public static void choose(int n,int[] results){
  int k=results.length;
  for (int i=0; i < k; i++) {
    boolean done=false;
    while (!done) {
      results[i]=RANDOM.nextInt(n);
      done=true;
      for (int j=0; j < i; j++) {
        if (results[j] == results[i]) {
          done=false;
        }
      }
    }
  }
}

public static void choose ( int n , int [ ] results ) { int k = results . length ; for ( int i = 0 ; i < k ; i ++ ) { boolean done = false ; while ( ! done ) { results [ i ] = RANDOM . nextInt ( n ) ; done = true ; for ( int j = 0 ; j < i ; j ++ ) { if ( results [ j ] == results [ i ] ) { done = false ; } } } } }
choose random numbers from 0 to n - 1
