feat: add "Lab4.AddSurname"

Lab4.AddSurname/Duomenys.txt

@@ -0,0 +1,9 @@
+Arvydas (g. 1964 m. gruodžio 19 d. Kaune) – Lietuvos krepšininkas,
+olimpinis ir pasaulio čempionas Arvydas, nuo Arvydas
+2011 m. spalio 24 d. Lietuvos krepšinio federacijos prezidentas.
+Profesionalaus žaidėjo karjerą Arvydas pradėjo 1981 m.
+Kauno krepšinio klube "Žalgiris".
+Arvydas tris sezonus iš eilės (1985–1987 m.). Arvydas
+padėjo komandai iškovoti SSRS krepšinio čempionato aukso medalius.
+1982 m. Arvydas SSRS rinktinės Arvydas sudėtyje Arvydas
+dalyvavo pasaulio krepšinio čempionate ir laimėjo auksą.

Lab4.AddSurname/Lab4.AddSurname.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

Lab4.AddSurname/Program.cs

@@ -0,0 +1,16 @@
+
+namespace Lab4.AddSurname
+{
+	public class Program
+	{
+		public static void Main(string[] args)
+		{
+			const string CFd = "Duomenys.txt";
+			const string CFr = "Rezultatai.txt";
+			string punctuation = " .,!?:;()\t'";
+			string name = "Arvydas";
+			string surname = "Sabonis";
+			TaskUtils.Process(CFd, CFr, punctuation, name, surname);
+		}
+	}
+}

Lab4.AddSurname/TaskUtils.cs

@@ -0,0 +1,52 @@
+using System.Text;
+using System.IO;
+
+namespace Lab4.AddSurname
+{
+	public class TaskUtils
+	{
+		/** Finds name in the line and constructs new line appending given surname.
+		 @param line – string of data
+		 @param punctuation – punctuation marks to separate words
+		 @param name – word to find
+		 @param surname – given word to add
+		 @param newLine – string of result */
+		private static void AddSurname(string line, string punctuation, string name, string surname, StringBuilder newLine)
+		{
+			string addLine = " " + line + " ";
+			int init = 1;
+			int ind = addLine.IndexOf(name);
+			while (ind != -1)
+			{
+				if (punctuation.IndexOf(addLine[ind - 1]) != -1 && punctuation.IndexOf(addLine[ind + name.Length]) != -1)
+				{
+					newLine.Append(addLine.Substring(init, ind + name.Length - init));
+					newLine.Append(surname);
+					init = ind + name.Length;
+				}
+				ind = addLine.IndexOf(name, ind + 1);
+			}
+			newLine.Append(line.Substring(init - 1));
+		}
+
+		/** Reads file and adds given surname to the given name.
+		 @param fin – name of data file
+		 @param fout – name of result file
+		 @param punctuation – punctuation marks to separate words
+		 @param name – word to find
+		 @param surname – given word to add */
+		public static void Process(string fin, string fout, string punctuation, string name, string surname)
+		{
+			string[] lines = File.ReadAllLines(fin, Encoding.UTF8);
+			using (var writer = File.CreateText(fout))
+			{
+				foreach (string line in lines)
+				{
+					StringBuilder newLine = new StringBuilder();
+					AddSurname(line, punctuation, name, surname, newLine);
+					writer.WriteLine(newLine);
+				}
+			}
+		}
+	}
+}

Lab4.sln

@@ -11,6 +11,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lab4.LetterFrequency", "Lab
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lab4.FirstEqualLast", "Lab4.FirstEqualLast\Lab4.FirstEqualLast.csproj", "{83CB5DEC-25E5-42FF-8601-9BF8DA73E397}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lab4.AddSurname", "Lab4.AddSurname\Lab4.AddSurname.csproj", "{F7EFA186-AD5D-4E5D-B405-9ACBAEDB7BF3}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -37,6 +39,10 @@ Global
 		{83CB5DEC-25E5-42FF-8601-9BF8DA73E397}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{83CB5DEC-25E5-42FF-8601-9BF8DA73E397}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{83CB5DEC-25E5-42FF-8601-9BF8DA73E397}.Release|Any CPU.Build.0 = Release|Any CPU
+		{F7EFA186-AD5D-4E5D-B405-9ACBAEDB7BF3}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{F7EFA186-AD5D-4E5D-B405-9ACBAEDB7BF3}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{F7EFA186-AD5D-4E5D-B405-9ACBAEDB7BF3}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{F7EFA186-AD5D-4E5D-B405-9ACBAEDB7BF3}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE