leetcode brush title notes (python3) - 168 Excel Sheet Column Title.

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 
...

Example 1:

Input: 1
Output: “A”
Example 2:

Input: 28
Output: “AB”
Example 3:

Input: 701
Output: “ZY”

func convertToTitle(n int) string {
	res := ""
	for n > 0 {
		n--
		res = string(n%26+'A') + res
		n = n / 26
	}
	return res
}