                } else
+                {
+                    return gradesComparison;
+                }
+            });
+
+            return averages;
+        }
+
+    }
+}

Lab3/global.json

@@ -0,0 +1,5 @@
+{
+	"sdk": {
+		"version": "3.0.103"
+	}
+}