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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6. import java.util.regex.Pattern;
  7.  
  8. /* Name of the class has to be "Main" only if the class is public. */
  9. class Ideone
  10. {
  11. 	private static long nano;
  12. 	private static Pattern p = Pattern.compile("\\w+(?:\\.\\*)?$");
  13.  
  14. 	public static void main (String[] args) throws java.lang.Exception
  15. 	{
  16. 		String original = "testing.asd.five";
  17.  
  18. 		// your code goes here
  19. 		ts();
  20. 			System.out.println(test1(original));
  21. 		te();
  22.  
  23. 		ts();
  24. 			System.out.println(test2(original));
  25. 		te();
  26.  
  27. 		ts();
  28. 			System.out.println(test3(original));
  29. 		te();
  30. 	}
  31.  
  32. 	private static void ts () {
  33. 		nano = System.nanoTime();
  34. 	}
  35.  
  36. 	private static void te () {
  37. 		System.out.println("Time: "+(System.nanoTime()-nano));
  38. 		System.out.println();
  39. 	}
  40.  
  41. 	static String test1(String s) {
  42. 	    if (s.endsWith(".*")) {
  43. 	        s = s.substring(0, s.length() - 2);
  44. 	    }
  45.  
  46. 	    int pos = s.lastIndexOf('.') + 1;
  47. 	    return s.substring(0, pos) + '*';
  48. 	}
  49.  
  50. 	protected static String test2 (String permission) {
  51. 		return permission.replaceAll("\\w+(?:\\.\\*)?$", "*");
  52. 	}
  53.  
  54. 	protected static String test3 (String permission) {
  55. 		return p.matcher(permission).replaceFirst("*");
  56. 	}
  57. }
Success #stdin #stdout 0.1s 320320KB
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stdin
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Standard input is empty
stdout
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testing.asd.*
Time: 455091

testing.asd.*
Time: 964303

testing.asd.*
Time: 237979
https://ideone.com/vsObMZ
language:
Java (HotSpot 12)
created:
9 years ago
visibility:
public

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