快速排序并得出下标

/**
 * 快速排序并得出下标
 *
 * @param array
 * @param start
 * @param end
 * @param indexArr
 * @return
 */
private int[] quickSort(int[] array, int start, int end, int[] indexArr) {
    int low = start;
    int high = end;
    int key = array[low];
    int curIndex = indexArr[low];
    while (low < high) {
        while (key < array[high] && low < high) high--;
        array[low] = array[high];
        indexArr[low] = high;
        while (key > array[low] && low < high) low++;
        array[high] = array[low];
        indexArr[high] = low;
    }
    array[high] = key;
    indexArr[high] = curIndex;

    if (low - 1 > start) quickSort(array, start, low - 1, indexArr);
    if (high + 1 < end) quickSort(array, high + 1, end, indexArr);
    return array;
}