说明：  判断一个数是否为回文数，提供了两种方法以便参考，方法一：只要利用内置函数解决该问题，方法二：主要通过数组判断
(Determine if a number is palindrome, offers two ways to reference one: as long as the use of built-in functions to solve the problem, method two: mainly through the array to determine)