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Thread: bubble sorting

  1. #1
    Junior Member stevierasilim's Avatar
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    May 2013
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    Default bubble sorting

    can anyone help me ? i have an assignment about sorting alphabetically. i tried to search information on google, i found the codes, but i just cant understand. heres what i dont understand. please help
    public class Alphasortingbubble
         public static void main(String[ ] args)
                 String[ ] names = {"joe", "slim", "ed", "george"};
                 sortStringBubble (names);
                 for ( int k = 0;  k < 4;  k++ )
                    System.out.println( names [ k ] );
          public static void sortStringBubble( String  names [ ] )
                boolean flag = true;  // will determine when the sort is finished
                String temp;
                while ( flag )
                      flag = false; // i dont understand why this is false
                      for (int i = 0;  i < names.length - 1;  i++ )
                              if ( names [ i ].compareTo( names [ i+1 ] ) > 0 )
    							  // ascending sort
    							/*i print this one and the result is number. i dont understand where the numbers come from
    							  System.out.println( "nama : " + names [ i ].compareTo( names [ i+1 ] )); */
                                          temp = names [ i ];
                                          names [ i ] = names [ i+1];     // swapping
                                          names [ i+1] = temp;
                                          flag = true; //why this is true

  2. #2
    Crazy Cat Lady KevinWorkman's Avatar
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    Default Re: bubble sorting

    How does bubble sort work, in your own words?

    You have to understand the principles behind what's going on before you dive into the code. I suggest looking at this page: Sorting Algorithm Animations
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