Polindrome

 Given an integer x, return true if x is palindrome integer.

An integer is a palindrome when it reads the same backward as forward.

• For example, 121 is a palindrome while 123 is not.

class Polindrome {

    public boolean isPalindrome(int x) {

        int given =x;

        int reverse=0;

        while(given >0){

            reverse = 10*reverse +given%10;

            given = given/10;

        }

        if(reverse == x)

        return true;

        return false;

    }

}

This one only goes through half the elements

class Palindrome {

    public boolean isPalindrome(int x) {

// negative numbers are not a palindrome

//any number with zero in units. but not Zero by itself 

     if(x<0  || (x % 10 == 0 && x != 0) )

         return false;

    int numDigits = String.valueOf(x).length();

        int half = numDigits/2;

            int rev=0;

            int given = x;

        for(int i=0;i<half;i++){

            rev = 10*rev+given%10;

            given=given/10;

        }

        if(numDigits%2 != 0)

            given = given/10;

            if(rev==given)

                return true;

       return false;

    }

}