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