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
这个问题非常简单,我的C++代码实现如下:
string convertToTitle(int n) { string res; while (n--) { char element = ('A' + n % 26); res = element + res; n /= 26; } return res;}
时间性能如下图所示: