进制问题

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 

 1 public class Solution {
 2     public String convertToTitle(int n) {
 3         int remainder = 0;
 4         String result = "";
 5         while(n!= 0){
 6             remainder = (n - 1) % 26;
 7             n = (n - 1) / 26;
 8             result = (char)(‘A‘ + remainder) + result;
 9         }
10         return result;
11     }
12 }