天池 在线编程 数组游戏

class Solution {
public:
    /**
     * @param arr: the array
     * @return: determine the number of moves to make all elements equals
     */
    long long arrayGame(vector<int> &arr) {
        // write your code here
        int ans = 0, m = *min_element(arr.begin(), arr.end());
        for(int i = 0; i < arr.size(); ++i)
            ans += arr[i]-m;
        return ans;
    }
};