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
Credits:
Special thanks to @ts for adding this problem and creating all test cases.
class Solution { public: int titleToNumber(string s) { int num = 0; for(int i = 0; i < s.size(); i++) { num = num * 26 + (s[i] - ‘A‘ + 1); } return num; } };
[LeetCode] Excel Sheet Column Number
原文：http://www.cnblogs.com/diegodu/p/4645942.html