C# Programing Language

Given the code below

1.Change all of the low-level arrays in your program to use the appropriate C# collection class instead. Be sure to implement Deck as a Stack

2. Make sure that you use the correct type-safe generic designations throughout your program.

3.Write code that watches for that incorrect data and throws an appropriate exception if bad data is found.

no lamdas, no delegates, no LINQ, no events

Go Fish

using System; namespace GoFish { public enum Suit { Clubs, Diamonds, Hearts, Spades }; public enum Rank { Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King }; // ----------------------------------------------------------------------------------------------------- public class Card { public Rank Rank { get; private set; } public Suit Suit { get; private set; } public Card(Suit suit, Rank rank) { this.Suit = suit; this.Rank = rank; } public override string ToString() { return ("[" + Rank + " of " + Suit + "]"); } } // ----------------------------------------------------------------------------------------------------- public class Deck { private Card[] cards; private static Random rng = new Random(); public Deck() { Array suits = Enum.GetValues(typeof(Suit)); Array ranks = Enum.GetValues(typeof(Rank)); int size = suits.Length * ranks.Length; cards = new Card[size]; int i = 0; foreach (Suit suit in suits) { foreach (Rank rank in ranks) { Card card = new Card(suit, rank); cards[i++] = card; } } } public int Size() { return cards.Length; } public void Shuffle() { if (Size() == 0) return; // Fisher-Yates Shuffle (modern algorithm) // - http://en.wikipedia.org/wiki/Fisher%E2%80%93Yates_shuffle for (int i = 0; i < Size(); i++) { int j = rng.Next(i, Size()); Card c = cards[i]; cards[i] = cards[j]; cards[j] = c; } } public void Cut() { if (Size() == 0) return; int cutPoint = rng.Next(1, Size()); Card[] newDeck = new Card[Size()]; int i; int j = 0; // Copy the cards at or below the cutpoint into the top of the new deck for (i = cutPoint; i < Size(); i++) { newDeck[j++] = cards[i]; } for (i = 0; i < cutPoint; i++) { newDeck[j++] = cards[i]; } cards = newDeck; } public Card DealCard() { if (Size() == 0) return null; Card card = cards[Size() - 1]; // Deal from bottom of deck (makes Resizing easier) Array.Resize(ref cards, Size() - 1); return card; } public override string ToString() { string s = "["; string comma = ""; foreach (Card c in cards) { s += comma + c.ToString(); comma = ", "; } s += "]"; s += " " + Size() + " cards in deck. "; return s; } } // ----------------------------------------------------------------------------------------------------- public class Hand { private Card[] cards; public Hand() { cards = new Card[0]; // Empty hand } public int Size() { return cards.Length; } public Card[] GetCards() { Card[] cardsCopy = new Card[cards.Length]; Array.Copy(cards, cardsCopy, cards.Length); return cards; } public void AddCard(Card card) { Array.Resize(ref cards, Size() + 1); cards[Size() - 1] = card; } public Card RemoveCard(Card card) { Card[] newCards = new Card[cards.Length - 1]; int i = 0; foreach (Card c in cards) { if (c != card) newCards[i++] = c; } cards = newCards; return card; } public override string ToString() { string s = "["; string comma = ""; foreach (Card c in cards) { s += comma + c.ToString(); comma = ", "; } s += "]"; return s; } } } using System; namespace GoFish { public abstract class Player { public string Name { get; private