CustomArrayList.cs

using System;
using System.Collections.Generic;
using System.Runtime.Serialization;
using System.Text;

namespace CustomArrayList
{
    class CustomArrayList
    {
        //елементи, брой елементи, капацитет
        private object[] elements;
        private int count;
        private static int CAPACITY = 4;

        public CustomArrayList()
        {
            elements = new object[CAPACITY];
            count = 0;
        }

        public void Add(object item)
        {
            elements[count] = item;
            count++;
        }

        public void Insert(int index, object item)
        {
            elements[index] = item;
            count++;
        }

        public int IndexOf(object item)
        {
            for (int i = 0; i < elements.Length; i++)
            {
                object currentElement = elements[i];
                if (item.Equals(currentElement))
                {
                    return i;
                }
            }

            throw new Exception("Element not found");
        }

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

        public bool Contains(object item)
        {
            for (int i = 0; i < elements.Length; i++)
            {
                object currentElement = elements[i];
                if (item.Equals(currentElement))
                {
                    return true;
                }
            }
            return false;
        }

        public override string ToString()
        {

            return string.Join(", ", elements) + "\nCount: "+ count;
        }
    }
}