How to Check Automorphic Number using Java Program

Automorphic numbers are the numbers whose square ends with the number itself or you can say it is a number whose square ends with the given integer. For example,5 is an automorphic number as the square of 5 is 25 and its square consists of number 5 in the end. Similarly 6 is an automorphic number as the square of 6 is 36 and its square consists of number 6 at the end. Here we are going to check whether the number entered by the user is automorphic or not.

Here is the code:

import java.math.*;
import java.util.*;

class AutomorphicNumber {
	static int d = 10;

	public static void main(String args[]) {
		System.out.print("Enter any number :");
		Scanner input = new Scanner(System.in);
		int n = input.nextInt();
		if (d >= n) {
			if ((n * n) % d == n) {
				System.out.println("Automorphic Number");
			} else {
				System.out.println("Not Automorphic Number");
			}
		} else if (d <= n) {
			d = d * 10;
			if ((n * n) % d == n) {
				System.out.println("Automorphic Number");
			} else {
				System.out.println("not an automorphic number");
			}
		}
	}
}

Enter any number :56
Not an automorphic number

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