using System;

using System.Diagnostics;

using System.Linq;

using System.Text.RegularExpressions;

public class Program

{

​

    public void Main()

    {

        Stopwatch sw = new Stopwatch();

        sw.Start();

        for (int i=0; i < 500; i++)

        {

            Regex linkParser = new Regex(@"\b(?:https?://|www\.)\S+\b", RegexOptions.Compiled | RegexOptions.IgnoreCase);

            string rawString = "house home go www.monstermmorpg.com nice hospital http://www.monstermmorpg.com this is incorrect url http://www.monstermmorpg.commerged continue";

        }

        sw.Stop();

        var test1Time = sw.ElapsedMilliseconds;

        sw.Reset();

        sw.Start();

        for (int i=0; i < 500; i++)

        {

            string rawString = "house home go www.monstermmorpg.com nice hospital http://www.monstermmorpg.com this is incorrect url http://www.monstermmorpg.commerged continue";

            var links = rawString.Split("\t\n ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries).Where(s => s.StartsWith("http://") || s.StartsWith("www.") || s.StartsWith("https://"));  

        }

        sw.Stop();

        var test2Time = sw.ElapsedMilliseconds;

        Console.WriteLine("Regex Test: " + test1Time.ToString());

        Console.WriteLine("Split Test: " + test2Time.ToString());

    }

}