Easter Gifts

package com.company;


import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String[] input = scanner.nextLine().split(" +");
        List<String> gifts = new ArrayList<>();
        for (int i = 0; i < input.length; i++) {
            gifts.add(input[i]);
        }

        String command = scanner.nextLine();

        while (!command.equals("No Money")) {
            String[] tokens = command.split(" +");

            if (command.contains("OutOfStock")) {
                for (int i = 0; i < gifts.size(); i++) {
                    String currentGift = gifts.get(i);
                    String giftToNone = tokens[1];
                    if (currentGift.equals(giftToNone)) {
                        gifts.set(i,"None");
                    }


                }


            } else if (command.contains("Required")) {
                for (int i = 0; i < gifts.size(); i++) {
                    String currentGift = gifts.get(i);
                    String giftToReplaceWith = tokens[1];
                    int index = Integer.valueOf(tokens[2]);

                    if (index >= 0 && index < gifts.size()) {
                        currentGift = gifts.set(index, giftToReplaceWith);
                    }
                }

            } else if (command.contains("JustInCase")) {//firdt second third   third second first
                for (int i = 0; i < gifts.size(); i++) {
                    String giftToAdd = tokens[1];
                    String currentGift = gifts.get(i);
                    String lastGift = gifts.get(gifts.size() - 1);
                   gifts.remove(lastGift);
                   gifts.add(giftToAdd);



                }
            }
            command = scanner.nextLine();
        }

        for (int i = 0; i < gifts.size(); i++) {
            String currentGift=gifts.get(i);
            if(!currentGift.equals("None")){
                System.out.print(gifts.get(i)+" ");
            }
        }

    }


}