leetcode: 168. Excel Sheet Column Title

168. Excel Sheet Column Title

Description

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"

Answer

func convertToTitle(n int) string {

    var result string = ""

    for n != 0 {

        if n%26 == 0 {
            result = "Z" + result
            n = n/26 - 1
        } else {
            result = string('A'+n%26-1) + result
            n = n / 26
        }
    }

    return string(result)

}