9 Palindrome_Number

Determine whether an integer is a palindrome. Do this without extra space.

判断一个数是否是回文数。

public class Solution {

    public boolean isPalindrome(int x) {
        long xx = x;
        long new_xx = 0;
        while (xx > 0) {
            new_xx = new_xx * 10 + xx % 10;
            xx /= 10;
        }
        return new_xx == x;
    }  

}