c_cpp 66.加上One-DifficultyEasy - 2018.8.17

Posted 2021-05-14

class Solution {
public:
    vector<int> plusOne(vector<int>& digits) {
        int workIndex = digits.size() - 1;
        while (workIndex >= -1) {
            digits[workIndex] += 1;
            if (digits[workIndex] >= 10) {
                digits[workIndex] -= 10;
                workIndex--;
            } else {
                workIndex = -2;
            }
            
            if (workIndex == -1) {
                digits.insert(digits.begin(),1);
            }
        }
    }
};