[LeetCode 9] Palindrome Number (

Don't convert the number into String

public class Solution {
    public boolean isPalindrome(int x) {
        if (x < 0)  return false;
        
        //1. get divider
        int div = 1;
        int number = x;
        while (number / div >= 10) {
            div = div * 10;
        }
        
        System.out.println (div);
        // 2. find the palindrom
        while (div  != 0) {
            int first = number / div;
            int last = number % 10;
            
            if (first != last)
                return false;
            number = (number - first * div) / 10;
            div = div / 100;
        }
         
        return true;
    }
    

}