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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. class Validation
  6. {
  7.  
  8. 	public static void main (String[] args) throws java.lang.Exception
  9. 	{
  10. 		testString("hello");
  11. 		testString("hell");
  12. 		testString("lol");
  13.  
  14. 		testString("heel");
  15. 		testString("loo");
  16. 	}
  17.  
  18. 	public static boolean testString(String testString)
  19. 	{
  20. 		String allowedCharacters = "hello";
  21.  
  22. 		for(int i = 0; i < testString.length(); i++) {
  23. 			int position = allowedCharacters.indexOf(testString.charAt(i));
  24.  
  25. 			if(position == -1) {
  26. 				System.out.println(testString + " - fail");
  27. 				return false;
  28. 			} else {
  29. 				allowedCharacters = allowedCharacters.substring(0, position)
  30. 							   	  + allowedCharacters.substring(position + 1);
  31. 			}
  32. 		}
  33.  
  34.  
  35. 		System.out.println(testString + " - success");
  36. 		return true;
  37. 	}
  38.  
  39. }
Success #stdin #stdout 0.1s 320256KB
comments (?)
stdin 
Standard input is empty
stdout 
hello - success
hell - success
lol - success
heel - fail
loo - fail
https://ideone.com/eTAhGM
language:
Java (HotSpot 12)
created:
9 years ago
visibility:
public

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