Created DeckOfCards class, created list of cards, created method for shuffling...

Created DeckOfCards class, created list of cards, created method for shuffling card deck, created method for dealing cards

src/main/java/edu/ntnu/idatt2003/DeckOfCards.java

 package edu.ntnu.idatt2003;
 
+import java.util.Collections;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * En kortstokk bestående av 52 kort.
+ */
 public class DeckOfCards {
+    private final List<PlayingCard> cards = new ArrayList<>();
+
+
+    public DeckOfCards() {
+        char[] suits = { 'S', 'H', 'D', 'C' };
+        for (char suit : suits) {
+            for (int face = 1; face <= 13; face++) {
+                cards.add(new PlayingCard(suit, face));
+            }
+        }
+    }
+
+    /**
+     * Blander kortene i kortstokken.
+     */
+    public void shuffle() {
+        Collections.shuffle(cards);
+    }
+
+    /**
+     * Deler ut en hånd med tilfeldige kort.
+     *
+     * @param n Antall kort som skal deles ut.
+     * @return en samling av PlayingCard, som representerer hånden som ble delt ut.
+     * @throws IllegalArgumentException hvis det ikke er nok kort til å dele ut ønsket antall.
+     */
+    public List<PlayingCard> dealHand(int n) {
+        if (n > cards.size()) {
+            throw new IllegalArgumentException("Not enough cards in the deck to deal the hand.");
+        }
+
+        List<PlayingCard> hand = new ArrayList<>();
+        for (int i = 0; i < n; i++) {
+            hand.add(cards.remove(cards.size() - 1));
+        }
+        return hand;
+    }
+
+    public int cardsLeft() {
+        return cards.size();
+    }
 }
+