Java 插入排序

public static int[] insertSort(int[] nums) {
        for (int i = 1, len = nums.length; i < len; i++) {
            int current = nums[i];
            int j = i - 1;
            for (; j >= 0 && current < nums[j]; j--)
                nums[j + 1] = nums[j];
            nums[j + 1] = current;
        }

        return nums;
    }