Palindrome Number

Description

Given an integer x, return true if x is palindrome integer.

An integer is a palindrome when it reads the same backward as forward.

• For example, 121 is a palindrome while 123 is not.

 

Example 1:

Input: x = 121
Output: true
Explanation: 121 reads as 121 from left to right and from right to left.

Example 2:

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

 

Constraints:

• -231 <= x <= 231 - 1

 

Follow up: Could you solve it without converting the integer to a string?

Solution(javascript)

/**
 * @param {number} x
 * @return {boolean}
 */
var isPalindrome = function(x) {
    let reversedX = '';
    x = x.toString()
    for(let i = 0; i < x.length; i++) {
        reversedX = x[i] + reversedX
    }
    if (reversedX === x) {
        return true
    } else {
        return false
    }
    
};