Merge two sorted arrays `nums1` and `nums2` into one sorted array. Variant **#13**.
Example 1
Input: nums1 = [13,15,17,19,21,23], nums2 = [14,16,18,20]
Output: [13,14,15,16,17,18,19,20,21,23]
Constraints
Acceptance: 75% · Topics: array, sorting, two-pointers