标签:style color io os ar for c on amp
//Given a non-negative number represented as an array of digits, plus one to the number.
//The digits are stored such that the most significant digit is at the head of the list.
//digits={9,9,9,9},那么经过函数运算变为{1,0,0,0},也就是把vector中各位存储的数字看成一个整数的各个位,digits[0]为最高位
class Solution {
public:
vector<int> plusOne(vector<int> &digits) {
if(digits.size() == 0){
digits.push_back(1);
return digits;
}
int carry = 0;
int i = 0;
int current;
int size = digits.size();
for(i = size - 1; i >=0 ; i--){
if(i == size -1){
current = (digits[i] + 1);
} else {
current = (digits[i] + carry);
}
carry = current / 10;
digits[i] = current % 10;
}
if(carry != 0){
digits.insert(digits.begin(), carry);
}
return digits;
}
};标签:style color io os ar for c on amp
原文地址:http://blog.csdn.net/wyj7260/article/details/39827275