171 - Excel Sheet Column Number
Total Accepted: 84177 Total Submissions: 198174 Difficulty: Easy
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
Credits:
Special thanks to @ts for adding this problem and creating all test cases.
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public class Solution {
public int titleToNumber(String s) {
int res = 0;
for(int i = 0; i < s.length(); i++) {
res = 26 * res + (s.charAt(i) - 'A' + 1);
}
return res;
}
}