feat: complete Lab1

2022-02-17 15:31:43 +02:00 · 2022-02-17 15:31:43 +02:00 · 0c76bf44c3
commit 0c76bf44c3
parent b1a0ac0cfb
18 changed files with 854 additions and 0 deletions
--- a/Recursion/LD_24/App_Data/Rezultatai.txt
+++ b/Recursion/LD_24/App_Data/Rezultatai.txt
@ -0,0 +1,12 @@
+D...P
+XX...
+D.S.P
+XX...
+D.S..
+
+1 1
+1 3
+1 5
+Susitikimo vieta 3 3
+Picerija 5 3
+Nueita 32
--- a/Recursion/LD_24/App_Data/U3.txt
+++ b/Recursion/LD_24/App_Data/U3.txt
@ -0,0 +1,6 @@
+5 5
+D...P
+XX...
+D.S.P
+XX...
+D.S..
--- a/Recursion/LD_24/Code/BestPizzeriaResult.cs
+++ b/Recursion/LD_24/Code/BestPizzeriaResult.cs
@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Web;
+
+namespace LD_24.Code
+{
+    public class BestPizzeriaResult
+    {
+        public Point Pizzeria { get; private set; }
+        public Point MeetingSpot { get; private set; }
+        public int Cost { get; private set; }
+
+        public BestPizzeriaResult(Point pizzeria, Point meetingSpot, int cost)
+        {
+            Pizzeria = pizzeria;
+            MeetingSpot = meetingSpot;
+            Cost = cost;
+        }
+    }
+}
--- a/Recursion/LD_24/Code/InOutUtils.cs
+++ b/Recursion/LD_24/Code/InOutUtils.cs
@ -0,0 +1,99 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Web;
+
+namespace LD_24.Code
+{
+    public class InOutUtils
+    {
+        public static Map ReadMap(string filename)
+        {
+            string[] lines = File.ReadAllLines(filename);
+            string[] height_width = lines[0].Split(' ');
+            int height = int.Parse(height_width[0]);
+            int width = int.Parse(height_width[1]);
+
+            Map map = new Map(width, height);
+            for (int i = 1; i < height+1; i++)
+            {
+                int x = 0;
+                foreach (char c in lines[i])
+                {
+                    MapTile tile;
+                    if (c == '.') {
+                        tile = MapTile.Empty;
+                    } else if (c == 'X')  {
+                        tile = MapTile.Wall;
+                    } else if (c == 'P') {
+                        tile = MapTile.Pizzeria;
+                    } else if (c == 'D') {
+                        tile = MapTile.Friend;
+                    } else if (c == 'S') {
+                        tile = MapTile.MeetingSpot;
+                    } else {
+                        throw new Exception($"Invalid tile '{c}'");
+                    }
+                    map.Set(x, i - 1, tile);
+                    x++;
+                }
+            }
+            return map;
+        }
+
+        public static void WriteMap(StreamWriter writer, Map map)
+        {
+            for (int y = 0; y < map.Height; y++)
+            {
+                for (int x = 0; x < map.Width; x++)
+                {
+                    switch (map.Get(x, y))
+                    {
+                        case MapTile.Empty:
+                            writer.Write('.');
+                            break;
+                        case MapTile.Pizzeria:
+                            writer.Write('P');
+                            break;
+                        case MapTile.Friend:
+                            writer.Write('D');
+                            break;
+                        case MapTile.MeetingSpot:
+                            writer.Write('S');
+                            break;
+                        case MapTile.Wall:
+                            writer.Write('X');
+                            break;
+                        default:
+                            writer.Write('?');
+                            break;
+                    }
+                }
+                writer.Write('\n');
+            }
+        }
+
+        public static void WriteBestPizzeriaResult(StreamWriter writer, BestPizzeriaResult result)
+        {
+            if (result == null)
+            {
+                writer.WriteLine("Neįmanoma");
+            }
+            else
+            {
+                writer.WriteLine("Susitikimo vieta {0} {1}", result.MeetingSpot.X + 1, result.MeetingSpot.Y + 1);
