{"Card.java":"public class Card\n{\n\t// These constants represent the possible suits and \n\t// can be used to index into the suits array to get\n\t// their string representation.\n private static final int HEARTS = 0;\n private static final int DIAMONDS = 1;\n private static final int SPADES = 2;\n private static final int CLUBS = 3;\n \n // These constants represent the ranks of the non-number\n // cards, or cards above 10. To maintain the ordering after\n // 2-10, the integer values are 11, 12, 13, and 14 and \n // also allow us to index into the ranks array to get their\n // String representation.\n private static final int JACK = 11;\n private static final int QUEEN = 12;\n private static final int KING = 13;\n private static final int ACE = 14;\n\n // Instance variables\n \n // This represents the rank of the card, the value from 2 to Ace.\n private int rank;\n \n // This represents the suit of the card, one of hearts, diamonds, spades or clubs.\n private int suit;\n \n // This represents the value of the card, which is 10 for face cards or 11 for an ace.\n private int value;\n \n // This String array allows us to easily get the String value of a Card from its rank.\n // There are two Xs in the front to provide padding so numbers have their String representation\n // at the corresponding index. For example, the String for 2 is at index 2.\n private String[] ranks = {\"X\", \"X\", \"2\", \"3\", \"4\", \"5\", \"6\", \"7\", \"8\", \"9\", \"10\", \"J\", \"Q\", \"K\", \"A\"};\n \n // The String array allow us to easily get the String value of the Card for its suit. This\n // is the same order as the suits above so we can index into this array.\n private String[] suits = {\"H\", \"D\", \"S\", \"C\"};\n \n /**\n * This is the constructor to create a new Card. To create a new card\n * we pass in its rank and its suit.\n * \n * @param r\tThe rank of the card, as an int.\n * @param s\tThe suit of the card, as an int.\n */\n public Card(int r, int s)\n {\n rank = r;\n suit = s;\n }\n \n // Getter Methods\n \n /**\n * This returns the rank of the card as an integer.\n * \n * @return rank of card as an int.\n */\n public int getRank()\n {\n return rank;\n }\n \n /**\n * This returns the suit of the card as an integer.\n * \n * @return suit of card as an int.\n */\n public int getSuit()\n {\n return suit;\n }\n \n /**\n * This returns the value of the card as an integer.\n * \n * For facecards the value is 10, which is different\n * than their rank underlying value. For aces the default\n * value is 11.\n * \n * @return The value of the card as an int.\n */\n public int getValue()\n {\n int value = rank;\n if(rank > 10)\n {\n value = 10;\n }\n \n if(rank == ACE)\n {\n value = 11;\n }\n \n return value;\n }\n \n /**\n * This utility method converts from a rank integer to a String.\n * \n * @param r\tThe rank.\n * @return\tString version of rank.\n */\n public String rankToString(int r)\n {\n return ranks[r];\n }\n \n /**\n * This utility method converts from a suit integer to a String.\n * \n * @param s\tThe suit.\n * @return\tString version of suit.\n */\n public String suitToString(int s)\n {\n return suits[s];\n }\n \n /**\n * Return the String version of the suit.\n * \n * @return String version of suit.\n */\n public String getSuitAsString()\n {\n return suitToString(suit);\n }\n \n /**\n * Return the String version of the rank.\n * \n * @return String version of the rank.\n */\n public String getRankAsString()\n {\n return rankToString(rank);\n }\n \n /**\n * This returns the String representation of a card which \n * will be two characters. For example, the two of hearts would\n * return 2H. Face cards have a short string so the ace of\n * spades would return AS.\n * \n * @return String representation of Card.\n */\n public String toString()\n {\n // Get a string for rank\n String rankString = ranks[rank];\n \n // Get a string for the suit\n String suitString = suits[suit];\n \n // combine those\n return rankString + suitString;\n }\n\n \n}\n\n","Blackjack.java":"/**\n * This plays the Blackjack card game that we wrote throughout \n * the videos in this lesson.