QueueArrayList

import java.util.*;

public class Queue<T>
{
    private ArrayList<T> store;

    public Queue()
    {
        store = new ArrayList<>();
    }

    public void enqueue(T item) {
        // write your code here
    }

    public T dequeue() {
        // write your code here
        return null;
    }

    public int size() {
        // write your code here
        return 0;
    }

}