C++ | Leetcode C++题解之第396题旋转图像

题目：

题解：

class Solution {
public:int maxRotateFunction(vector<int>& nums) {int f = 0, n = nums.size();int numSum = accumulate(nums.begin(), nums.end(), 0);for (int i = 0; i < n; i++) {f += i * nums[i];}int res = f;for (int i = n - 1; i > 0; i--) {f += numSum - n * nums[i];res = max(res, f);}return res;}
};