letsrevolutionizetesting.com challenge

letsrevolutionizetesting_com_challenge.cs

using System;
using System.Net;

namespace letsrevolutionizetesting
{
    class Challange 
    {
        // very quick and dirty solution to solve the letsrevolutionizetesting.com challenge 
        static void Main(string[] args)
        {
            string follow = "http://letsrevolutionizetesting.com/challenge?id=461736456";
            while (true)
            {
                string url2Follow = follow + "&format=json";
                Console.WriteLine("following: {0}", url2Follow);
                // get url = follow&format=json
                string content = string.Empty;
                using (WebClient client = new WebClient())
                {
                    content = client.DownloadString(url2Follow);
                }    
                // extract follow, if not present break while loop
                if (content.Contains("follow"))
                {
                    int startidx = content.IndexOf("\":\"", StringComparison.InvariantCultureIgnoreCase);
                    int length = content.Length - (startidx+1) - "\":\"".Length - 1; // startidx is zero based
                    follow = content.Substring(startidx + "\":\"".Length, length);
                }
                else
                    break;
            }
        }
    }
}