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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
class Solution { public: int titleToNumber(string s) { int result; result = 0; for(int i = 0; i < s.size();i++) { result = 26 * result + (s[i] -‘A‘+1); } return result; } };
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原文地址:http://www.cnblogs.com/chdxiaoming/p/4550051.html