168. Excel Sheet Column Title
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 给定一个正整数,返回它作为出现在Excel表中的正确列向标题。相当于26进制。
代码如下:
class Solution {
public:
string convertToTitle(int n) {
string ss;
while(n > )
{
ss = (char)(--n % + 'A') + ss;
n /= ;
}
return ss;
}
};