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tfylee98tfylee98
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ch14
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Lines changed: 624 additions & 450 deletions

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‎ch14/Card.java‎

Lines changed: 91 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1 +1,91 @@
1-
../ch12/Card.java
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/**
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* A standard playing card.
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*/
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public class Card {
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public static final String[] RANKS = {
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null, "Ace", "2", "3", "4", "5", "6", "7",
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"8", "9", "10", "Jack", "Queen", "King"};
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public static final String[] SUITS = {
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"Clubs", "Diamonds", "Hearts", "Spades"};
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private final int rank;
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private final int suit;
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/**
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* Constructs a card of the given rank and suit.
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*/
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public Card(int rank, int suit) {
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this.rank = rank;
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this.suit = suit;
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}
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/**
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* Returns a negative integer if this card comes before
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* the given card, zero if the two cards are equal, or
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* a positive integer if this card comes after the card.
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*/
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public int compareTo(Card that) {
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if (this.suit < that.suit) {
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return -1;
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}
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if (this.suit > that.suit) {
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return 1;
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}
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//in some games, Aces are ranked higher than Kings
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if (this.rank == 1 && that.rank == 1) {
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return 0;
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} else if (this.rank == 1 && that.rank != 1) {
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return 1;
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} else if (this.rank != 1 && that.rank == 1) {
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return -1;
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}
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if (this.rank < that.rank) {
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return -1;
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}
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if (this.rank > that.rank) {
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return 1;
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}
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return 0;
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}
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/**
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* Returns true if the given card has the same
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* rank AND same suit; otherwise returns false.
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*/
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public boolean equals(Card that) {
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return this.rank == that.rank
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&& this.suit == that.suit;
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}
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/**
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* Gets the card's rank.
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*/
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public int getRank() {
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return this.rank;
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}
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/**
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* Gets the card's suit.
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*/
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public int getSuit() {
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return this.suit;
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}
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/**
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* Returns the card's index in a sorted deck of 52 cards.
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*/
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public int position() {
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return this.suit * 13 + this.rank - 1;
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}
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/**
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* Returns a string representation of the card.
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*/
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public String toString() {
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return RANKS[this.rank] + " of " + SUITS[this.suit];
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}
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}

