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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 class Solution { 2 public: 3 string convertToTitle(int n) { 4 if(n<1) return ""; 5 else 6 { 7 string ret=""; 8 while(n) 9 { 10 n--; 11 char c=n%26+‘A‘; 12 ret=c+ret; 13 n/=26; 14 } 15 return ret; 16 } 17 } 18 };
【leetcode】Excel Sheet Column Title
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原文地址：http://www.cnblogs.com/jawiezhu/p/4527428.html
