Palindrome Number

public class Solution {
    public boolean isPalindrome(int x) {
    // http://blog.csdn.net/linhuanmars/article/details/21145231
        if(x<0) return false;
        int div = 1;
        while(x/div>=10){
            div *=10;
        }
        while(x>0){
            if(x/div!=x%10)
                return false;
            x = (x%div)/10;
            div/=100;
        }
        return true;
    }
}