【leetcode】Excel Sheet Column Number

Excel Sheet Column Number

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 n=s.length();
         int result=;
         for(int i=;i<n;i++)
         {
             int num=s[i]-'A'+;
             result=result*+num;
         }

         return result;
     }
 };