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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. class Ideone
  6. {
  7. 	public static void main (String[] args) throws java.lang.Exception
  8. 	{
  9. 		String s = "X-MAS TREE and an X-MAS  TREE, and finally XMAS TREE";
  10. 		String pat = "\\b(?<!X-MAS\\s{1,100})TREE\\b";
  11. 		System.out.println(s.replaceAll(pat, "X-MAS TREE"));
  12. 	}
  13. }
Success #stdin #stdout 0.04s 711168KB
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Standard input is empty
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X-MAS TREE and an X-MAS  TREE, and finally XMAS X-MAS TREE
https://ideone.com/8eajrH
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
secret

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