# 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"

# Solution

Approach 1: Modulo.

# Code (Python)

Approach 1:

# Code (C++)

Approach 1:

class Solution {
public:
    string convertToTitle(int n) {
        string title = "";
        while (n > 0)
        {
            title = char('A' + ((n - 1) % 26)) + title;
            n = (n - 1) / 26;
        }
        return title;
    }
};