//ArrayListDemo.java

import java.util.Scanner;

public class ArrayListDemo
{
    public static void main(String[] args)
    {
        int[] numbers = { 3, 2, 84, 18, 91, 6, 19, 12 };

        // Initialize a new ArrayList and add numbers
        ArrayList myList = new ArrayList();
        for (int number : numbers)
            myList.append(number);

        // Show the array before the operation
        System.out.println("-- Array before operation --");
        myList.printInfo();
        System.out.println();
        myList.print();
        System.out.println();

        // Read an instruction
        Scanner scanner = new Scanner(System.in);
        String instructionLine = scanner.nextLine();
        String[] instruction = instructionLine.split(" ");
        String method = instruction[0];

        int item, index;
        if (method.equals("append"))
        {
            item = Integer.parseInt(instruction[1]);
            myList.append(item);
        }
        else if (method.equals("insertAfter"))
        {
            index = Integer.parseInt(instruction[1]);
            item = Integer.parseInt(instruction[2]);
            myList.insertAfter(index, item);
        }
        else if (method.equals("prepend"))
        {
            item = Integer.parseInt(instruction[1]);
            myList.prepend(item);
        }
        else if (method.equals("removeAt"))
        {
            index = Integer.parseInt(instruction[1]);
            myList.removeAt(index);
        }
        else if (method.equals("search"))
        {
            item = Integer.parseInt(instruction[1]);
            System.out.println("Search result: " + myList.search(item));
        }
        else
        {
            System.out.println("Unknown method: " + method);
        }

        System.out.println();
        System.out.println("-- Array after operation --");
        myList.printInfo();
        System.out.println();
        myList.print();
        System.out.println();
    }
}