using System;

using System.Text;

public class Program

{

    public static void Main()

    {

         string inputString = "aaabbcdddddfrr";

         string outputString = RunLengthEncoding(inputString);

​

        Console.WriteLine(string.Format("The input string is {0}", inputString));

         Console.WriteLine(string.Format("The result is {0}", outputString));

    }

        //Write a function to return the compressed version of any string using the Run-length algorithm.

        //This algorithm takes any repeating character and outputs the number of occurances before the first character of that sequence.

        // For example: “aaabbcdddd” would result in “3a2bc4d”

​

        public static string RunLengthEncoding(string input)

        {

​

        }

}