+                writer.WriteLine("Picerija {0} {1}", result.Pizzeria.X + 1, result.Pizzeria.Y + 1);
+                writer.WriteLine("Nueita {0}", result.Cost);
+            }
+        }
+
+        public static void WriteFriendPositions(StreamWriter writer, List<Point> friends)
+        {
+            foreach (var friend in friends)
+            {
+                writer.WriteLine("{0} {1}", friend.X + 1, friend.Y + 1);
+            }
+        }
+    }
+}
--- a/Recursion/LD_24/Code/Map.cs
+++ b/Recursion/LD_24/Code/Map.cs
@ -0,0 +1,52 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Web;
+
+namespace LD_24.Code
+{
+    public class Map
+    {
+        MapTile[,] data;
+        public int Width { get; set; }
+        public int Height { get; set; }
+
+        public Map(int width, int height)
+        {
+            data = new MapTile[width, height];
+            Width = width;
+            Height = height;
+        }
+
+        public void Set(int x, int y, MapTile tile)
+        {
+            data[x, y] = tile;
+        }
+
+        public MapTile Get(int x, int y)
+        {
+            return data[x, y];
+        }
+
+        public bool IsInBounds(int x, int y)
+        {
+            return x >= 0 && x < Width && y >= 0 && y < Height;
+        }
+
+        public List<Point> FindAll(MapTile tile)
+        {
+            List<Point> points = new List<Point>();
+            for (int i = 0; i < Width; i++)
+            {
+                for (int j = 0; j < Height; j++)
+                {
+                    if (data[i, j] == tile)
+                    {
+                        points.Add(new Point(i, j));
+                    }
+                }
+            }
+            return points;
+        }
+    }
+}
--- a/Recursion/LD_24/Code/MapTile.cs
+++ b/Recursion/LD_24/Code/MapTile.cs
@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Web;
+
+namespace LD_24.Code
+{
+    public enum MapTile
+    {
+        Empty,
+        Wall,
+        Friend,
+        Pizzeria,
+        MeetingSpot
+    }
+}
--- a/Recursion/LD_24/Code/Point.cs
+++ b/Recursion/LD_24/Code/Point.cs
@ -0,0 +1,35 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Web;
+
+namespace LD_24.Code
+{
+    public class Point
+    {
+        public int X { get; set; }
+        public int Y { get; set; }
+
+        public Point(int x, int y)
+        {
+            X = x;
+            Y = y;
+        }
+
+        public override bool Equals(object obj)
+        {
+            return obj is Point point &&
+                   X == point.X &&
+                   Y == point.Y;
+        }
+
+        public override int GetHashCode()
+        {
+            int hashCode = 1861411795;
+            hashCode = hashCode * -1521134295 + X.GetHashCode();
+            hashCode = hashCode * -1521134295 + Y.GetHashCode();
+            return hashCode;
+        }
+
+    }
+}
--- a/Recursion/LD_24/Code/TaskUtils.cs
+++ b/Recursion/LD_24/Code/TaskUtils.cs
@ -0,0 +1,115 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Web;
+
+namespace LD_24.Code
+{
+    
+    public class TaskUtils
+    {
+        public static BestPizzeriaResult FindBestPizzeria(Map map)
+        {
+            int lowestCost = int.MaxValue;
+            Point bestMeetingSpot = null;
+            Point bestPizzeria = null;
+
+            List<Point> friends = map.FindAll(MapTile.Friend);
+            List<Point> pizzerias = map.FindAll(MapTile.Pizzeria);
+            List<Point> meetingSpots = map.FindAll(MapTile.MeetingSpot);
+
+            foreach (var meetingSpot in meetingSpots)
+            {
+                foreach (var pizzeria in pizzerias)
+                {
+                    int totalCost = 0;
+
+                    int toPizzeriaCostPerFriend = FindBestPath(map, meetingSpot, pizzeria);
+                    if (toPizzeriaCostPerFriend < 0) { break; }
+                    totalCost += toPizzeriaCostPerFriend * friends.Count;
+
+                    bool failed = false;
+                    foreach (var friend in friends)
