题目链接:https://leetcode.com/problems/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
class Solution{
public:
string convertToTitle(int n)
{
string s="";
while(n>0)
{
s.push_back('A'+(char)((n-1)%26));
n=(n-1)/26;
}
reverse(s.begin(),s.end());
return s;
}
};