LeetCode:977. 有序数组的平方

class Solution {
public:
    vector<int> sortedSquares(vector<int>& A) {
        for(int i=0;i<A.size();i++)
        {
            A[i]=A[i]*A[i];
        }
        sort(A.begin(),A.end());
        return A;
    }
};