+                    {
+                        int toMeetingCost = FindBestPath(map, friend, meetingSpot);
+                        if (toMeetingCost < 0) { failed = true; break; }
+                        totalCost += toMeetingCost;
+
+                        int toHomeCost = FindBestPath(map, pizzeria, friend);
+                        if (toHomeCost < 0) { failed = true; break; }
+                        totalCost += toHomeCost;
+                    }
+                    if (failed) { break; }
+
+                    if (totalCost < lowestCost)
+                    {
+                        lowestCost = totalCost;
+                        bestMeetingSpot = meetingSpot;
+                        bestPizzeria = pizzeria;
+                    }
+                }
+            }
+
+            if (bestMeetingSpot != null)
+            {
+                return new BestPizzeriaResult(bestPizzeria, bestMeetingSpot, lowestCost);
+            }
+            else
+            {
+                return null;
+            }
+        }
+
+        public static int FindBestPath(Map map, Point from, Point to)
+        {
+            return FindBestPath(map, from, to, new Stack<Point>());
+        }
+
+        private static int FindBestPath(Map map, Point from, Point to, Stack<Point> exploredPoints)
+        {
+            if (from.Equals(to)) { return 0; }
+
+            int minCost = -1;
+            exploredPoints.Push(from);
+            foreach (var neighbour in GetNeighbours(map, from.X, from.Y))
+            {
+                if (!exploredPoints.Contains(neighbour))
+                {
+                    int cost = FindBestPath(map, neighbour, to, exploredPoints);
+                    if (cost >= 0)
+                    {
+                        if (minCost < 0)
+                        {
+                            minCost = cost + 1;
+                        } else
+                        {
+                            minCost = Math.Min(minCost, cost + 1);
+                        }
+                    }
+                }
+            }
+            exploredPoints.Pop();
+            return minCost;
+        }
+
+        private static IEnumerable<Point> GetNeighbours(Map map, int x, int y)
+        {
+            if (map.IsInBounds(x + 1, y) && map.Get(x + 1, y) != MapTile.Wall)
+            {
+                yield return new Point(x + 1, y);
+            }
+            if (map.IsInBounds(x, y + 1) && map.Get(x, y + 1) != MapTile.Wall)
+            {
+                yield return new Point(x, y + 1);
+            }
+            if (map.IsInBounds(x - 1, y) && map.Get(x - 1, y) != MapTile.Wall)
+            {
+                yield return new Point(x - 1, y);
+            }
+            if (map.IsInBounds(x, y - 1) && map.Get(x, y - 1) != MapTile.Wall)
+            {
+                yield return new Point(x, y - 1);
+            }
+        }
+    }
+}
--- a/Recursion/LD_24/Forma1.aspx
+++ b/Recursion/LD_24/Forma1.aspx
@ -0,0 +1,26 @@
+<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Forma1.aspx.cs" Inherits="LD_24.Forma1" %>
+
+<!DOCTYPE html>
+
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head runat="server">
+    <title></title>
+</head>
+<body>
+    <form id="form1" runat="server">
+        <asp:Table ID="Table1" runat="server" BackColor="#FFFFCC" BorderColor="Black" BorderStyle="Solid" BorderWidth="1px" Font-Bold="True">
+        </asp:Table>
+        <br />
+        <br />
+        <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Skaičiuoti" />
+        <br />
+        <br />
+        <asp:Label ID="Label1" runat="server" Text="Draugų koordinatės:" Visible="False"></asp:Label>
+        <asp:BulletedList ID="BulletedList1" runat="server" Visible="False">
+        </asp:BulletedList>
+        <asp:Label ID="Label2" runat="server" Text="Susitikimas:" Visible="False"></asp:Label>
+      <br />
+        <asp:Label ID="Label3" runat="server" Visible="False"></asp:Label>
+    </form>
+</body>
+</html>
--- a/Recursion/LD_24/Forma1.aspx.cs
