Replace а href tags With URL tags

using System;

class ReplaceAhrefWithURLTags
{
  //Write a program that replaces in a HTML document given as string all the tags <a href="…">…</a> with corresponding tags [URL=…]…/URL]. Sample HTML fragment:
  //<p>Please visit <a href="http://academy.telerik. com">our site</a> to choose a training course. Also visit <a href="www.devbg.org">our forum</a> to discuss the courses.</p>
  //<p>Please visit [URL=http://academy.telerik. com]our site[/URL] to choose a training course. Also visit [URL=www.devbg.org]our forum[/URL] to discuss the courses.</p>

  static void Main()
  {
    string[] findTags = { "<a href=\"", "\">", "</a>" }; //Strings to find
    string[] replaceTags = { "[URL=", "]", "[/URL]"};//Replace strings

    string htmlText = @"<p>Please visit <a href=""http://academy.telerik. com"">our site</a> to choose a training course. Also visit <a href=""www.devbg.org"">our forum</a> to discuss the courses.</p>";//Html string to work with: @ to escape the // and double quotes ("") to escape the quotes (").

    for (int i = 0; i < findTags.Length; i++)
            {
        htmlText = htmlText.Replace(findTags[i], replaceTags[i]);//Do the replacements
            }

    Console.WriteLine(htmlText);//Print the result
  }
}