4.List Operations

import java.util.*;

public class ListOperations {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
       String [] input = scanner.nextLine().split(" ");
        List<Integer> numbers = new ArrayList<>();
        for (int i = 0;i<input.length;i++){
            numbers.add(Integer.parseInt(input[i]));
        }
        String comanda = scanner.nextLine();
        while (!comanda.equals("End")){
            String []array = comanda.split(" ");
            int element = Integer.parseInt(array[array.length-1]);
            if (comanda.contains("Add")) {
                numbers.add(element);
            }
            else if (comanda.contains("Insert")){
                int index = Integer.parseInt(array[array.length-2]);
                if (element>numbers.size()){
                    System.out.println("Invalid index");

                }
                else {
                    numbers.add(element,index);
                }

            }
            else if (comanda.contains("Remove")){
                if (element>numbers.size()){
                    System.out.println("Invalid index");
                }
                else {
                    numbers.remove(element);
                }

            }
            else if (comanda.contains("Shift left")){
                for (int i = 0; i<element;i++){
                    int a = numbers.get(0);
                    numbers.remove(0);
                    numbers.add(a);
                }
            }
            else {
                for (int z = 0;z<element;z++){
                    int a = numbers.get(numbers.size()-1);
                    numbers.remove(numbers.size()-1);
                    numbers.add(0,element);
                }

            }
            comanda=scanner.nextLine();
        }
        for (int i =0; i<numbers.size();i++){
            System.out.print(numbers.get(i)+ " ");
        }
        //System.out.println(numbers.toString().replaceAll("[\\[,\\]]"," "));
    }
}