leetcode记录,难度简单:9.判断整数是否是回文

题目出处:https://leetcode.com/problems/palindrome-number/

题目描述:

确定整数是否是回文。 当它向前读取向后时,整数是回文。

回文就是无论是从左至右还是从右至左,结果都一样。已经确定是整数,不含字母。

Example 1:

Input: 121
           Output: true

Example 2:

Input: -121
           Output: false
           Explanation: From left to right, it reads -121. From right to left, it becomes 121-. Therefore it is not a palindrome.

Example 3:

Input: 10
           Output: false
           Explanation: Reads 01 from right to left. Therefore it is not a palindrome.

代码:

/**
 * @param {number} x
 * @return {boolean}
 */
var isPalindrome = function(x) {
    var result = true;
    var xb;
    xb = x.toString().split('').reverse();
    xb = Number(xb.join(''));
    if(xb !== x){
        result = !result
    }
    return result
     
};

 

 

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