Given an integer array nums sorted in non-decreasing order, return an array of the squares of each number sorted in non-decreasing order.
Input: nums = [-4,-1,0,3,10]
Output: [0,1,9,16,100]
Explanation: After squaring, the array becomes [16,1,0,9,100]. After sorting, it becomes [0,1,9,16,100].
Input: nums = [-7,-3,2,3,11]
Output: [4,9,9,49,121]
Input: nums = [0,2,4,6,8]
Output: [0,4,16,36,64]
nums is sorted in non-decreasing order.