LeetCode 168: Excel Sheet Column Title

Given a positive integer, return its corresponding column title as appear in an Excel sheet.
For example:

    1 -> A
    2 -> B
    3 -> C
    ...
    26 -> Z
    27 -> AA
    28 -> AB 

public class Solution {
    public String convertToTitle(int n) {
        String result = "";
        
        while (n > 0)
        {
            int m = (n-1)%26;
            
            result = (char)('A'+m) + result;
            
            n = (n-1)/26;
        }
        
        return result;
    }
}