Write a program in java to accept a number from the user and check whether it is a Palindrome number or not using pure function (return type).

Palindrome number – a number is a Palindrome which when read in reverse order is same as read in the right order. Example: 121, 11, 15451, etc.

Program:

import java.util.*;
class Palin_pure_func
{
  public int f1(int a)
  {
   int r,s=0;
    while(a!=0)
    {
      r=a%10;
      s=(s*10)+r;
      a=a/10;
    }
    return (s);
  }
  public static void main(String args[])
  {
    int n,t,p;
    Scanner sc=new Scanner(System.in);
    System.out.println("Enter the number to check its a palindrome or not:");
    n=sc.nextInt();
    t=n;
    Palin_pure_func obj=new Palin_pure_func();
    p=obj.f1(n);
    if(t==p)
    {
      System.out.println("Entered number is Palindrome");
    }
    else
        System.out.println("Entered number is not Palindrome");
  }
  }

Output:

Enter the number to check its a palindrome or not:
121

Entered number is Palindrome

Enter the number to check its a palindrome or not:
12211

Entered number is not Palindrome