leetcode--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 

[java] view plain copy

1. public class Solution {  
2.     public String convertToTitle(int n) {  
3.         StringBuilder sb = new StringBuilder();  
4.         while(n>0){  
5.             n--;  
6.             char c = (char) (n%26 + 'A');  
7.             sb.insert(0,c);  
8.             n/=26;        
9.         }  
10.         return sb.toString();  
11.     }  
12. }  

原文链接http://blog.csdn.net/crazy__chen/article/details/46388189