ListManipulationBasics_Lists_Lab

package feb19_Lists_Lab;

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

public class ListManipulationBasics {
    public static void main(String[] args) {
        @SuppressWarnings("resource")

        Scanner sc = new Scanner(System.in);

        List<Integer> input = Arrays.stream(sc.nextLine().split("\\s+")).map(Integer::parseInt)
                .collect(Collectors.toList());

        String command = "";

        while (!"end".equals(command = sc.nextLine())) {
            String[] toDo = command.split("\\s+");
            String operation = toDo[0];
            int value = Integer.parseInt(toDo[1]);

            switch (operation) {
            case "Add":
                input.add(value);
                break;
            case "Remove":
                input.remove(Integer.valueOf(value));
                break;
            case "RemoveAt":
                input.remove(value);
                break;
            case "Insert":
                int index = Integer.parseInt(toDo[2]);
                input.add(index, value);
                break;
            }
        }

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