1769. Minimum Number of Operations to Move All Balls to Each Box

這題難的是題目吧哈哈

簡單來說, 每個就是每個有球的框到當前index的距離總和

class Solution {
public:
    vector<int> minOperations(string boxes) {
        int n = boxes.size();
        vector<int> box (n, 0);
        set<int> st;
        for(int i = 0; i < n ;i++){
            if(boxes[i] == '1'){
                st.insert(i);
            }
        }
        vector<int> res(n,0);
        for(int i = 0; i < n;i++){
            for(auto ball : st){
                if(ball != i){
                    res[i]+= abs(i - ball);
                }
            }
        }
        return res;
    }
};