Check Palindrome in Groovy

class CheckPalindrome {
    public static void main(String[] args) {
        def originalNumber = 12321
            
        def remainder
        def reverseNumber = 0
        def temp = originalNumber
	

         while (temp > 0) {
            remainder = temp % 10
            reverseNumber = (reverseNumber * 10) + remainder
            temp = temp.intdiv(10)
        }

        if (originalNumber == reverseNumber) {
            println("The given number is Palindrome")
        } else {
            println("The given number is NOT a Palindrome")
        }
    }
}

class CheckPalindrome {
    public static void main(String[] args) {

        String originalString = "Madam";
        String reverseString = "";

        int length = originalString.length();

        for(int i = length - 1; i >= 0; i --) {
            reverseString = reverseString + originalString.charAt(i);
        }

        // Case in-sensitive comparision
        if (originalString.equalsIgnoreCase(reverseString)) {
            System.out.println("The given string is Palindrome");
        } else {
            System.out.println("The given string is NOT a Palindrome");
        }
    }
}