+++ b/Recursion/LD_24/Forma1.aspx.cs
@ -0,0 +1,109 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Web;
+using System.Web.UI;
+using System.Web.UI.WebControls;
+
+namespace LD_24
+{
+    public partial class Forma1 : System.Web.UI.Page
+    {
+        private string inputFilename;
+        private string outputFilename;
+        private Code.Map map;
+
+        protected void Page_Load(object sender, EventArgs e)
+        {
+            inputFilename = Server.MapPath(@"App_Data/U3.txt");
+            outputFilename = Server.MapPath(@"App_Data/Rezultatai.txt");
+
+            map = Code.InOutUtils.ReadMap(inputFilename);
+            ShowMap(Table1, map);
+        }
+        
+        protected void Button1_Click(object sender, EventArgs e)
+        {
+            List<Code.Point> friends = map.FindAll(Code.MapTile.Friend);
+            Code.BestPizzeriaResult result = Code.TaskUtils.FindBestPizzeria(map);
+
+            Label1.Visible = true;
+            Label2.Visible = true;
+            Label3.Visible = true;
+            BulletedList1.Visible = true;
+            ShowFriends(BulletedList1, friends);
+            ShowBestPizzeriaResult(Label3, result);
+
+            using (StreamWriter writer = new StreamWriter(outputFilename))
+            {
+                Code.InOutUtils.WriteMap(writer, map);
+                writer.Write('\n');
+                Code.InOutUtils.WriteFriendPositions(writer, friends);
+                Code.InOutUtils.WriteBestPizzeriaResult(writer, result);
+            }
+        }
+
+        private void ShowFriends(BulletedList list, List<Code.Point> friends)
+        {
+            list.Items.Clear();
+            foreach (var friend in friends)
+            {
+                list.Items.Add(String.Format("X = {0}, Y = {1}", friend.X + 1, friend.Y + 1));
+            }
+        }
+
+        private void ShowBestPizzeriaResult(Label label, Code.BestPizzeriaResult result)
+        {
+            if (result == null)
+            {
+                label.Text = "Neįmanoma";
+                return;
+            }
+
+            label.Text = String.Format("Susitikimo vieta (X = {0}, Y = {1})", result.MeetingSpot.X + 1, result.MeetingSpot.Y + 1);
+            label.Text += "<br />";
+            label.Text += String.Format("Picerija (X = {0}, Y = {1})", result.Pizzeria.X + 1, result.Pizzeria.Y + 1);
+            label.Text += "<br />";
+            label.Text += String.Format("Nueita {0}", result.Cost);
+        }
+
+        private void ShowMap(Table table, Code.Map map)
+        {
+            table.Rows.Clear();
+            for (int y = 0; y < map.Height; y++)
+            {
+                TableRow row = new TableRow();
+                for (int x = 0; x < map.Width; x++)
+                {
+                    TableCell cell = new TableCell();
+                    cell.Width = 20;
+                    cell.Height = 20;
+                    switch (map.Get(x, y))
+                    {
+                        case Code.MapTile.Empty:
+                            cell.Text = ".";
+                            break;
+                        case Code.MapTile.Pizzeria:
+                            cell.Text = "P";
+                            break;
+                        case Code.MapTile.Friend:
+                            cell.Text = "D";
+                            break;
+                        case Code.MapTile.MeetingSpot:
+                            cell.Text = "S";
+                            break;
+                        case Code.MapTile.Wall:
+                            cell.Text = "X";
+                            break;
+                        default:
+                            cell.Text = "?";
+                            break;
+                    }
+                    row.Cells.Add(cell);
+                }
+                table.Rows.Add(row);
+            }
+        }
+    }
+}
--- a/Recursion/LD_24/Forma1.aspx.designer.cs
+++ b/Recursion/LD_24/Forma1.aspx.designer.cs
@ -0,0 +1,80 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated. 
