码牛移动高级开发VIP正式课二三四期

private void mergeTwoSortedArray(int[] nums, int[] temp, int start, int mid, int end) {        // merge two sorted array        int index = start;        int first = start;        int second = mid + 1;        while (first <= mid && second <= end) {            if (nums[first] < nums[second]) {                temp[index++] = nums[first++];            } else {                temp[index++] = nums[second++];            }        }