\n * \n * Try to play the game and test it out. As you play it, can you think\n * of ways to improve the game? Can you think of ways to improve the code\n * or organize the code?\n * \n * @author jkeesh\n *\n */\npublic class Blackjack extends ConsoleProgram\n{\n\n private static final int HEARTS = 0;\n private static final int DIAMONDS = 1;\n private static final int SPADES = 2;\n private static final int CLUBS = 3;\n \n private static final int JACK = 11;\n private static final int QUEEN = 12;\n private static final int KING = 13;\n private static final int ACE = 14;\n \n // The starting bankroll for the player.\n private static final int STARTING_BANKROLL = 100;\n \n /**\n * Ask the player for a move, hit or stand.\n * \n * @return A lowercase string of \"hit\" or \"stand\"\n * to indicate the player's move.\n */\n private String getPlayerMove()\n {\n while(true)\n {\n String move = readLine(\"Enter move (hit/stand): \");\n move = move.toLowerCase();\n \n if(move.equals(\"hit\") || move.equals(\"stand\"))\n {\n return move;\n }\n System.out.println(\"Please try again.\"); \n }\n }\n \n /**\n * Play the dealer's turn.\n * \n * The dealer must hit if the value of the hand is less\n * than 17. \n * \n * @param dealer The hand for the dealer.\n * @param deck The deck.\n */\n private void dealerTurn(Hand dealer, Deck deck)\n {\n while(true)\n {\n System.out.println(\"Dealer's hand\");\n System.out.println(dealer);\n \n int value = dealer.getValue();\n System.out.println(\"Dealer's hand has value \" + value);\n \n readLine(\"Enter to continue...\");\n \n if(value < 17)\n {\n System.out.println(\"Dealer hits\");\n Card c = deck.deal();\n dealer.addCard(c);\n \n System.out.println(\"Dealer card was \" + c);\n \n if(dealer.busted())\n {\n System.out.println(\"Dealer busted!\");\n break;\n }\n }\n else\n {\n System.out.println(\"Dealer stands.\");\n break;\n }\n }\n }\n \n /**\n * Play a player turn by asking the player to hit\n * or stand.\n * \n * Return whether or not the player busted.\n */\n private boolean playerTurn(Hand player, Deck deck)\n {\n while(true)\n {\n String move = getPlayerMove();\n \n if(move.equals(\"hit\"))\n {\n Card c = deck.deal();\n System.out.println(\"Your card was: \" + c);\n player.addCard(c);\n System.out.println(\"Player's hand\");\n System.out.println(player);\n \n if(player.busted())\n {\n return true;\n }\n }\n else\n {\n // If we didn't hit, the player chose to \n // stand, which means the turn is over.\n return false;\n }\n \n }\n }\n \n /**\n * Determine if the player wins. \n * \n * If the player busted, they lose. If the player did \n * not bust but the dealer busted, the player wins.\n * \n * Then check the values of the hands.\n * \n * @param player The player hand.\n * @param dealer The dealer hand.\n * @return\n */\n private boolean playerWins(Hand player, Hand dealer)\n {\n if(player.busted())\n {\n return false;\n }\n \n if(dealer.busted())\n {\n return true;\n }\n \n return player.getValue() > dealer.getValue();\n }\n \n /**\n * Check if there was a push, which means the player and\n * dealer tied.\n * \n * @param player The player hand.\n * @param dealer The dealer hand.\n * @return\n */\n private boolean push(Hand player, Hand dealer)\n {\n return player.getValue() == dealer.getValue();\n }\n \n /**\n * Find the winner between the player hand and dealer\n * hand. Return how much was won or lost.\n */\n private double findWinner(Hand dealer, Hand player, int bet)\n {\n if(playerWins(player, dealer))\n {\n System.out.println(\"Player wins!\");\n \n if(player.hasBlackjack())\n {\n return 1.5 * bet;\n }\n \n return bet;\n }\n else if(push(player, dealer))\n {\n System.out.println(\"You push\");\n return 0;\n }\n else\n {\n System.out.println(\"Dealer wins\");\n return -bet;\n }\n }\n \n /**\n * This plays a round of blackjack which includes:\n * - Creating a deck\n * - Creating the hands\n * - Dealing the round\n * - Playing the player turn\n * - Playing the dealer turn\n * - Finding the winner\n * \n * @param bankroll\n * @return The new bankroll for the player.