[Programme based on Numbers] An Automorphic number is a number whose square ends with the given…

import java.util.Scanner;

class Automorphic
{
    int l, u;      // lower and upper limits of the range
    int count;     // frequency of automorphic numbers in the range

    // parameterised constructor
    Automorphic(int l, int u)
    {
        this.l = l;
        this.u = u;
        count = 0;
    }

    // returns true if n is an automorphic number
    boolean check(int n)
    {
        long sq = (long) n * n;
        String ns = Integer.toString(n);
        String sqs = Long.toString(sq);
        return sqs.endsWith(ns);
    }

    // checks every number in the range, displays the automorphic ones and their frequency
    void list()
    {
        System.out.println("List of Automorphic numbers from " + l + " to " + u + " :");
        System.out.println("Number\tSquare");
        count = 0;
        for (int i = l; i <= u; i++)
        {
            if (check(i))
            {
                long sq = (long) i * i;
                System.out.println(i + "\t" + sq);
                count++;
            }
        }
        System.out.println("Frequency of Automorphic numbers between " + l + " to " + u + " : " + count);
    }

    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter the lower limit of the range->");
        int l = sc.nextInt();
        System.out.print("Enter the upper limit of the range->");
        int u = sc.nextInt();
        Automorphic ob = new Automorphic(l, u);
        ob.list();
    }
}