Related to question
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 for adding this problem and creating all test cases.这题实际上相当于一种二十六进制转十进制的问题，并不难，只要一位一位的转换即可。代码如下：
class Solution {public: int titleToNumber(string s) { int n = s.size(); int res = 0; int tmp = 1; for (int i = n; i >= 1; --i) { res += (s[i - 1] - 'A' + 1) * tmp; tmp *= 26; } return res; }}; 本文转自博客园Grandyang的博客，原文链接：，如需转载请自行联系原博主。