原题链接https://leetcode.com/problems/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
直接水过
class Solution {
public:
int titleToNumber(string s) {
int res = 0;
for (int i = 0; i < s.length(); ++i)
res = res * 26 + (s[i] - 'A' + 1);
return res;
}
};