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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
Credits:
Special thanks to @ifanchu for adding this problem and creating all test cases
这个可以看成是一个26进制的问题, 但是没有0, 发现没有
所以, 取余的时候要单独处理了
class Solution { public: char str[27]="ABCDEFGHIJKLMNOPQRSTUVWXYZ"; string convertToTitle(int n) { string result=""; while(n) { if(n%26) { result.push_back(str[(n%26)-1]); n /= 26; } else { result.push_back(str[25]); n = (n-26)/26; } } reverse(result.begin(),result.end()); return result; } };
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原文地址:http://blog.csdn.net/vintionnee/article/details/42368921