# Merge Sorted Arrays Lab

In this lab, you will be working on merging two integer arrays, `nums1`

and `nums2`

, which are sorted in non-decreasing order. The goal is to merge them into a single combined array, sorted in a non-decreasing order, and store it inside the array `nums1`

. The input arrays are represented by `nums1`

, `nums2`

, and their respective element counts `m`

and `n`

.

The array `nums1`

has a length of `m + n`

, with the first `m`

elements being the initial elements that need to be merged and the last `n`

elements being set to `0`

and ignored. The array `nums2`

has a length of `n`

.

## Examples

### Example 1

**Input:** nums1 = [1,2,3,0,0,0], m = 3, nums2 = [2,5,6], n = 3
**Output:** [1,2,2,3,5,6]
**Explanation:** The arrays we are merging are [1,2,3] and [2,5,6]. The result of the merge is [1,2,2,3,5,6].

### Example 2

**Input:** nums1 = [1], m = 1, nums2 = [], n = 0
**Output:** [1]
**Explanation:** The arrays we are merging are [1] and []. The result of the merge is [1].

### Example 3

**Input:** nums1 = [0], m = 0, nums2 = [1], n = 1
**Output:** [1]
**Explanation:** The arrays we are merging are [] and [1]. The result of the merge is [1]. Note that because m = 0, there are no elements in nums1. The 0 is only there to ensure the merge result can fit in nums1.

## Constraints

`nums1.length == m + n`

`nums2.length == n`

`0 <= m, n <= 200`

`1 <= m + n <= 200`

`-109 <= nums1[i], nums2[j] <= 109`

## Follow-up

Can you come up with an algorithm that runs in O(m + n) time?