Write A Program In Java Accept A Number From The User And Check Whether It Is A Automorphic Number Or Not Using pure(Return) Function.

An Automorphic number is a number whose square ends with the same digits as the original number. 

E.g – 25, 76, 376 etc.

Program:

import java.util.*; 

public class Automorphic_pure_fun 

{

    public int fun(int n)

    {

    int c=0,sqr=1,lastSquareDigits;

    sqr = n*n;

        while(n>0)

        {

            c++;

            n=n/10;

        }

        lastSquareDigits=(int)(sqr%(Math.pow(10,c)));

        return(lastSquareDigits);

    }

     public static void main(String args[])

      {

       int no,p,temp;

        Scanner sc= new Scanner(System.in);

        System.out.println("Enter a number");

        no=sc.nextInt();

        temp=no;

        Automorphic_pure_fun obj=new Automorphic_pure_fun ();

        p=obj.fun(no);

        if(p == temp)

        {

        System.out.println("Automorphic number");

        }

        else

        System.out.println("Not an Automorphic number");

    }

}

Output:

Enter a number

5

Automorphic number

 

Enter a number

12

Not an Automorphic number