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  1. using System;
  2. using System.Text.RegularExpressions;
  3.  
  4. public class Test
  5. {
  6.   public static void Main()
  7.   {
  8.     Console.WriteLine(Regex.Replace("abbcccdddd", @"(.)\1", "$1 2"));
  9.   }
  10. }
Success #stdin #stdout 0.06s 134592KB
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stdin
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Standard input is empty
stdout
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ab 2c 2cd 2d 2
https://ideone.com/ccxPbK
language:
C# (gmcs 5.20.1)
created:
5 years ago
visibility:
public

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