View difference between Paste ID: L2Q7PjFC and YXyyZxvi

 import java.util.Arrays;
 import java.util.List;
 import java.util.Scanner;
 import java.util.stream.Collectors;
 
 public class cardGame {
     public static void main(String[] args) {
         Scanner scanner = new Scanner(System.in);
         List<Integer> firstCards = Arrays.stream(scanner.nextLine().split(" "))
                 .map(Integer::parseInt)
                 .collect(Collectors.toList());
         List<Integer> secondCards = Arrays.stream(scanner.nextLine().split(" "))
                 .map(Integer::parseInt)
                 .collect(Collectors.toList());
         int sum = 0;
 
         while (!(firstCards.isEmpty() || secondCards.isEmpty())) {
             if (firstCards.get(0) == secondCards.get(0)) {
                 firstCards.remove(0);
                 secondCards.remove(0);
             } else if (firstCards.get(0) > secondCards.get(0)) {
                 firstCards.add(firstCards.get(0));
                 firstCards.add(secondCards.get(0));
                 firstCards.remove(0);
                 secondCards.remove(0);
             } else if (secondCards.get(0) > firstCards.get(0)) {
                 secondCards.add(secondCards.get(0));
                 secondCards.add(firstCards.get(0));
                 secondCards.remove(0);
                 firstCards.remove(0);
             }
         }
         if (firstCards.isEmpty()) {
             for (int i = 0; i < secondCards.size(); i++) {
                 sum += secondCards.get(i);
             }
             System.out.printf("Second player wins! Sum: %d", sum);
         } else {
             for (int i = 0; i < firstCards.size(); i++) {
                 sum += firstCards.get(i);
             }
             System.out.printf("First player wins! Sum: %d", sum);
 
         }
     }
 }