fork download
copy 
  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. 		List<String> strs = Arrays.asList("ab","aabb","aaaabbbb","aab","aaaabb");
  10. 		for (String str : strs)
  11. 			System.out.println(str + ": " + str.matches("(?:aa(?=(?:aa)*(\\1?+b)))+\\1"));
  12.  
  13. 	}
  14. }
Success #stdin #stdout 0.04s 4386816KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
ab: false
aabb: false
aaaabbbb: false
aab: true
aaaabb: true
https://ideone.com/O3s9Nf
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
secret

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!