public static int[] sort(int[] array) {
        int[] order = new int[array.length];
        for (int i = 0; i < order.length; i++) {
            order[i] = i;
        }
        sort(array, order);
        return order;
    }
@Test
    public void testSortBig() {
        System.out.println("sort big array");
        QuickSort.sort(big);
    }