Given an unsorted array nums , reorder it in-place such that nums[0] <= nums[1] >= nums[2] <= nums[3]... .
nums
nums[0] <= nums[1] >= nums[2] <= nums[3]...
Example:
Input: nums = [3,5,2,1,6,4] Output: One possible answer is [3,5,1,6,2,4]
nums = [3,5,2,1,6,4]