Excel Sheet Column Title · LeetCode Site Generator

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"

Solution(javascript)

/**
 * @param {number} n
 * @return {string}
 */
var convertToTitle = function(n) {
    var A = "A".charCodeAt(0);
    var str = "";
    while(n > 0) {
        n--;
        str = String.fromCharCode(A+n%26) + str;
        n =parseInt(n/26);
    }
    
    return str;
};