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
比较简单，类似进制的转换，代码如下：
1 class Solution { 2 public: 3 int titleToNumber(string s) { 4 int result = 0; 5 for(int i = 0; i < s.size(); ++i){ 6 result = result * 26 + s[i] - ‘A‘ + 1; 7 } 8 return result; 9 } 10 };
LeetCode OJ：Excel Sheet Column Number（表格列数）
原文：http://www.cnblogs.com/-wang-cheng/p/4940583.html