leetcode 168

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 

给定一个正整数，返回它作为出现在Excel表中的正确列向标题。相当于26进制。
代码如下：

 class Solution {
 public:
     string convertToTitle(int n) {
         string ss;
         while(n > )
         {
             ss = (char)(--n %  + 'A') + ss;
             n /= ;
         }
         return ss;
     }
 };