shuffle

public class Lista {
    String[] li;
    int size, max, maxIni;

    public Lista(){
        li = new String[10];
        size = 0;
        max = maxIni = 10;
    }
        public void shuffle(){
            Integer[] bf = new Integer[size];
            String[] ret = new String[size];
            Random rand = new Random();
            int r=0;
            boolean bool;

            for     ( int a=0; a<size; a++ ){
               bool = true;
               while ( bool ){
                   bool = false;
                   r       = rand.nextInt(size);
                   for ( int b=0; b<a; b++ )
                       if( r==bf[b] ) bool = true;
            }
                bf[a]   = r;
                ret[a]  = (String) li[r];
            }
        li = ret;
    }

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