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+namespace LD_24
+{
+
+
+    public partial class Forma1
+    {
+
+        /// <summary>
+        /// form1 control.
+        /// </summary>
+        /// <remarks>
+        /// Auto-generated field.
+        /// To modify move field declaration from designer file to code-behind file.
+        /// </remarks>
+        protected global::System.Web.UI.HtmlControls.HtmlForm form1;
+
+        /// <summary>
+        /// Table1 control.
+        /// </summary>
+        /// <remarks>
+        /// Auto-generated field.
+        /// To modify move field declaration from designer file to code-behind file.
+        /// </remarks>
+        protected global::System.Web.UI.WebControls.Table Table1;
+
+        /// <summary>
+        /// Button1 control.
+        /// </summary>
+        /// <remarks>
+        /// Auto-generated field.
+        /// To modify move field declaration from designer file to code-behind file.
+        /// </remarks>
+        protected global::System.Web.UI.WebControls.Button Button1;
+
+        /// <summary>
+        /// Label1 control.
+        /// </summary>
+        /// <remarks>
+        /// Auto-generated field.
+        /// To modify move field declaration from designer file to code-behind file.
+        /// </remarks>
+        protected global::System.Web.UI.WebControls.Label Label1;
+
+        /// <summary>
+        /// BulletedList1 control.
+        /// </summary>
+        /// <remarks>
+        /// Auto-generated field.
+        /// To modify move field declaration from designer file to code-behind file.
+        /// </remarks>
+        protected global::System.Web.UI.WebControls.BulletedList BulletedList1;
+
+        /// <summary>
+        /// Label2 control.
+        /// </summary>
+        /// <remarks>
+        /// Auto-generated field.
+        /// To modify move field declaration from designer file to code-behind file.
+        /// </remarks>
+        protected global::System.Web.UI.WebControls.Label Label2;
+
+        /// <summary>
+        /// Label3 control.
+        /// </summary>
+        /// <remarks>
+        /// Auto-generated field.
+        /// To modify move field declaration from designer file to code-behind file.
+        /// </remarks>
+        protected global::System.Web.UI.WebControls.Label Label3;
+    }
+}
--- a/Recursion/LD_24/LD_24.csproj
+++ b/Recursion/LD_24/LD_24.csproj
@ -0,0 +1,140 @@
+<Project ToolsVersion="15.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.2.0.1\build\net46\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.props" Condition="Exists('..\packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.2.0.1\build\net46\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.props')" />
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProductVersion>
+    </ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{6AAB1A29-81E1-4A08-A8C3-9C203C684B8F}</ProjectGuid>
+    <ProjectTypeGuids>{349c5851-65df-11da-9384-00065b846f21};{fae04ec0-301f-11d3-bf4b-00c04f79efbc}</ProjectTypeGuids>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>LD_24</RootNamespace>
+    <AssemblyName>LD_24</AssemblyName>
+    <TargetFrameworkVersion>v4.7.2</TargetFrameworkVersion>
+    <UseIISExpress>true</UseIISExpress>
+    <Use64BitIISExpress />
+    <IISExpressSSLPort>
+    </IISExpressSSLPort>
+    <IISExpressAnonymousAuthentication />
+    <IISExpressWindowsAuthentication />
+    <IISExpressUseClassicPipelineMode />
+    <UseGlobalApplicationHostFile />
+    <NuGetPackageImportStamp>
+    </NuGetPackageImportStamp>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Web.DynamicData" />
+    <Reference Include="System.Web.Entity" />
+    <Reference Include="System.Web.ApplicationServices" />
+    <Reference Include="System.ComponentModel.DataAnnotations" />
+    <Reference Include="System" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="System.Web.Extensions" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Drawing" />
+    <Reference Include="System.Web" />
+    <Reference Include="System.Xml" />
+    <Reference Include="System.Configuration" />
+    <Reference Include="System.Web.Services" />
+    <Reference Include="System.EnterpriseServices" />
+  </ItemGroup>
+  <ItemGroup>
+    <Reference Include="Microsoft.CodeDom.Providers.DotNetCompilerPlatform">
