Santa's Gifts [Mimi]

import java.util.Arrays;
import java.util.List;
import java.util.Scanner;
import java.util.stream.Collectors;

public class _02_SantasGifts {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = Integer.parseInt(scanner.nextLine());
        List<Integer> numbers = Arrays.stream(scanner.nextLine()
                .split("\\s+"))
                .map(Integer::parseInt)
                .collect(Collectors.toList());

        int current = 0;
        for (int i = 0; i < n; i++) {
            String input = scanner.nextLine();
            String[] command = input.split("\\s+");

            switch (command[0]) {
                case "Forward":
                    int stepsF = Integer.parseInt(command[1]);
                    if (current + stepsF < numbers.size()) {
                        numbers.remove(current + stepsF);
                        current += stepsF;
                    }
                    break;
                case "Back":
                    int stepsB = Integer.parseInt(command[1]);
                    if (current - stepsB >= 0) {
                        numbers.remove(current - stepsB);
                        current -= stepsB;
                    }
                    break;
                case "Gift":
                    if (Integer.parseInt(command[1]) >= 0
                    && Integer.parseInt(command[1]) < numbers.size()) {
                        numbers.add(Integer.parseInt(command[1]), Integer.parseInt(command[2]));
                        current = Integer.parseInt(command[1]);
                    }
                    break;
                case "Swap":

                    int ind1 = numbers.indexOf(Integer.parseInt(command[1]));
                    int ind2 = numbers.indexOf(Integer.parseInt(command[2]));
                    int value1 = Integer.parseInt(command[1]);
                    int value2 = Integer.parseInt(command[2]);
                    if (ind1 != -1 && ind2 != -1) {
                        numbers.set(ind1, value2);
                        numbers.set(ind2, value1);
                    }
                    break;
            }
        }

        System.out.println("Position: " + current);
        StringBuilder output = new StringBuilder();
        for (Integer number : numbers) {
            output.append(number).append(", ");
        }
        System.out.print(output.toString().replaceAll(", $", ""));
    }
}