fork(1) download 
  1. /* package whatever; // don't place package name! */
  2. import java.util.regex.Pattern;
  3. import java.util.regex.Matcher;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		Pattern pat = Pattern.compile( "^(?!.*__)(?=[A-Za-z])[a-z A-Z0-9_]+(?<![ _])$" );
  13. 		String text = "c             a                      b                      d";
  14. 		for ( int i=0; i<100; i++ ) {
  15. 			long t1 = System.currentTimeMillis();
  16.  
  17. 			test(text, pat);
  18.  
  19. 			long t2 = System.currentTimeMillis();
  20. 	        System.out.println( t2 - t1 ) ;
  21. 		}
  22. 	}
  23.  
  24. 	public static boolean test(String text, Pattern p) {
  25. 		boolean b = false;
  26. 		for ( int i=0; i<400000; i++ ) {
  27.                  b = match(text, p);
  28.         }
  29.  
  30. 		return b;
  31. 	}
  32.  
  33. 	public static boolean match(String text, Pattern p) {
  34. 		Matcher m = p.matcher( text );
  35.  
  36. 		return m.matches();
  37. 	}
  38. }
Time limit exceeded #stdin #stdout 5s 320576KB
comments (?)
stdin 
Standard input is empty
stdout 
3777
https://ideone.com/6JU2Ln
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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!