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) {
if (n == 0) {
return "";
}
return convertToTitle((n - 1) / 26) + (char)((n - 1) % 26 + 'A');
}
}
;
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