\n */\n private double playRound(double bankroll)\n {\n int bet = readInt(\"What is your bet? \");\n\n Deck deck = new Deck();\n deck.shuffle();\n \n Hand player = new Hand();\n Hand dealer = new Hand();\n \n player.addCard(deck.deal());\n dealer.addCard(deck.deal());\n player.addCard(deck.deal());\n dealer.addCard(deck.deal());\n \n System.out.println(\"Player's Hand\");\n System.out.println(player);\n \n \n System.out.println(\"Dealer's hand\");\n //System.out.println(dealer);\n dealer.printDealerHand();\n \n boolean playerBusted = playerTurn(player, deck);\n \n if(playerBusted)\n {\n System.out.println(\"You busted :(\");\n }\n\n readLine(\"Enter for dealer turn...\");\n dealerTurn(dealer, deck);\n \n double bankrollChange = findWinner(dealer, player, bet);\n \n bankroll += bankrollChange;\n \n System.out.println(\"New bankroll: \" + bankroll);\n \n return bankroll;\n }\n \n /**\n * Play the blackjack game. Initialize the bankroll and keep\n * playing roudns as long as the user wants to.\n */\n public void run()\n {\n double bankroll = STARTING_BANKROLL;\n System.out.println(\"Starting bankroll: \" + bankroll);\n \n while(true)\n {\n bankroll = playRound(bankroll);\n \n String playAgain = readLine(\"Would you like to play again? (Y/N)\");\n if(playAgain.equalsIgnoreCase(\"N\"))\n {\n break;\n }\n }\n \n System.out.println(\"Thanks for playing!\");\n }\n\t\n}\n","Hand.java":"import java.util.*;\n\npublic class Hand \n{\n\n private static final int HEARTS = 0;\n private static final int DIAMONDS = 1;\n private static final int SPADES = 2;\n private static final int CLUBS = 3;\n\n private static final int JACK = 11;\n private static final int QUEEN = 12;\n private static final int KING = 13;\n private static final int ACE = 14;\n\n // This represents the list of cards in the hand.\n private ArrayList cards;\n \n /**\n * This constructor sets up our hand by initializing our\n * ArrayList.\n */\n public Hand()\n {\n cards = new ArrayList();\n }\n \n /**\n * This adds a card to our hand.\n * \n * @param c The card to add to the hand.\n */\n public void addCard(Card c)\n {\n cards.add(c);\n }\n \n /**\n * This returns the value of the hand as an integer.\n * \n * The value of the hand is the sum of the values\n * of the individual cards. There is also an adjustment\n * made for the value of an ace, which can be 11 or 1\n * depending on the situation.\n * \n * @return The value of the hand.\n */\n public int getValue()\n {\n int sum = 0;\n int aceCount = 0;\n \n for(Card c: cards)\n {\n sum += c.getValue();\n \n if(c.getRank() == ACE)\n {\n aceCount++;\n }\n }\n \n while(sum > 21 && aceCount > 0)\n {\n sum -= 10;\n aceCount--;\n }\n \n return sum;\n }\n \n /**\n * Return if this hand has a blackjack.\n * \n * @return If the hand is a blackjack.\n */\n public boolean hasBlackjack()\n {\n return getValue() == 21 && cards.size() == 2;\n }\n \n /**\n * Return if the hand busted, which means has a value\n * greater than 21.\n * \n * @return If the hand busted.\n */\n public boolean busted()\n {\n return getValue() > 21;\n }\n \n /**\n * Return if the hand is a five-card-charlie, which means\n * contained five cards.\n * \n * @return If the hand was a five-card charlie.\n */\n public boolean fiveCardCharlie()\n {\n return cards.size() == 5;\n }\n \n /**\n * Print out a dealer hand, and show an X instead of\n * the first card.\n */\n public void printDealerHand()\n {\n for(int i = 0; i < cards.size(); i++)\n {\n Card c = cards.get(i);\n \n if(i == 0)\n {\n System.out.print(\"X \");\n }\n else\n {\n System.out.print(c + \" \");\n }\n }\n System.out.println();\n }\n \n \n /**\n * Return a String representation of the hand, including showing\n * the value.\n */\n public String toString()\n {\n String result = \"\";\n \n for(Card c: cards)\n {\n result += c + \" \";\n }\n \n result += \"(\" + getValue() + \")\";\n \n return result;\n }\n\n}\n","Deck.java":"import java.util.