package loopinjava;

import java.util.Scanner;

public class Main13 {

public static void main(String[] args) {

int digit, number, revNumber = 0;

int swappedNumber, temp, firstDigit, lastDigit;

Scanner input = new Scanner(System.in);

System.out.println("Swap first and last digits of a number.\n");

System.out.print("Enter number: ");

number = input.nextInt();

/** Reverse Number */

lastDigit = number % 10;

while (number >= 10) {

digit = (number % 10);

number = (number / 10);

revNumber = (10 * revNumber) + digit;

}

firstDigit = number;

digit = (number % 10);

revNumber = ((10 * revNumber) + digit);

number = revNumber; // Reverse number end

/**

* Again reverse the number but ignore first and last digits

*/

swappedNumber = lastDigit; /// Ignore first digits, it swapped!

number = number / 10;

while (number >= 10) {

digit = (number % 10);

number = number / 10;

swappedNumber = ((10 * swappedNumber) + digit);

}

swappedNumber = ((10 * swappedNumber) + firstDigit); /// Ignore last digits, it swapped!.

System.out.println("Swapped Number: " + swappedNumber);

}

}