Initial data commit

Task/Run-length-encoding/C-sharp/run-length-encoding-5.cs

@@ -0,0 +1,37 @@
+using System;
+using System.Text.RegularExpressions;
+
+public class Program
+{
+    private delegate void fOk(bool ok, string message);
+
+    public static int Main(string[] args)
+    {
+        const string raw = "WWWWWWWWWWWWBWWWWWWWWWWWWBBBWWWWWWWWWWWWWWWWWWWWWWWWBWWWWWWWWWWWWWW";
+        const string code = "12W1B12W3B24W1B14W";
+
+        fOk Ok = delegate(bool ok, string message)
+        {
+            Console.WriteLine("{0}: {1}", ok ? "ok" : "not ok", message);
+        };
+        Ok(code.Equals(Encode(raw)), "Encode");
+        Ok(raw.Equals(Decode(code)), "Decode");
+        return 0;
+    }
+
+    public static string Encode(string input)
+    {
+        return Regex.Replace(input, @"(.)\1*", delegate(Match m)
+        {
+            return string.Concat(m.Value.Length, m.Groups[1].Value);
+        });
+    }
+
+    public static string Decode(string input)
+    {
+        return Regex.Replace(input, @"(\d+)(\D)", delegate(Match m)
+        {
+            return new string(m.Groups[2].Value[0], int.Parse(m.Groups[1].Value));
+        });
+    }
+}