[LeetCode][JavaScript]Palindrome Number

Palindrome Number

Determine whether an integer is a palindrome. Do this without extra space.

https://leetcode.com/problems/palindrome-number/

判断一个数字是否为回文，OJ认为负数都不是回文。

倒转这个数字与原始的数字做比较。

/**
* @param {number} x
* @return {boolean}
*/
var isPalindrome = function(x) {
if(x < 0) return false;
var origin = x, reverse = 0;
while(x > 0){
reverse *= 10;
reverse += x % 10;
x = Math.floor(x / 10);
}
return origin === reverse;
};