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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4. import java.util.regex.*;
  5.  
  6. class Ideone
  7. {
  8. 	public static void main (String[] args) throws java.lang.Exception
  9. 	{
  10. 		String s = "fffooooobbbbaarrr";
  11. 		int threshold = 2; // Should not be less than 1
  12. 		String pattern = String.format("((\\w)\\2{%1$s})\\2*", threshold-1);
  13. 		System.out.println(pattern);
  14. 		System.out.println(s.replaceAll(pattern, "$1")); 
  15. 	}
  16. }
Success #stdin #stdout 0.1s 28068KB
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stdin
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Standard input is empty
stdout
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((\w)\2{1})\2*
ffoobbaarr
https://ideone.com/NX2oUW
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
secret

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