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  1. import java.util.Arrays;
  2. import java.util.Comparator;
  3.  
  4. public class Main {
  5.     public static void main( String[] args ) {
  6. 		String[] dictionary = new String[] {"SAD", "PAD", "SAP", "BAD", "SIT"};
  7. 		System.out.println( "Before sort dictionary: " + Arrays.toString(dictionary) );
  8. 	    Arrays.sort(dictionary, dialPadNumCompare);
  9. 	    System.out.println( "After sort dictionary: " + Arrays.toString(dictionary) );
  10. 	}
  11. 	public static Comparator<String> dialPadNumCompare = new Comparator<String>(){
  12. 	    @Override
  13. 	    public int compare(String a, String b){
  14. 	        int inta = stringToInt(a);
  15. 	        int intb = stringToInt(b);
  16. 	    	if (inta == intb)
  17. 	            return a.compareTo(b);
  18. 	        return inta - intb;
  19. 	    }
  20. 	};
  21. 	public static int stringToInt(String msg){
  22. 	    int out = 0;
  23. 	    for (int i = 0; i < msg.length(); i++ ){
  24. 	        out *= 10;
  25. 	        out += charToDigit(msg.charAt(i));
  26.  
  27. 	    }
  28. 	    return out;
  29. 	}
  30. 	public static int charToDigit(char a){
  31. 	    if (a > ('A' - 1) && a <= 'C'){
  32. 	        return 2;
  33. 	    }
  34. 	    if (a > 'C' && a <= 'F'){
  35. 	        return 3;
  36. 	    }
  37. 	    if (a > 'F' && a <= 'I'){
  38. 	        return 4;
  39. 	    }
  40. 	    if (a > 'I' && a <= 'L'){
  41. 	        return 5;
  42. 	    }
  43. 	    if (a > 'L' && a <= 'O'){
  44. 	        return 6;
  45. 	    }
  46. 	    if (a > 'O' && a <= 'S'){
  47. 	        return 7;
  48. 	    }
  49. 	    if (a > 'S' && a <= 'V'){
  50. 	        return 8;
  51. 	    }
  52. 	    if (a > 'V' && a <= 'Z'){
  53. 	        return 9;
  54. 	    }
  55. 	    return 0;
  56. 	}
  57. }
Success #stdin #stdout 0.02s 245632KB
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Standard input is empty
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Before sort dictionary: [SAD, PAD, SAP, BAD, SIT]
After sort dictionary: [BAD, PAD, SAD, SAP, SIT]
https://ideone.com/sYoD6r
language:
Java (HotSpot 12)
created:
11 years ago
visibility:
public

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