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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. 		var str = "74Mercedes1980";
  9. 		var n = 3;
  10. 		var ch = 'H';
  11. 		var regex = new Regex("(\\S{" + (n - 1) + "})\\S");
  12. 		str = regex.Replace(str, "$1" + ch);
  13. 		Console.WriteLine(str);
  14. 	}
  15. }
Success #stdin #stdout 0.08s 27116KB
comments ()
stdin 
Standard input is empty
stdout 
74HerHedHs1H80
https://ideone.com/Sgc42N
language:
C# (gmcs 5.20.1)
created:
2 years ago
visibility:
secret

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