c_cpp 66.cpp

Posted 2021-05-14

class Solution {
public:
    vector<int> plusOne(vector<int>& digits) {
        vector<int> tp(digits), ret;
        tp[tp.size() - 1]++;
        for(int i = tp.size() - 1; i > 0; i--) {
            //cout << i << " " << tp[i] << endl;
            if (tp[i] >= 10) {
                tp[i] %= 10;
                tp[i-1]++;
            } else break;
        }
        if (tp[0] >= 10) {
            ret.push_back(1);
            tp[0] %= 10;
        }
        for(int i = 0; i != (int)tp.size(); i++) {
            ret.push_back(tp[i]);
        }
        return ret;
    }
};