02. Change List Java Fundamentals

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

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

        String[] inputArr = sc.nextLine().split("\\s+");
        ArrayList<String> numbers= new ArrayList<>();
        for ( String element : inputArr){
            numbers.add(element);
        }
        String input=sc.nextLine();
        while (!input.equals("end")){
            String[] tokens=input.split("\\s+");
            switch (tokens[0]){
                case "Delete":
                    while (numbers.contains(tokens[1])){
                        numbers.remove(tokens[1]);
                    }
                    break;
                case "Insert":
                    String element=tokens[1];
                    int index= Integer.parseInt(tokens[2]);
                    if (index <=numbers.size()){
                    numbers.add(index, element);
                    }
                    break;
            }
            input=sc.nextLine();
        }

        System.out.print(String.join(" ", numbers));

    }
}