Question

perfect number palindrome

Answer 1

Answer:

import java.util.*;

class MENU

{

public static void main(String arr[])

{

Scanner sc=new Scanner(System.in);

int i,n,r=0,d,ch,s=0;

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

n=sc.nextInt();

System.out.println("MENU");

System.out.println("1.Palindrome Number");

System.out.println("2.Perfect Number");

System.out.println("Enter your choice:");

ch=sc.nextInt();

switch(ch)

{

case 1:

for(i=n;i>0;i/=10)

{

d=i%10;

r=r*10+d;

}

if(r==n)

System.out.println("Palindrome Number");

else

System.out.println("Not a Palindrome Number");

break;

case 2:

for(i=1;i<n;i++)

{

if(n%i==0)

s=s+i;

}

if(s==n)

System.out.println("Perfect Number");

else

System.out.println("Not a Perfect Number");

break;

default:

System.out.println("Invalid choice");

}

}