import java.util.*;

public class ReverseNumber

{

public static void main(String args[])

{

System.out.print("Enter the number that you want to reverse: ");

Scanner sc = new Scanner(System.in);

int n = sc.nextInt();

int reverse_number = reverseNumber(n);

System.out.println("The reverse of the given number is: "+reverse_number);

}

public static int reverseNumber(int number)

{

boolean isNoNegative = number < 0 ? true : false;

if(isNoNegative)

{

number = number * -1; //makes the number positive if the given number is negative

}

int reverse = 0;

int lastDigit = 0;

while (number >= 1)

{

lastDigit = number % 10; // gives the last digit of the number

reverse = reverse * 10 + lastDigit;

number = number / 10; // removes the last digit of the number

}

//makes the number negative

return isNoNegative == true? reverse*-1 : reverse;

}

}