C#检查字符串中的URL

using System;

class Demo {
   static void Main() {
      string input = "https://example.com/new.html";

      // See if input matches one of these starts.
      if (input.StartsWith("https://www.example.com") ||
      input.StartsWith("https://example.com")) {
         Console.WriteLine(true);
      }
   }
}

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