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  1. using System.Text.RegularExpressions;
  2.  
  3. public class Test
  4. {
  5. public static void Main()
  6. {
  7. string lista = "RUASANTA HELENA, 769 AP 51 BL H JD ALVORADA~ 17513322 ";
  8.  
  9. var texto = Regex.Replace(lista, @"([\d]+)(?=\s+)", "$1~");
  10.  
  11. System.Console.Write(texto);
  12. }
  13. }
Success #stdin #stdout 0.02s 30288KB
stdin
Standard input is empty
stdout
RUASANTA HELENA, 769~  AP 51~ BL H JD ALVORADA~ 17513322~