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
public class Solution { public int titleToNumber(String s) { int number = 0 ; int temp = 0; for(int i = 0 ; i < s.length();i++){ temp = s.charAt(i)-'A' + 1; number = number*26 + temp; } return number; } }