set; } public Hand Hand { get; private set; } public int Points { get; private set; } public Player(string name) { this.Name = name; this.Hand = new Hand(); } public abstract Player ChoosePlayerToAsk(Player[] players); public abstract Rank ChooseRankToAskFor(); public void AddCardToHand(Card card) { Hand.AddCard(card); } public Card GiveAnyCardOfRank(Rank rank) { foreach (Card c in Hand.GetCards()) { if (c.Rank == rank) { Hand.RemoveCard(c); return c; } } return null; } public bool HasRankInHand(Rank rank) { foreach (Card c in Hand.GetCards()) { if (c.Rank == rank) return true; } return false; } // Returns the rank of the first book found. Returns null if no books are found. public Rank? HasBookInHand() { foreach (Rank rank in Enum.GetValues(typeof(Rank))) { int numSuits = 0; foreach (Card c in Hand.GetCards()) { if (c.Rank == rank) numSuits++; } if (numSuits == Enum.GetValues(typeof(Suit)).Length) return rank; } return null; } public void PlayBook(Rank rank) { int i = 0; foreach (Card c in Hand.GetCards()) { if (c.Rank == rank) { Hand.RemoveCard(c); // Removed card is discarded i++; } } Points++; } public override string ToString() { string s = Name + "'s Hand: "; s += Hand.ToString(); return s; } } //---------------------------------------------------------------- // Randomly selects player-to-ask and rank-to-ask-for public class RandomPlayer : Player { private static Random rng = new Random(); public RandomPlayer(string name) : base(name + "(Rnd)") { } public override Player ChoosePlayerToAsk(Player[] players) { Player candidate = this; while ((candidate == this) || (candidate.Hand.Size() == 0)) candidate = players[rng.Next(players.Length)]; return candidate; } public override Rank ChooseRankToAskFor() { Card[] cards = Hand.GetCards(); int randomIndex = rng.Next(cards.Length); return cards[randomIndex].Rank; } } // Always selects first player and asks for rank of first card in their hand public class LeftSidePlayer : Player { public LeftSidePlayer(string name) : base(name + "(LS)") { } public override Player ChoosePlayerToAsk(Player[] players) { Player player = this; int i = 0; while ((player == this) || (player.Hand.Size() == 0)) player = players[i++]; return player; } public override Rank ChooseRankToAskFor() { Rank rank; Card[] cards = Hand.GetCards(); rank = cards[0].Rank; return rank; } } // Always selects last player and asks for rank of last card in their hand public class RightSidePlayer : Player { public RightSidePlayer(string name) : base(name + "(RS)") { } public override Player ChoosePlayerToAsk(Player[] players) { Player player = this; int i = players.Length; while ((player == this) || (player.Hand.Size() == 0)) player = players[--i]; return player; } public override Rank ChooseRankToAskFor() { Rank rank; Card[] cards = Hand.GetCards(); rank = cards[cards.Length - 1].Rank; return rank; } } // Selects a random player and asks for rank of last card in their hand public class RightSideRandomPlayer : Player { private static Random rng = new Random(); public RightSideRandomPlayer(string name) : base(name + "(RSR)") { } public override Player ChoosePlayerToAsk(Player[] players) { Player candidate = this; while ((candidate == this) || (candidate.Hand.Size() == 0)) candidate = players[rng.Next(players.Length)]; return candidate; } public override Rank ChooseRankToAskFor() { Rank rank; Card[] cards = Hand.GetCards(); rank = cards[cards.Length - 1].Rank; return rank; } } }

