Add project files.

BlackJ/Deck.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Security.Cryptography.X509Certificates;
+using System.Text;
+using System.Threading.Tasks;
+using BlackJack;
+
+
+namespace BlackJack
+{
+    public enum Suits
+    {
+        Diamonds,
+        Hearts,
+        Spade,
+        Clubs,
+    }
+    public class Deck
+    {
+        public List<Card> Cards = new List<Card>();
+        private readonly Random _rnd = new Random();
+        public Deck()
+        {
+            for (int i = 1; i <= 13; i++) {
+                foreach (Suits suit in Enum.GetValues(typeof(Suits)))
+                {
+                    Card card = new Card(suit, i);
+                    AddCard(card);
+                }
+            }
+
+        }
+
+        public void AddCard(Card card)
+        {
+            Cards.Add(card);
+        }
+
+        public void Shuffle()
+        {
+            int n = Cards.Count;
+            for (int i = 0; i < n; i++)
+            {
+                int j = _rnd.Next(0, n-1); 
+                                          
+                Card temp = Cards[i];
+                Cards[i] = Cards[j];
+                Cards[j] = temp;
+            }
+        }
+
+        public void PrintDeck()
+        {
+            for (int i = 0; i < Cards.Count; i++)
+            {
+                Card card = Cards[i];
+                Console.WriteLine(card.Suit.ToString() + " " + card.Number.ToString());
+            }
+        }
+
+    }
+}