[황인규] 연료 주입, blackjack (Step1)

README.md

@@ -1 +1,25 @@
-# java-blackjack
+# 연료 주입
+
+## 기능요구사항
+
+- [x] 렌터카는 Sonata 2대, Avante 1대, K5 2대로 총 5대의 차량을 보유하고 있다.
+    - [x] 차량 별 연비 정보를 저장하고 있다.
+        - Sonata : 10km/리터
+        - Avante : 15km/리터
+        - K5 : 13km/리터)
+    - 차량 별 보유 대수를 저장하고 있다.
+- [x] 고객은 여행할 목적지의 대략적인 이동거리를 입력 받는다.
+- [x] 이 이동거리를 활용해 차량 별로 필요한 연료를 주입한다.
+- [x] 차량 별로 주입해야 할 연료량을 확인할 수 있는 보고서를 생성한다.
+- [x] 보고서를 출력한다.
+
+# java-blackjack
+
+- [x] 게임에 참여할 사람의 이름을 입력하세요.
+- [x] 게임이 시작하면 참여한 사람과 딜러는 카드 2개씩을 받는다.
+- [x] 카드 숫자를 기본으로 하며, 예외로 Ace는 1 또는 11로 계산할 수 있으며, King, Queen, Jack은 각각 10으로 계산한다.
+- [x] 게임에 참여한 사람 순서대로 카드를 더 받을지 물어보고 카드를 제공한다. 21점을 넘지 않을 경우 원한다면 얼마든지 카드를 계속 뽑을 수 있다. 단, 여기서 카드의 합은
+  21점을 넘어가지 않는다.
+- [x] 게임에 딜러도 기존에 받았던 카드들의 합이 16점 이하이면 한장의 카드를 더 받아야 한다. 17점 이상이면 추가로 받을 수 없다.
+- [x] 블랙잭 게임은 딜러와 플레이어 중 카드의 합이 21점 또는 21점에 가장 가까운 숫자를 가지는 쪽이 이기는 게임이다.
+- [x] 블랙잭 게임을 완료한 후 각 플레이어별로 승패를 출력한다.

src/main/java/blackjack/Application.java

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+package blackjack;
+
+import blackjack.controller.Controller;
+
+public class Application {
+
+    public static void main(String[] args) {
+        Controller controller = new Controller();
+        controller.run();
+    }
+}

src/main/java/blackjack/controller/Controller.java

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+package blackjack.controller;
+
+import blackjack.domain.Game;
+import blackjack.domain.Winner;
+import blackjack.domain.card.CardDeck;
+import blackjack.domain.player.Player;
+import blackjack.domain.state.Gameable;
+import blackjack.domain.state.State;
+import blackjack.view.InputView;
+import blackjack.view.OutputView;
+
+public class Controller {
+
+    private static final String BLANK = "";
+    private static final String YES_MESSAGE = "y";
+    private static final String NO_MESSAGE = "y";
+
+    private static void initGame(Game game) {
+        OutputView.printStartMessage(game);
+        OutputView.printDealerCard(game.getDealer());
+        OutputView.printPlayerCard(game.getPlayers());
+    }
+
+    public void run() {
+        Game game = new Game(InputView.inputPlayers());
+        initGame(game);
+        playGame(game);
+        finishGame(game);
+    }
+
+    private void playGame(Game game) {
+        game.getPlayers().forEach(this::receive);
+        if (game.giveCardToDealer()) {
+            OutputView.printMessageToGiveCardToDealer();
+        }
+    }
+
+    private void receive(Player player) {
+        Gameable gameable = player.getCards();
+        String yesOrNo = BLANK;
+        do {
+            yesOrNo = InputView.inputYesOrNo(player.getName());
+            if (yesOrNo.equals(YES_MESSAGE)) {
+                gameable.addCard(CardDeck.pop());
+                OutputView.printCurrentCardsState(player.getName(), player.getCards());
+                gameable = gameable.judge();
+            }
+            if (yesOrNo.equals(NO_MESSAGE)) {
+                gameable = new State(gameable.cards(), false);
+            }
+        } while (gameable.isEnd());
+    }
+
+    private void finishGame(Game game) {
+        Winner winner = new Winner(game);
+
+        OutputView.printGameResults(game.getDealer(), game.getPlayers());
+
+        OutputView.printGameWinOrLose(game.getDealer(), winner.calculateDealerGameResult());
+        game.getPlayers().forEach(
+            player -> OutputView.printGameWinOrLose(
+                player, winner.calculatePlayerGameResult(player)
+            )
+        );
+    }
+
+}

