"Voina - Number Game"-Set

package com.company;


import java.io.IOException;


import java.time.LocalTime;
import java.time.format.DateTimeFormatter;
import java.util.*;
import java.util.stream.Collectors;

public class Main {


    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        List<Integer> firstPlayerInput = Arrays.stream(scanner.nextLine().split(" "))
                .map(Integer::parseInt)
                .collect(Collectors.toList());

        LinkedHashSet<Integer> firstPlayer = new LinkedHashSet<>();
        firstPlayer.addAll(firstPlayerInput);


        List<Integer> secondPlayerInput = Arrays.stream(scanner.nextLine().split(" "))
                .map(Integer::parseInt)
                .collect(Collectors.toList());

        LinkedHashSet<Integer> secondPlayer = new LinkedHashSet<>();
        secondPlayer.addAll(secondPlayerInput);


        for (int round = 0; round < 50; round++) {
            if (firstPlayer.isEmpty()) {
                System.out.println("Second player win!");
                return;
            } else if (secondPlayer.isEmpty()) {
                System.out.println("First player win!");
                return;
            }

//            Integer firstPlayerCard = getTopValue(firstPlayer);
//            Integer secondPlayerCard = getTopValue(secondPlayer);

            int firstPlayerCard = firstPlayer.iterator().next();
            int secondPlayerCard = secondPlayer.iterator().next();

            firstPlayer.remove(firstPlayerCard);
            secondPlayer.remove(secondPlayerCard);


            if (firstPlayerCard > secondPlayerCard) {
                firstPlayer.add(firstPlayerCard);
                firstPlayer.add(secondPlayerCard);
            } else if (secondPlayerCard > firstPlayerCard) {
                secondPlayer.add(firstPlayerCard);
                secondPlayer.add(secondPlayerCard);
            } else {
                firstPlayer.add(firstPlayerCard);
                secondPlayer.add(secondPlayerCard);
            }
        }
        Integer firstPlayerDeckSize = firstPlayer.size();
        Integer secondPlayerDeckSize = secondPlayer.size();
        if (firstPlayerDeckSize > secondPlayerDeckSize) {
            System.out.println("First player win!");
        } else if (secondPlayerDeckSize > firstPlayerDeckSize) {
            System.out.println("Second player win!");
        } else {
            System.out.println("Draw!");
        }


    }

    private static Integer getTopValue(LinkedHashSet<Integer> set) {
        for (Integer integer : set) {
            return integer;
        }
        return 0;
    }
}