+      <HintPath>..\packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.2.0.1\lib\net45\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.dll</HintPath>
+    </Reference>
+  </ItemGroup>
+  <ItemGroup>
+    <Content Include="App_Data\Rezultatai.txt" />
+    <Content Include="App_Data\U3.txt" />
+    <Content Include="Forma1.aspx" />
+    <Content Include="Web.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Code\BestPizzeriaResult.cs" />
+    <Compile Include="Code\InOutUtils.cs" />
+    <Compile Include="Code\Map.cs" />
+    <Compile Include="Code\MapTile.cs" />
+    <Compile Include="Code\Point.cs" />
+    <Compile Include="Code\TaskUtils.cs" />
+    <Compile Include="Forma1.aspx.cs">
+      <DependentUpon>Forma1.aspx</DependentUpon>
+      <SubType>ASPXCodeBehind</SubType>
+    </Compile>
+    <Compile Include="Forma1.aspx.designer.cs">
+      <DependentUpon>Forma1.aspx</DependentUpon>
+    </Compile>
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="packages.config" />
+    <None Include="Web.Debug.config">
+      <DependentUpon>Web.config</DependentUpon>
+    </None>
+    <None Include="Web.Release.config">
+      <DependentUpon>Web.config</DependentUpon>
+    </None>
+  </ItemGroup>
+  <ItemGroup />
+  <PropertyGroup>
+    <VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">10.0</VisualStudioVersion>
+    <VSToolsPath Condition="'$(VSToolsPath)' == ''">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)</VSToolsPath>
+  </PropertyGroup>
+  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
+  <Import Project="$(VSToolsPath)\WebApplications\Microsoft.WebApplication.targets" Condition="'$(VSToolsPath)' != ''" />
+  <Import Project="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v10.0\WebApplications\Microsoft.WebApplication.targets" Condition="false" />
+  <ProjectExtensions>
+    <VisualStudio>
+      <FlavorProperties GUID="{349c5851-65df-11da-9384-00065b846f21}">
+        <WebProjectProperties>
+          <UseIIS>True</UseIIS>
+          <AutoAssignPort>True</AutoAssignPort>
+          <DevelopmentServerPort>57614</DevelopmentServerPort>
+          <DevelopmentServerVPath>/</DevelopmentServerVPath>
+          <IISUrl>http://localhost:44363/</IISUrl>
+          <NTLMAuthentication>False</NTLMAuthentication>
+          <UseCustomServer>False</UseCustomServer>
+          <CustomServerUrl>
+          </CustomServerUrl>
+          <SaveServerSettingsInUserFile>False</SaveServerSettingsInUserFile>
+        </WebProjectProperties>
+      </FlavorProperties>
+    </VisualStudio>
+  </ProjectExtensions>
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('..\packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.2.0.1\build\net46\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.2.0.1\build\net46\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.props'))" />
+  </Target>
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>
--- a/Recursion/LD_24/Properties/AssemblyInfo.cs
+++ b/Recursion/LD_24/Properties/AssemblyInfo.cs
@ -0,0 +1,35 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("LD_24")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("LD_24")]
+[assembly: AssemblyCopyright("Copyright ©  2022")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible 
+// to COM components.  If you need to access a type in this assembly from 
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+// The following GUID is for the ID of the typelib if this project is exposed to COM
+[assembly: Guid("6aab1a29-81e1-4a08-a8c3-9c203c684b8f")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Revision and Build Numbers 
+// by using the '*' as shown below:
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]
--- a/Recursion/LD_24/Web.Debug.config
+++ b/Recursion/LD_24/Web.Debug.config
@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!-- For more information on using web.config transformation visit https://go.microsoft.com/fwlink/?LinkId=125889 -->
+
+<configuration xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">
+  <!--
+    In the example below, the "SetAttributes" transform will change the value of 
+    "connectionString" to use "ReleaseSQLServer" only when the "Match" locator 
+    finds an attribute "name" that has a value of "MyDB".