*;\n\npublic class Deck\n{\n private static final int HEARTS = 0;\n private static final int DIAMONDS = 1;\n private static final int SPADES = 2;\n private static final int CLUBS = 3;\n\n private static final int JACK = 11;\n private static final int QUEEN = 12;\n private static final int KING = 13;\n private static final int ACE = 14;\n \n // Instance variables\n \n // This stores the deck which is a list of the Card objects.\n private ArrayList deck;\n \n /**\n * This creates a Deck. A Deck starts as a list of 52 cards.\n * We loop through each suit and rank and construct a card\n * and add it to the deck.\n */\n public Deck()\n {\n deck = new ArrayList();\n \n for(int rank = 2; rank <= ACE; rank++)\n {\n for(int suit = HEARTS; suit <= CLUBS; suit++)\n {\n Card card = new Card(rank, suit);\n deck.add(card);\n }\n }\n }\n \n // Getter method\n \n /**\n * This getter method returns the ArrayList of cards.\n * @return ArrayList of the Cards.\n */\n public ArrayList getCards()\n {\n return deck;\n }\n \n /**\n * This deals the first Card from the deck by removing it.\n * @return The first Card in the deck.\n */\n public Card deal()\n {\n return deck.remove(0);\n }\n \n /**\n * This prints out the current state of the deck.\n */\n public void print()\n {\n for(Card card: deck)\n {\n System.out.println(card);\n }\n }\n \n /**\n * This shuffles the deck by making 52 swaps of\n * card positions.\n */\n public void shuffle()\n {\n for(int i = 0; i < deck.size(); i++)\n {\n int randomIndex = Randomizer.nextInt(52);\n Card x = deck.get(i);\n Card y = deck.get(randomIndex);\n \n deck.set(i, y);\n deck.set(randomIndex, x);\n }\n }\n\n}\n","Randomizer.java":"import java.util.*;\n\npublic class Randomizer{\n\n\tpublic static Random theInstance = null;\n\t\n\tpublic Randomizer(){\n\t\t\n\t}\n\t\n\tpublic static Random getInstance(){\n\t\tif(theInstance == null){\n\t\t\ttheInstance = new Random();\n\t\t}\n\t\treturn theInstance;\n\t}\n\t\n\t/**\n\t * Return a random boolean value.\n\t * @return True or false value simulating a coin flip.\n\t */\n\tpublic static boolean nextBoolean(){\n\t\treturn Randomizer.getInstance().nextBoolean();\n\t}\n\n\t/**\n\t * This method simulates a weighted coin flip which will return\n\t * true with the probability passed as a parameter.\n\t * \n\t * @param\tprobability\tThe probability that the method returns true, a value between 0 to 1 inclusive. \n\t * @return True or false value simulating a weighted coin flip.\n\t */\n\tpublic static boolean nextBoolean(double probability){\n\t\treturn Randomizer.nextDouble() < probability;\n\t}\n\t\n\t/**\n\t * This method returns a random integer.\n\t * @return A random integer.\n\t */\n\tpublic static int nextInt(){\n\t\treturn Randomizer.getInstance().nextInt();\n\t}\n\n\t/**\n\t * This method returns a random integer between 0 and n, exclusive.\n\t * @param n\tThe maximum value for the range.\n\t * @return A random integer between 0 and n, exclusive.\n\t */\n\tpublic static int nextInt(int n){\n\t\treturn Randomizer.getInstance().nextInt(n);\n\t}\n\n\t/**\n\t * Return a number between min and max, inclusive.\n\t * @param min\tThe minimum integer value of the range, inclusive.\n\t * @param max\tThe maximum integer value in the range, inclusive.\n\t * @return A random integer between min and max.\n\t */\n\tpublic static int nextInt(int min, int max){\n\t\treturn min + Randomizer.nextInt(max - min + 1);\n\t}\n\n\t/**\n\t * Return a random double between 0 and 1.\n\t * @return A random double between 0 and 1.\n\t */\n\tpublic static double nextDouble(){\n\t\treturn Randomizer.getInstance().nextDouble();\n\t}\n\n\t/**\n\t * Return a random double between min and max.\n\t * @param min The minimum double value in the range.\n\t * @param max The maximum double value in the rang.\n\t * @return A random double between min and max.\n\t */\n\tpublic static double nextDouble(double min, double max){\n\t\treturn min + (max - min) * Randomizer.nextDouble();\n\t}\n\n\t\n}\n"}