Pop, Shift and Push off array in C# equivalent of `Javascript` `Array`

ArrayStack.cs

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// 4:01 PM 1/30/2023
// by rajib chy

using System;
using System.Collections.Generic;

namespace Sow.Framework {
    class ArrayStack<T> {
        List<T> _list;
        public int Count => _list.Count;
        public T this[ int index ] {
            get {
                int count = _list.Count;
                if ( ( uint )index >= ( uint )count ) {
                    throw new ArgumentOutOfRangeException( nameof( index ), "Index was out of range. Must be non-negative and less than the size of the collection" );
                }
                return _list[ index ];
            }
            set {
                int count = _list.Count;
                if ( ( uint )index >= ( uint )count ) {
                    throw new ArgumentOutOfRangeException( nameof( index ), "Index was out of range. Must be non-negative and less than the size of the collection" );
                }
                _list[ index ] = value;
            }
        }
        public ArrayStack( ) {
            _list = new List<T>( );
        }
        public void Push( T item ) {
            _list.Add( item );
        }
        public T Shift( ) {
            if ( _list.Count == 0 ) {
                // no element found
                return default( T );
            }
            T item = _list[ 0 ];
            _list.RemoveAt( 0 );
            return item;
        }
        public T Pop( ) {
            int lastIndex = _list.Count - 1;
            if ( lastIndex < 0 ) {
                // no rest of element
                return default( T );
            }
            T item = _list[ lastIndex ];
            _list.RemoveAt( lastIndex );
            return item;
        }
    }
}

test.cs

// see more https://stackoverflow.com/questions/455237/pop-off-array-in-c-sharp/75277612#75277612
ArrayStack<int> array = new ArrayStack<int>( );
array.Push( 10 ); // add new item
array.Push( 11 ); // add new item
array.Push( 12 ); // add new item
int item = array[ 0 ]; // 10
item = array.Shift( ); // 10; remove and get first item
item = array.Pop( ); // 12; remove and get last item