Check if a number is Palindrome

Given an integer, write a function that returns true if the given number is a palindrome, else false. For example, 12321 is a palindrome, but 1451 is not a palindrome.

Solution 1st: Simplest 
https://ide.geeksforgeeks.org/AJE7SI37TS

import java.lang.*;
import java.io.*;
import java.util.*;

class GFG {
    public static void main (String[] args) {
        int input, output, temp, remainder;
        output=0;
   
        Scanner sc = new Scanner(System.in);
        input = sc.nextInt();
        temp = input;
   
        while(input != 0){
            remainder = input % 10;
            output = (output * 10) + remainder;
            input = input/10;
        }
   
        if(output==temp)
            System.out.println(output+ " is a Palindrome");
        else
            System.out.println(output+ " is not a Palindrome");
    }
}

Solution 2nd: Out of the box
https://ide.geeksforgeeks.org/tVpfTkXbCM


import java.lang.*;
import java.io.*;
import java.util.*;

class GFG {
    public static void main (String[] args) {
        int input;
 
        Scanner sc = new Scanner(System.in);
        input = sc.nextInt();
 
        StringBuilder strInput = new StringBuilder();
        strInput.append(input);
 
        StringBuilder strOut= strInput.reverse();
   
        if(strInput==strOut)
            System.out.println(input+ " is a Palindrome");
        else
            System.out.println(input+ " is not a Palindrome");       
    }
}

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