(i\'m pretty new at java) Java program that let\'s you draw cards until the deck
ID: 3665515 • Letter: #
Question
(i'm pretty new at java) Java program that let's you draw cards until the deck is empty aand when you draw a card decide if you want to keep it or not.
I'm trying to make a program to wow my professor but I'm sturggling in making the deck part. Do you guys know how will I go as to make the program let the 2 players draw cards until the deck is empty and let the plyer decide to trash or keep the card he draws and draw another one? (can only do this once)
I tried using constructors and cases for the cards but it's just not working.
(i'm pretty new at java)
Explanation / Answer
public class HighLow { public static void main(String[] args) { System.out.println("This program lets you play the simple card game,"); System.out.println("HighLow. A card is dealt from a deck of cards."); System.out.println("You have to predict whether the next card will be"); System.out.println("higher or lower. Your score in the game is the"); System.out.println("number of correct predictions you make before"); System.out.println("you guess wrong."); System.out.println(); int gamesPlayed = 0; // Number of games user has played. int sumOfScores = 0; // The sum of all the scores from // all the games played. double averageScore; // Average score, computed by dividing // sumOfScores by gamesPlayed. boolean playAgain; // Record user's response when user is // asked whether he wants to play // another game. do { int scoreThisGame; // Score for one game. scoreThisGame = play(); // Play the game and get the score. sumOfScores += scoreThisGame; gamesPlayed++; System.out.print("Play again? "); playAgain = TextIO.getlnBoolean(); } while (playAgain); averageScore = ((double)sumOfScores) / gamesPlayed; System.out.println(); System.out.println("You played " + gamesPlayed + " games."); System.out.printf("Your average score was %1.3f. ", averageScore); } // end main() /** * Lets the user play one game of HighLow, and returns the * user's score in that game. The score is the number of * correct guesses that the user makes. */ private static int play() { Deck deck = new Deck(); // Get a new deck of cards, and // store a reference to it in // the variable, deck. Card currentCard; // The current card, which the user sees. Card nextCard; // The next card in the deck. The user tries // to predict whether this is higher or lower // than the current card. int correctGuesses ; // The number of correct predictions the // user has made. At the end of the game, // this will be the user's score. char guess; // The user's guess. 'H' if the user predicts that // the next card will be higher, 'L' if the user // predicts that it will be lower. deck.shuffle(); // Shuffle the deck into a random order before // starting the game. correctGuesses = 0; currentCard = deck.dealCard(); System.out.println("The first card is the " + currentCard); while (true) { // Loop ends when user's prediction is wrong. /* Get the user's prediction, 'H' or 'L' (or 'h' or 'l'). */ System.out.print("Will the next card be higher (H) or lower (L)? "); do { guess = TextIO.getlnChar(); guess = Character.toUpperCase(guess); if (guess != 'H' && guess != 'L') System.out.print("Please respond with H or L: "); } while (guess != 'H' && guess != 'L'); /* Get the next card and show it to the user. */ nextCard = deck.dealCard(); System.out.println("The next card is " + nextCard); /* Check the user's prediction. */ if (nextCard.getValue() == currentCard.getValue()) { System.out.println("The value is the same as the previous card."); System.out.println("You lose on ties. Sorry!"); break; // End the game. } else if (nextCard.getValue() > currentCard.getValue()) { if (guess == 'H') { System.out.println("Your prediction was correct."); correctGuesses++; } else { System.out.println("Your prediction was incorrect."); break; // End the game. } } else { // nextCard is lower if (guess == 'L') { System.out.println("Your prediction was correct."); correctGuesses++; } else { System.out.println("Your prediction was incorrect."); break; // End the game. } } /* To set up for the next iteration of the loop, the nextCard becomes the currentCard, since the currentCard has to be the card that the user sees, and the nextCard will be set to the next card in the deck after the user makes his prediction. */ currentCard = nextCard; System.out.println(); System.out.println("The card is " + currentCard); } // end of while loop System.out.println(); System.out.println("The game is over."); System.out.println("You made " + correctGuesses + " correct predictions."); System.out.println(); return correctGuesses; } // end play() } // end class HighLow
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