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  1. class Ideone
  2. {
  3. 	public static void main (String[] args) throws java.lang.Exception
  4. 	{
  5. 		String s = "01122222222";
  6.     	System.out.println(s.replaceAll("(?<=\\d{3})(\\d{2})+?", "-$1"));
  7. 	}
  8. }
Success #stdin #stdout 0.04s 320576KB
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011-22-22-22-22
https://ideone.com/hH0Ow3
language:
Java (HotSpot 12)
created:
9 years ago
visibility:
public

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