List_Manipulator_New

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;

public class List_Operations {

    public static void main(String[] args) throws IOException {

        BufferedReader reader =
                new BufferedReader(
                        new InputStreamReader(System.in));

        System.out.println("Enter some numbers ");

        List<String> numbers = Arrays.stream(reader.readLine().split("\\s+"))
                .collect(Collectors.toList());

        System.out.println("Enter command");
        String input = " ";

        while (!"end".equals(input = reader.readLine())) {
            String[] data = input.split("\\s+");
            String command = data[0];

            switch (command) {

                case "Add":
                    numbers.add(data[1]);

                    break;

                case "Insert":
                    int index = Integer.parseInt(data[1]);
                    if (0 <= index && index < numbers.size()) {
                        numbers.add(index, data[2]);
                    } else {
                        System.out.println("Invalid index");
                    }
                    break;
                case "Delete":
                    if (numbers.contains(data[1])) {
                        numbers = numbers.stream().filter(e -> !e.equals(data[1]))
                                .collect(Collectors.toList());
                    } else {
                        System.out.println("Not suchlike number");
                    }
                    break;
                case "Remove":
                    index = Integer.parseInt(data[1]);

                    if (0 <= index && index < numbers.size()) {

                        numbers.remove(index);
                    } else {
                        System.out.println("Invalid index");
                    }
                    break;
                case "Shift":
                    index = Integer.parseInt(data[2]);

                    if (0 <= index && index < numbers.size()) {
                        if (data[1].equals("left")) {
                            for (int i = 0; i < index % numbers.size(); i++) {
                                numbers.add(numbers.get(0));
                                numbers.remove(0);
                            }

                        } else {
                            for (int i = 0; i < index % numbers.size(); i++) {
                                numbers.add(0, numbers.get(numbers.size() - 1));
                                numbers.remove(numbers.size() - 1);
                            }
                        }

                    } else {
                        System.out.println("Invalid index");
                    }
                    break;
            }


        }

        System.out.println(numbers.toString().replaceAll("[\\[,\\]]", " "));
    }
}