プログラミング入門1

package j1.review02;

import javax.swing.JOptionPane;

public class Poker {

    public static void main(String[] args) {
        new Poker().start();
    }

    void start() {
        Card[] deck = getDeck();
        Card[] deals = new Card[5];
        for (int i = 0; i < deals.length; i++) {
            deals[i] = deck[i];
        }
        showDeals(deals);


    }

    Card[] getDeck() {
        // 13 * 4枚のカードをそろえる
        Card[] deck = new Card[13 * 4];
        for (int number = 0; number < 13; number++) {
            for (int suite = 0; suite < 4; suite++) {
                Card card = new Card();
                card.suite = suite;
                card.number = number + 1;
                deck[number + suite * 13] = card;
            }
        }
        // シャッフルする
        for (int i = 0; i < deck.length; i++) {
            // 0..51の乱数を生成
            int random = (int) (Math.random() * deck.length);

            // 現在のカードと乱数の位置のカードを入れ替え
            Card card = deck[i];
            deck[i] = deck[random];
            deck[random] = card;
        }
        return deck;
    }

    void showDeals(Card[] deals) {
        String string = "";
        for (int i = 0; i < deals.length; i++) {
            string = string + getPrint(deals[i]) + "\n";
        }
        JOptionPane.showMessageDialog(null, "現在の手札:\n" + string);
    }

    String getPrint(Card card) {
        if (card.suite == 0) {
            return "ハートの" + card.number;
        }
        else if (card.suite == 1) {
            return "クラブの" + card.number;
        }
        else if (card.suite == 2) {
            return "ダイヤの" + card.number;
        }
        else {
            return "スペードの" + card.number;
        }
    }


}

class Card {
    int suite;
    int number;
}