src/main/java/blackjack/domain/Game.java

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+package blackjack.domain;
+
+import blackjack.domain.card.CardDeck;
+import blackjack.domain.player.Dealer;
+import blackjack.domain.player.Player;
+import blackjack.domain.state.State;
+import java.util.Collections;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class Game {
+
+    private static final int PASS_CARD_NUMBER = 2;
+    private static final String DEALER_NAME = "딜러";
+    private final static int DEALER_THRESHOLD = 16;
+
+    private final List<Player> players;
+    private final Dealer dealer;
+
+    public Game(Dealer dealer, List<Player> players) {
+        this.players = players;
+        this.dealer = dealer;
+    }
+
+    public Game(List<String> playerNames) {
+        this(new Dealer(DEALER_NAME, handOutCards()), playerNames.stream()
+            .map(Game::createPlayer)
+            .collect(Collectors.toList()));
+    }
+
+    private static Player createPlayer(String name) {
+        return new Player(name, handOutCards());
+    }
+
+    private static State handOutCards() {
+        return new State(CardDeck.pop(PASS_CARD_NUMBER), true);
+    }
+
+    public boolean giveCardToDealer() {
+        if (dealer.getCards().cards().sumScore() <= DEALER_THRESHOLD) {
+            dealer.getCards().addCard(CardDeck.pop());
+            return true;
+        }
+        return false;
+    }
+
+    public int getTotalScoreOfPlayer(Player player) {
+        return player.getCards().cards().sumScore();
+    }
+
+    public List<Integer> getScoresOfPlayers() {
+        return players.stream()
+            .mapToInt(this::getTotalScoreOfPlayer)
+            .boxed().collect(Collectors.toList());
+    }
+
+    public List<Player> getPlayers() {
+        return Collections.unmodifiableList(players);
+    }
+
+    public Dealer getDealer() {
+        return dealer;
+    }
+}

src/main/java/blackjack/domain/Winner.java

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+package blackjack.domain;
+
+import blackjack.domain.player.Player;
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class Winner {
+
+    private final int BLACKJACK = 21;
+    private final int NUMBER_ZERO = 0;
+    private final Game game;
+
+    public Winner(final Game game) {
+        this.game = game;
+    }
+
+    public List<Integer> calculateDealerGameResult() {
+        int dealerScore = game.getDealer().getCards().cards().sumScore();
+        return calculateGameResult(dealerScore);
+    }
+
+    public List<Integer> calculatePlayerGameResult(final Player player) {
+        int playerScore = player.getCards().cards().sumScore();
+        return calculateGameResult(playerScore);
+    }
+
+    private List<Integer> calculateGameResult(final int sourceScore) {
+        List<Integer> targetScores = game.getScoresOfPlayers().stream()
+            .map(this::convertZeroScore)
+            .collect(Collectors.toList());
+        return Arrays.asList(countWin(sourceScore, targetScores),
+            countLose(sourceScore, targetScores));
+    }
+
+    private int convertZeroScore(final int score) {
+        if (score > BLACKJACK) {
+            return NUMBER_ZERO;
+        }
+        return score;
+    }
+
+    private int countWin(final int sourceScore, final List<Integer> targetScores) {
+        if (sourceScore > BLACKJACK) {
+            return 0;
+        }
+        return Long.valueOf(targetScores.stream()
+            .filter(targetScore -> sourceScore > targetScore).count()).intValue();
+    }
+
+    private int countLose(final int sourceScore, final List<Integer> targetScores) {
+        if (sourceScore > BLACKJACK) {
+            return targetScores.size();
+        }
+        return Long.valueOf(targetScores.stream()
+            .filter(targetScore -> sourceScore < targetScore).count()).intValue();
+    }
+}

