leetcode/plusone

https://leetcode.com/problems/plus-one

Plus One - LeetCode

 

vector<int> plusOne(vector<int>& digits) {
    vector<int> answer;
    
    for(int i = digits.size()-1; i >= 0; i--){
        if(digits[i] < 9){
            digits[i] = digits[i] + 1;
            break;
        }
        else{
            if(i == 0){
                digits[i]=1;
                digits.push_back(0);
            }
            else{
                digits[i]=0;
            }
        }
    }
    answer = digits;
    return answer;
}