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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4. import java.util.regex.*;
  5. /* Name of the class has to be "Main" only if the class is public. */
  6. class Ideone
  7. {
  8. 	public static void main (String[] args) throws java.lang.Exception
  9. 	{
  10. 		String sentence = "4-2-3-1";
  11. 		Pattern pCode = Pattern.compile("\\b\\d(?:\\s?-\\s?\\d){2,}\\b");
  12. 		Matcher mCode = pCode.matcher(sentence);
  13.         StringBuffer sb = new StringBuffer();
  14.         while (mCode.find()) {
  15.            	mCode.appendReplacement(sb,  mCode.group().replace("-", " "));
  16.         }
  17.         mCode.appendTail(sb);
  18.         System.out.println(sb);
  19. 	}
  20. }
Success #stdin #stdout 0.07s 33712KB
comments (?)
stdin 
Standard input is empty
stdout 
4 2 3 1
https://ideone.com/yHrEEo
language:
Java (HotSpot 12)
created:
4 years ago
visibility:
secret

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