Reverse `nums` **in-place** and return the mutated array. Variant **#39**.
Example 1
Input: nums = [39,40,41,42,43,44,45,46,47,48,49,50]
Output: [50,49,48,47,46,45,44,43,42,41,40,39]
Constraints
Acceptance: 67% · Topics: array, two-pointers
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