Problem:app
Related to question Excel Sheet Column Titlespa
Given a column title as appear in an Excel sheet, return its corresponding column number.excel
For example:code
A -> 1 B -> 2 C -> 3 ... Z -> 26 AA -> 27 AB -> 28
A possible answer:blog
class Solution { public: int titleToNumber(string s) { int res=0; for(int i=0;i<s.size();i++) { res = res*26+ s[i]-'A'+1; } return res; } };