+    
+    <connectionStrings>
+      <add name="MyDB" 
+        connectionString="Data Source=ReleaseSQLServer;Initial Catalog=MyReleaseDB;Integrated Security=True" 
+        xdt:Transform="SetAttributes" xdt:Locator="Match(name)"/>
+    </connectionStrings>
+  -->
+  <system.web>
+    <!--
+      In the example below, the "Replace" transform will replace the entire 
+      <customErrors> section of your web.config file.
+      Note that because there is only one customErrors section under the 
+      <system.web> node, there is no need to use the "xdt:Locator" attribute.
+      
+      <customErrors defaultRedirect="GenericError.htm"
+        mode="RemoteOnly" xdt:Transform="Replace">
+        <error statusCode="500" redirect="InternalError.htm"/>
+      </customErrors>
+    -->
+  </system.web>
+</configuration>
--- a/Recursion/LD_24/Web.Release.config
+++ b/Recursion/LD_24/Web.Release.config
@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!-- For more information on using web.config transformation visit https://go.microsoft.com/fwlink/?LinkId=125889 -->
+
+<configuration xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">
+  <!--
+    In the example below, the "SetAttributes" transform will change the value of 
+    "connectionString" to use "ReleaseSQLServer" only when the "Match" locator 
+    finds an attribute "name" that has a value of "MyDB".
+    
+    <connectionStrings>
+      <add name="MyDB" 
+        connectionString="Data Source=ReleaseSQLServer;Initial Catalog=MyReleaseDB;Integrated Security=True" 
+        xdt:Transform="SetAttributes" xdt:Locator="Match(name)"/>
+    </connectionStrings>
+  -->
+  <system.web>
+    <compilation xdt:Transform="RemoveAttributes(debug)" />
+    <!--
+      In the example below, the "Replace" transform will replace the entire 
+      <customErrors> section of your web.config file.
+      Note that because there is only one customErrors section under the 
+      <system.web> node, there is no need to use the "xdt:Locator" attribute.
+      
+      <customErrors defaultRedirect="GenericError.htm"
+        mode="RemoteOnly" xdt:Transform="Replace">
+        <error statusCode="500" redirect="InternalError.htm"/>
+      </customErrors>
+    -->
+  </system.web>
+</configuration>
--- a/Recursion/LD_24/Web.config
+++ b/Recursion/LD_24/Web.config
@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  For more information on how to configure your ASP.NET application, please visit
+  https://go.microsoft.com/fwlink/?LinkId=169433
+  -->
+<configuration>
+  <system.web>
+    <compilation debug="true" targetFramework="4.7.2" />
+    <httpRuntime targetFramework="4.7.2" />
+	<globalization fileEncoding="utf-8" />
+  </system.web>
+  <system.codedom>
+    <compilers>
+      <compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:default /nowarn:1659;1699;1701" />
+      <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:default /nowarn:41008 /define:_MYTYPE=\&quot;Web\&quot; /optionInfer+" />
+    </compilers>
+  </system.codedom>
+</configuration>
--- a/Recursion/LD_24/packages.config
+++ b/Recursion/LD_24/packages.config
@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="Microsoft.CodeDom.Providers.DotNetCompilerPlatform" version="2.0.1" targetFramework="net472" />
+</packages>
--- a/Recursion/Recursion.sln
+++ b/Recursion/Recursion.sln
@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.1.32210.238
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "LD_24", "LD_24\LD_24.csproj", "{6AAB1A29-81E1-4A08-A8C3-9C203C684B8F}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{6AAB1A29-81E1-4A08-A8C3-9C203C684B8F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{6AAB1A29-81E1-4A08-A8C3-9C203C684B8F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{6AAB1A29-81E1-4A08-A8C3-9C203C684B8F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{6AAB1A29-81E1-4A08-A8C3-9C203C684B8F}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {285CDE53-D9E3-4FC7-A17F-A5702B740D70}
+	EndGlobalSection
+EndGlobal