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
Solution： 由于A->1, 计算s的末尾时需先减去1
1 class Solution { 2 public: 3 string convertToTitle(int n) { 4 string s; 5 while(n){ 6 s = (char)(‘A‘+(n-1)%26)+s; 7 n = (n-1)/26; 8 } 9 return s; 10 } 11 };
【LeetCode】168 - Excel Sheet Column Title
原文：http://www.cnblogs.com/irun/p/4709446.html