问题 ​​https://leetcode-cn.com/problems/excel-sheet-column-title/​​

练习使用JavaScript解答

/**
 * @param {number} n
 * @return {string}
 */
var convertToTitle = function(n) {
    var str = [], j;
    while(n>0) {
        --n;
        j = n % 26;
        str.push(String.fromCharCode(j+'A'.charCodeAt()));
        n = Math.floor(n/26);
    }
    return str.reverse().join("");
};