ql333333333

import static java.lang.System.out;

public class QueueLab3 {
    public static void main(String[] args) {

        MyQueue q=new MyQueue();
        q.add(1);
        q.add(2);
        q.add(3);
        q.add(4);
        q.add(5);
        q.add(6);


        q.remove();
        q.remove();
        q.remove();
        out.println(q.getSize());


        q.display();

    }


}

class MyQueue
{
    private int list[];
    private int front;
    private int back;
    private int capacity;
    private int size;


    private boolean isFull()
    {
        if (back -1  == front)
            return true;
        else
            return false;


    }

    private void resize()
    {

        int list2[]=new int[list.length*2];
        for(int k=0;k<list.length;k++)
            list2[k]=list[k];
        capacity=list.length*2;
        list=list2;

    }

    public MyQueue() {
        list=new int[4];
        back=0;
        front=0;
        size=0;
        capacity=4;

    }

    public boolean isEmpty()
    {
        return (size==0);
    }

    public void add(int item)
    {
        size++;
        if (back==0) {

            list[0] = item;
            back++;
        }

        else if (back==list.length-1)
        {
            resize();

            list[back]=item;
            back++;
        }
        else {
            list[back] = item;
            back++;
        }
    }

    public int remove()
    {
        if(size-1>=0) {
            size--;
            int temp=back;
            back--;


            return list[temp];

        }
        else
            out.println("The queue is already empty .. i cant remove stuff out of thin air... smh");

        return -999;


    }

    public int peek()
    {
        return list[front];

    }

    public int getSize()
    {


        return back-front;
    }

    public void display()
    {
        if (front== back)
            out.println("dont print out an empty queue.. ITS EMPTY MANN..");
        else
            for (int k=0; k<=back-1;k++)
            {
                out.print(list[k] + "  ");
            }

    }




}