src/main/java/blackjack/domain/card/Card.java

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+package blackjack.domain.card;
+
+public class Card {
+
+    private final CardNumber cardNumber;
+    private final CardPattern cardPattern;
+
+    public Card(final CardNumber cardNumber, final CardPattern cardPattern) {
+        this.cardNumber = cardNumber;
+        this.cardPattern = cardPattern;
+    }
+
+    @Override
+    public String toString() {
+        return cardNumber.getName() + cardPattern.getName();
+    }
+
+    public CardNumber getCardNumber() {
+        return cardNumber;
+    }
+}

src/main/java/blackjack/domain/card/CardDeck.java

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+package blackjack.domain.card;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+public class CardDeck {
+
+    private static final int FIRST_INDEX = 0;
+    private static List<Card> cards = new ArrayList<>();
+
+    static {
+        Arrays.stream(CardNumber.values()).forEach(
+            cardNumber -> Arrays.stream(CardPattern.values()).forEach(
+                cardPattern -> cards.add(new Card(cardNumber, cardPattern))
+            )
+        );
+        Collections.shuffle(cards);
+    }
+
+    public static Cards pop(final int count) {
+        List<Card> newCards = new ArrayList<>(cards.subList(FIRST_INDEX, count));
+        cards = cards.subList(count, cards.size() - count);
+        return new Cards(newCards);
+    }
+
+    public static Card pop() {
+        return cards.remove(FIRST_INDEX);
+    }
+
+    public static List<Card> getCards() {
+        return Collections.unmodifiableList(cards);
+    }
+}

src/main/java/blackjack/domain/card/CardNumber.java

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+package blackjack.domain.card;
+
+public enum CardNumber {
+    ACE("A", 11),
+    TWO("2", 2),
+    THREE("3", 3),
+    FOUR("4", 4),
+    FIVE("5", 5),
+    SIX("6", 6),
+    SEVEN("7", 7),
+    EIGHT("8", 8),
+    NINE("9", 9),
+    JACK("J", 10),
+    QUEEN("Q", 10),
+    KING("K", 10);
+
+    private final String name;
+    private final int score;
+
+    CardNumber(final String name, final int score) {
+        this.name = name;
+        this.score = score;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public int getScore() {
+        return score;
+    }
+
+}

src/main/java/blackjack/domain/card/CardPattern.java

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+package blackjack.domain.card;
+
+public enum CardPattern {
+    DIAMOND("다이아몬드"),
+    CLOVER("클로버"),
+    HEART("하트"),
+    SPADE("스페이드");
+
+    private final String name;
+
+    CardPattern(final String name) {
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+}

src/main/java/blackjack/domain/card/Cards.java

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+package blackjack.domain.card;
+
+import java.util.ArrayList;
+import java.util.Comparator;
+import java.util.List;
+
+public class Cards {
+
+    private final static int BLACKJACK = 21;
+    private final List<Card> cards;
+
+    public Cards(final List<Card> cards) {
+        this.cards = cards;
+    }
+
+    private static int getScoreToSum(final int score, final int compareScore) {
+        if ((compareScore == CardNumber.ACE.getScore()) && (score + CardNumber.ACE.getScore()
+            > BLACKJACK)) {
+            return 1;
+        }
+        return compareScore;
+    }
+
+    public void add(final Card card) {
+        cards.add(card);
+    }
+
+    public boolean sum() {
+        return sumScore() >= BLACKJACK;
+    }
+
+    public int sumScore() {
+        Comparator<Card> comparator = (a, b) -> b.getCardNumber().getScore() - a.getCardNumber()
+            .getScore();
+
+        List<Card> newCards = new ArrayList<>(cards);
+        newCards.sort(comparator);
+
+        return newCards.stream()
+            .mapToInt(card -> card.getCardNumber().getScore())
+            .reduce(0, (a, b) -> a + getScoreToSum(a, b));
+    }
+
+    public List<Card> getCards() {
+        return cards;
+    }
+}