Given a non-zero 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
类似于数制转换，只不过1对应A，而不是0对应A
1 class Solution { 2 public: 3 string convertToTitle(int n) { 4 5 string res=""; 6 7 while(n>0) 8 { 9 int tmp=(n-1)%26; 10 res.push_back(‘A‘+tmp); 11 12 n=(n-1)/26; 13 } 14 15 string result(res.rbegin(),res.rend()); 16 return result; 17 } 18 };
【leetcode】Excel Sheet Column Title
原文：http://www.cnblogs.com/reachteam/p/4175758.html