using System; namespace GoFish { class GoFishApplication { private static Deck theDeck; private static Player[] players; private static int numTurns = 0; private static int numBooksPlayed = 0; public static void Main() { Console.WriteLine("Go Fish Simulation (Random players)"); Console.WriteLine("==================================="); theDeck = new Deck(); theDeck.Shuffle(); theDeck.Cut(); players = new Player[4]; players[0] = new RandomPlayer("Paul"); players[1] = new RandomPlayer("Tom"); players[2] = new RandomPlayer("Pat"); players[3] = new RandomPlayer("Susan"); for (int i = 0; i < 5; i++) { foreach (Player player in players) player.AddCardToHand(theDeck.DealCard()); } foreach (Player player in players) Console.WriteLine(player); int currentPlayerIndex = 0; Console.WriteLine("It is now " + players[currentPlayerIndex].Name + "'s turn."); while (true) { Player currentPlayer = players[currentPlayerIndex]; Player playerToAsk = currentPlayer.ChoosePlayerToAsk(players); Rank rankToAskFor = currentPlayer.ChooseRankToAskFor(); Console.WriteLine(currentPlayer.Name + " says: " + playerToAsk.Name + "! Give me all of your " + rankToAskFor + "s!"); Card card = playerToAsk.GiveAnyCardOfRank(rankToAskFor); if (card == null) { // playerToAsk doesn't have any cards of that rank. Console.WriteLine(playerToAsk.Name + " says: GO FISH!"); if (theDeck.Size() > 0) { card = theDeck.DealCard(); Console.WriteLine(currentPlayer.Name + " draws a " + card + " from the deck. The deck now has " + theDeck.Size() + " cards remaining."); currentPlayer.AddCardToHand(card); PlayAnyBooks(currentPlayer); if (IsGameOver()) break; Draw5CardsIfHandIsEmpty(currentPlayer); } else { Console.WriteLine("Deck is empty. " + currentPlayer.Name + " cannot draw a card."); } Console.WriteLine(currentPlayer.Name + "'s turn is over. " + currentPlayer.Hand); currentPlayerIndex = NextValidPlayer(currentPlayerIndex); Console.WriteLine(" It is now " + players[currentPlayerIndex].Name + "'s turn."); numTurns++; DisplayScoreboard(); } else { // playerToAsk does have one (or more) cards of that rank. Take all of them. do { Console.WriteLine(currentPlayer.Name + " gets the " + card + " from " + playerToAsk.Name); currentPlayer.AddCardToHand(card); card = playerToAsk.GiveAnyCardOfRank(rankToAskFor); } while (card != null); Draw5CardsIfHandIsEmpty(playerToAsk); PlayAnyBooks(currentPlayer); if (IsGameOver()) break; Draw5CardsIfHandIsEmpty(currentPlayer); if (currentPlayer.Hand.Size() == 0) { Console.WriteLine(currentPlayer.Name + "'s hand is empty. " + currentPlayer.Name + " is finished."); currentPlayerIndex = NextValidPlayer(currentPlayerIndex); Console.WriteLine(" It is now " + players[currentPlayerIndex].Name + "'s turn."); numTurns++; DisplayScoreboard(); } else { Console.WriteLine("It is still " + currentPlayer.Name + "'s turn."); } } } Console.WriteLine(" ============== Game Over! ================= "); DisplayScoreboard(); bool tieGame = false; Player winner = players[0]; for (int i = 1; i < players.Length; i++) { if (players[i].Points > winner.Points) { tieGame = false; winner = players[i]; } else if (players[i].Points == winner.Points) { tieGame = true; } } Console.WriteLine(" After " + numTurns + " turns,"); if (tieGame) Console.WriteLine("It's a tie!"); else Console.WriteLine("The winner is " + winner.Name + " with " + winner.Points + " points!"); } // ===================================================================== private static void DisplayScoreboard() { Console.Write("SCORE: "); foreach (Player player in players) Console.Write(" | " + player.Name + ": " + player.Points); Console.WriteLine(" | [Deck: " + theDeck.Size() + "]"); } private static int NextValidPlayer(int currentPlayerIndex) { int nextPlayerIndex = currentPlayerIndex; do { nextPlayerIndex = (nextPlayerIndex + 1) % players.Length; } while (players[nextPlayerIndex].Hand.Size() == 0); return nextPlayerIndex; } private static void PlayAnyBooks(Player player) { Rank? rank = player.HasBookInHand(); while (rank != null) { Console.WriteLine(">>> " + player.Name.ToUpper() + " HAS A BOOK! PLAYING A BOOK OF " + rank.ToString().ToUpper() + "S!"); player.PlayBook((Rank)rank); numBooksPlayed++; rank = player.HasBookInHand(); } } private static bool IsGameOver() { return (numBooksPlayed == Enum.GetValues(typeof(Rank)).Length); } private static void Draw5CardsIfHandIsEmpty(Player player) { if (player.Hand.Size() > 0) return; if (theDeck.Size() == 0) return; Console.WriteLine(">>>> " + player.Name + "'s hand is empty. Drawing up to 5 cards from the deck. <<<<"); for (int i = 0; i < 5; i++) { Card card = theDeck.DealCard(); if (card == null) break; player.Hand.AddCard(card); } } } }