ListManipulationBasics

package Lekcii;

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

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

        List<Integer> numbers = new ArrayList<>();

        String input = scanner.nextLine();
        String[] initialNumbers = input.split(" ");
        for (String num : initialNumbers) {
            numbers.add(Integer.parseInt(num));
        }

        while (true) {
            String command = scanner.nextLine();
            if (command.equals("end")) {
                break;
            }

            String[] tokens = command.split("\\s+");
            String action = tokens[0];
            int number, index;

            switch (action) {
                case "Add":
                    number = Integer.parseInt(tokens[1]);
                    numbers.add(number);
                    break;
                case "Remove":
                    number = Integer.parseInt(tokens[1]);
                    numbers.remove((Integer) number);
                    break;
                case "RemoveAt":
                    index = Integer.parseInt(tokens[1]);
                    numbers.remove(index);
                    break;
                case "Insert":
                    number = Integer.parseInt(tokens[1]);
                    index = Integer.parseInt(tokens[2]);
                    numbers.add(index, number);
                    break;
                default:
                    System.out.println("Invalid command!");
                    break;
            }
        }

        for (Integer num : numbers) {
            System.out.print(num + " ");
        }
    }
}