Leetcode Excel Sheet Column number

Excel Sheet Column Number Total accepted:19547 total submissions:52851 My submissions Question Solution
Related to question Excel Sheet Column Title

Given a column title as appear in an Excel sheet, and return its corresponding column number.

For example:

Very simple: ab==1*26+2

class Solution {public:    int titleToNumber(string s) {        intsum=0;        for(string::size_type i=0;i<s.size();++i)        {            sum=sum*26+s[i]-‘A‘+1;        }        returnsum;    }};

Submission Details
1000/1000 Test cases passed.
status:accepted
Runtime:14 ms

Leetcode Excel Sheet Column number