C# 동적 배열 사이즈 조절(Array.Resize)

using System;

namespace MultiCampus
{
    class Program
    {
        class MyList<T>
        {
            private T[] array;

            public MyList()
            {
                array = new T[4];
            }

            public T this[int idx]
            {
                get
                {
                    return array[idx];
                }
                set
                {
                    if(idx >= array.Length)
                    {
                        Array.Resize<T>(ref array, idx + 1);
                        Console.WriteLine($"배열 사이즈조정 : {array.Length}");
                    }
                    array[idx] = value;
                }
            }

            public int Length
            {
                get { return array.Length; }
            }
        }
        static void Main(string[] args)
        {
            MyList<string> myList1 = new MyList<string>();
            myList1[0] = "A";
            myList1[1] = "B";
            myList1[2] = "C";
            myList1[3] = "D";
            myList1[4] = "E";

            for( int i = 0; i< myList1.Length; i++)
            {
                Console.WriteLine(myList1[i]);
            }


            MyList<int> myList2 = new MyList<int>();
            myList2[0] = 100;
            myList2[1] = 200;
            myList2[2] = 300;
            myList2[3] = 400;
            myList2[4] = 500;

            for (int i = 0; i < myList2.Length; i++)
            {
                Console.WriteLine(myList2[i]);
            }
        }
    }
}