Palindrome Number

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 palindrome while 123 is not.

Example 1:

Input: x = 121
Output: true

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.

Example 4:

Input: x = -101
Output: false

Constraints:

• -2³¹ <= x <= 2³¹ - 1

  solution:

/**
 * @param {number} x
 * @return {boolean}
 */
var isPalindrome = function(x) {
    if(x<0){
        return false;   
    }
    let source = x;
    let result = 0;
    while (x!=0)
    {
        let a = x % 10 ;
        x  = parseInt(x/10);
        result = result * 10 + a;

    }
    return result == source;
};