01. Parking Lot

package Lekciq;

import java.util.LinkedHashSet;
import java.util.Scanner;

public class ParkingLot {
    public static void main(String[] args) {
        // Create a HashSet to store car numbers
        LinkedHashSet<String> parkingLot = new LinkedHashSet<>();

        // Scanner to read input
        Scanner scanner = new Scanner(System.in);

        // Read input until "END" is encountered
        while (true) {
            String input = scanner.nextLine();

            // Check if input is "END"
            if (input.equals("END")) {
                break;
            }

            // Split input to get direction and car number
            String[] parts = input.split(", ");
            String direction = parts[0];
            String carNumber = parts[1];

            // Process the input
            if (direction.equals("IN")) {
                parkingLot.add(carNumber);
            } else if (direction.equals("OUT")) {
                parkingLot.remove(carNumber);
            }
        }

        // Check if the parking lot is empty and print the result
        if (parkingLot.isEmpty()) {
            System.out.println("Parking Lot is Empty");
        } else {
            // Print all car numbers in the parking lot
            for (String carNumber : parkingLot) {
                System.out.println(carNumber);
            }
        }
    }
}