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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
C++实现代码：
#include<iostream> #include<string> #include<algorithm> using namespace std; class Solution { public: string convertToTitle(int n) { char c[26]= {‘A‘,‘B‘,‘C‘,‘D‘,‘E‘,‘F‘,‘G‘,‘H‘,‘I‘,‘J‘,‘K‘,‘L‘,‘M‘,‘N‘,‘O‘,‘P‘,‘Q‘,‘R‘,‘S‘,‘T‘,‘U‘,‘V‘,‘W‘,‘X‘,‘Y‘,‘Z‘}; string str=""; if(n<27) return str+c[--n]; while(n) { str+=c[(--n)%26]; n/=26; } reverse(str.begin(),str.end()); return str; } }; int main() { Solution s; cout<<s.convertToTitle(26)<<endl; }
参考：http://www.cnblogs.com/ganganloveu/p/4175848.html
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原文地址：http://www.cnblogs.com/wuchanming/p/4179648.html
