super.quickSort((Comparable[])a[index], 0, ((Comparable[])a[index]).length);;
super.quickSort((Object[])a[index], 0, ((Object[])a[index]).length - 1);
    public void quickSort(int index) {        super.quickSort((Comparable[])a[index], 0, ((Comparable[])a[index]).length);;    }