Leetcode: Excel Sheet Column Number



Related to question Excel Sheet Column Title

Given a column title as appear in an Excel sheet, return its corresponding column number.

For example:

    A -> 1    B -> 2    C -> 3    ...    Z -> 26    AA -> 27    AB -> 28 

简单的有点怀疑。

class Solution {public:    int titleToNumber(string s) {        int result = 0;        for (int i = 0; i < s.size(); ++i) {            result = result * 26 + s[i] - 'A' + 1;        }                return result;    }};