0977. Squares of a Sorted Array

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977. Squares of a Sorted Array

Difficulty: Easy

Given an array of integers A sorted in non-decreasing order, 
return an array of the squares of each number, also in sorted non-decreasing order.

Example 1:
Input: [-4,-1,0,3,10]
Output: [0,1,9,16,100]

Example 2:
Input: [-7,-3,2,3,11]
Output: [4,9,9,49,121]

Note:
1 <= A.length <= 10000
-10000 <= A[i] <= 10000
A is sorted in non-decreasing order.
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class Solution {
    public int[] sortedSquares(int[] A) {
        for (int i = 0; i < A.length; i ++) {
            A[i] = A[i] * A[i];
        }
        
        Arrays.sort(A);
        return A;
    }
}