ListClass.java

import java.util.*;
public class List {
    private int[] array;
    int items;
    boolean full;
    
    
public List()
{
    array = new int[10];
    for(int i=0; i<10; i++)
        array[i] =0;
    items = 0;
    full = false;
}

public List(int size)
{
    array = new int[size];
    items=0;
    full = false;
}

public List(int[] arr)
{
    array = arr;
    items = arr.length;
    full = true;
}

public int size()
{
    return items;
}

public void print()
{
    for(int i=0; i<10; i++)
    {
        System.out.printf("%3d", array[i]);
    }
}

public void add(int num)
{
    if(full != true)
    {
        for(int i=array.length-1; i>=0; i--)
        {
            array[i] = array[i-1];
        }
    }
    else
    {
        int[] temp = Arrays.copyOf(array, array.length*2);
       
        for(int i=temp.length-1; i>=0; i--)
        {
            temp[i] = temp[i-1];
        }
        array = Arrays.copyOf(temp, temp.length);
        
    }
    items+=1;
    if(items == array.length)
        full = true;
}


public void add(int num, int pos)
{
    if(full != true)
    {
        for(int i=array.length; i>pos; i--)
        {
            array[i]= array[i-1];
            array[pos] = num;
        }
    }
    else
    {
        
      int[] temp = Arrays.copyOf(array, array.length*2);
       
        for(int i=temp.length-1; i>=0; i--)
        {
            temp[i] = temp[i-1];
        }
        array = Arrays.copyOf(array, num);
        
    }
    items+=1;
    if(items == array.length)
        full = true;
}

}}

Test.java

public class AssignTwo {

    public static void main(String[] args) 
    {
        List k = new List();
        
      //  for(int i=0; i<15; i++)
        //{
          //  list.add(7);
        //}
        
        k.print();
        System.out.println(k.size());
    }
}