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  1. /* http://es.stackoverflow.com/q/32488/127 */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5.  
  6. /* Name of the class has to be "Main" only if the class is public. */
  7. class Ideone
  8. {
  9. 	public static void main (String[] args) throws java.lang.Exception
  10. 	{
  11. 		String frase = "hola    hola     caracola    !";
  12. 		String nuevaFrase = frase.replaceAll(" {2,}"," ");
  13.  
  14. 		System.out.println("Antes: " + frase + "\nDespués: " + nuevaFrase);
  15. 	}
  16. }
Success #stdin #stdout 0.04s 711168KB
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stdin
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Standard input is empty
stdout
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Antes: hola    hola     caracola    !
Después: hola hola caracola !
https://ideone.com/9TSrkk
http://es.stackoverflow.com/q/32488/127
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
secret

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