回文数

    public boolean isPalindrome(int x) {
        if (x < 0) {
            return false;
        }
        if (x != 0 && x % 10 ==0) {
            return false;
        }
        if (x < 10) {
            return true;
        }
        int palindrom = 0;
        while (x > palindrom) {
            palindrom = palindrom * 10 + x % 10;
            x = x / 10;
        }
        return x == palindrom || x == palindrom / 10;
    }