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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
class Solution { public: string convertToTitle(int n) { string s=""; if(n==0)return s; int tmp=n; while(tmp) { tmp--; s=char(tmp%26+‘A‘)+s; tmp/=26; } return s; } };
leetcode[168]Excel Sheet Column Title
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原文地址：http://www.cnblogs.com/Vae98Scilence/p/4280676.html
