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  1. import java.util.*;
  2. import java.lang.*;
  3.  
  4. class Main
  5. {
  6. 	public static void main (String[] args) throws java.lang.Exception
  7. 	{
  8. 		String str = "AB CD #E     F# #GH   I# JK L   M";
  9.         String repl = str.replaceAll("\\s+(?=(?:(?:[^#]*#){2})*[^#]*$)", "");
  10.         System.out.printf("Replaced: [%s]%n", repl);
  11. 	}
  12. }
Success #stdin #stdout 0.07s 380224KB
comments (?)
stdin 
Standard input is empty
stdout 
Replaced: [ABCD#E     F##GH   I#JKLM]
https://ideone.com/nFQhVt
language:
Java (HotSpot 12)
created:
12 years ago
visibility:
public

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