using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication44
{
    class Program
    {
        static void Main(string[] args)
        {
            DynamicArray dynArray = new DynamicArray();
            dynArray.AddToArray(5);
            dynArray.ShowArray();

            dynArray.AddToArray(3);
            dynArray.ShowArray();

            dynArray.PublicArray();
            dynArray.ClearArray();
            dynArray.PublicArray();


        }
    }

    class DynamicArray
    {
        private int count = 0;

        private int[] array = new int[1];

        public void AddToArray(int element)
        {
            if (count < array.Length)
                array[count] = element;
            else
            {
                int[] tempArray = new int[array.Length * 2];
                for (int i = 0; i < array.Length; i++)
                    tempArray[i] = array[i];
                tempArray[count] = element;
                array = tempArray;
            }
            count++;
        }

        public void ShowArray()
        {
            foreach (int item in array)
                Console.WriteLine(item);
            Console.WriteLine();
        }

        public int[] PublicArray()
        {
            int[] arrayCopy = new int[count];
            for (int i = 0; i < count; i++)
            {
                arrayCopy[i] = array[i];
            }
            return arrayCopy;
        }

        public void ClearArray()
        {
            Array.Clear(array, 0, array.Length);
        }
    }
}