Added more lambda functions

src/main/java/no/ntnu/idatt2001/cardgame/CardHand.java

@@ -45,7 +45,7 @@ public class CardHand {
      * @return Arraylist of PlayingCards
      */
     public ArrayList<PlayingCard> getAllWithSuit(String type) {
-        return new ArrayList<PlayingCard>(cards.stream().filter(c -> Character.toString(c.getSuit()).equalsIgnoreCase(type)).collect(Collectors.toList()));
+        return cards.stream().filter(c -> Character.toString(c.getSuit()).equalsIgnoreCase(type)).collect(Collectors.toCollection(ArrayList::new));
     }
 
     /**
@@ -60,7 +60,7 @@ public class CardHand {
      * @return
      */
     public int getCardSum() {
-        return cards.stream().map(c -> c.getFace()).reduce(0, Integer::sum);
+        return cards.stream().map(PlayingCard::getFace).reduce(0, Integer::sum);
     }
 
     /**

src/main/java/no/ntnu/idatt2001/cardgame/DeckOfCards.java

@@ -49,7 +49,7 @@ public class DeckOfCards {
         ArrayList<PlayingCard> cards = new ArrayList<>();
 
         // Pick cards for n or until there are no cards in the deck.
-        IntStream.range(0, n < deck.size() ? n : deck.size()).forEach(i -> {
+        IntStream.range(0, Math.min(n, deck.size())).forEach(i -> {
             PlayingCard card = deck.get(random.nextInt(deck.size()));
             cards.add(card);
             deck.remove(card);