59. Palindrome Number

public class Solution {
    public boolean isPalindrome(int x) {
if (x < 0) return false;

// initialize how many zeros
int div = 1;
while (x / div >= 10) {
div *= 10;
}

while (x != 0) {
int left = x / div;
int right = x % 10;

if (left != right)
return false;

x = (x % div) / 10;
div /= 100;
}

return true;
    }
}