feat: ✨ Finish DelteLine

Stream/Program.cs

@@ -1,3 +1,3 @@
 // See https://aka.ms/new-console-template for more information
 
-Stream.Stream.MyReplace("test.txt", 'u', 'a');
+Stream.Stream.MyReplace("testsqdmfljqsfmlj.txt", 'u', 'a');

Stream/Stream.cs

@@ -41,4 +41,36 @@ public class Stream
             throw new ArgumentException("Error");
         }
     }
+
+    public static void DeleteLines(string path, int n)
+    {
+        string temp = String.Empty;
+        string final = String.Empty;
+        int i = 0;
+        try
+        {
+            using (StreamReader sr = new StreamReader(path))
+            {
+                string? line;
+                while ((line = sr.ReadLine()) != null)
+                {
+                    if (i % n != 0)
+                    {
+                        final += line + "\n";
+                    }
+
+                    i++;
+                }
+                using (StreamWriter sw = new StreamWriter(path))
+                {
+
+                    sw.Write(final);
+                }
+            }
+        }
+        catch (Exception)
+        {
+            throw new ArgumentException("Error");
+        }
+    }
 }