‎ch14/CardCollection.java‎

Lines changed: 123 additions & 123 deletions
Original file line numberDiff line numberDiff line change
@@ -1,123 +1,123 @@
1-
import java.util.ArrayList;
2-
import java.util.Random;
3-
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/**
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* A collection of playing cards.
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*/
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public class CardCollection {
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private String label;
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private ArrayList<Card> cards;
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/**
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* Constructs an empty collection.
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*/
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public CardCollection(String label) {
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this.label = label;
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this.cards = new ArrayList<Card>();
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}
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/**
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* Returns the label of the card collection.
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*/
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public String getLabel() {
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return label;
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}
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/**
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* Adds the given card to the collection.
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*/
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public void addCard(Card card) {
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cards.add(card);
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}
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/**
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* Removes and returns the card with the given index.
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*/
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public Card popCard(int i) {
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return cards.remove(i);
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}
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/**
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* Removes and returns the last card.
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*/
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public Card popCard() {
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int i = size() - 1;
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return popCard(i);
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}
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/**
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* Returns the number of cards.
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*/
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public int size() {
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return cards.size();
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}
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/**
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* True if the collection is empty, false otherwise.
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*/
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public boolean empty() {
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return cards.size() == 0;
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}
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/**
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* Moves n cards from this collection to the given collection.
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*/
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public void deal(CardCollection that, int n) {
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for (int i = 0; i < n; i++) {
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Card card = popCard();
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that.addCard(card);
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}
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}
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/**
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* Moves all remaining cards to the given collection.
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*/
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public void dealAll(CardCollection that) {
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int n = size();
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deal(that, n);
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}
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/**
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* Returns the card with the given index.
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*/
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public Card getCard(int i) {
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return cards.get(i);
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}
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/**
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* Returns the last card.
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*/
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public Card last() {
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int i = size() - 1;
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return cards.get(i);
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}
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/**
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* Swaps the cards at indexes i and j.
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*/
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public void swapCards(int i, int j) {
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Card temp = cards.get(i);
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cards.set(i, cards.get(j));
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cards.set(j, temp);
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}
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/**
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* Randomly permute the cards.
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*/
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public void shuffle() {
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Random random = new Random();
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for (int i = size() - 1; i > 0; i--) {
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int j = random.nextInt(i);
112-
swapCards(i, j);
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}
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}
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/**
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* Returns a string representation of the card collection.
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*/
119-
public String toString() {
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return label + ": " + cards.toString();
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}
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}
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import java.util.ArrayList;
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import java.util.Random;
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/**
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* A collection of playing cards.
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*/
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public class CardCollection {
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private String label;
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private ArrayList<Card> cards;
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/**
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* Constructs an empty collection.
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*/
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public CardCollection(String label) {
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this.label = label;
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this.cards = new ArrayList<Card>();
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}
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/**
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* Returns the label of the card collection.
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*/
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public String getLabel() {
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return label;
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}
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/**
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* Adds the given card to the collection.
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*/
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public void addCard(Card card) {
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cards.add(card);
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}
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/**
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* Removes and returns the card with the given index.
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*/
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public Card popCard(int i) {
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return cards.remove(i);
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}
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/**
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* Removes and returns the last card.
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*/
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public Card popCard() {
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int i = size() - 1;
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return popCard(i);
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}
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/**
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* Returns the number of cards.
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*/
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public int size() {
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return cards.size();
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}
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/**
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* True if the collection is empty, false otherwise.
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*/
59+
public boolean empty() {
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return cards.size() == 0;
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}
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/**
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* Moves n cards from this collection to the given collection.
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*/
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public void deal(CardCollection that, int n) {
67+
for (int i = 0; i < n; i++) {
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Card card = popCard();
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that.addCard(card);
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}
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}
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/**
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* Moves all remaining cards to the given collection.
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*/
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public void dealAll(CardCollection that) {
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int n = size();
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deal(that, n);
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}
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/**
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* Returns the card with the given index.
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*/
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public Card getCard(int i) {
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return cards.get(i);
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}
87+
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/**
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* Returns the last card.
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*/
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public Card last() {
92+
int i = size() - 1;
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return cards.get(i);
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}
95+
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/**
97+
* Swaps the cards at indexes i and j.
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*/
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public void swapCards(int i, int j) {
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Card temp = cards.get(i);
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cards.set(i, cards.get(j));
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cards.set(j, temp);
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}
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/**
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* Randomly permute the cards.
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*/
108+
public void shuffle() {
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Random random = new Random();
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for (int i = size() - 1; i > 0; i--) {
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int j = random.nextInt(i);
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swapCards(i, j);
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}
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}
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/**
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* Returns a string representation of the card collection.
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*/
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public String toString() {
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return label + ": " + cards.toString();
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}
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}

‎ch14/Deck.java‎

Lines changed: 19 additions & 19 deletions
Original file line numberDiff line numberDiff line change
@@ -1,19 +1,19 @@
1-
/**
2-
* A deck of playing cards.
3-
*/
4-
public class Deck extends CardCollection {
5-
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/**
7-
* Constructs a standard deck of 52 cards.
8-
*/
9-
public Deck(String label) {
10-
super(label);
11-
12-
for (int suit = 0; suit <= 3; suit++) {
13-
for (int rank = 1; rank <= 13; rank++) {
14-
addCard(new Card(rank, suit));
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}
16-
}
17-
}
18-
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}
1+
/**
2+
* A deck of playing cards.
3+
*/
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public class Deck extends CardCollection {
5+
6+
/**
7+
* Constructs a standard deck of 52 cards.
8+
*/
9+
public Deck(String label) {
10+
super(label);
11+
12+
for (int suit = 0; suit <= 3; suit++) {
13+
for (int rank = 1; rank <= 13; rank++) {
14+
addCard(new Card(rank, suit));
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}
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}
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}
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}

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