有人可以帮我这个Java代码吗？ 循环错误

Question

I am newish to programming and am trying to make a higher or lower game, but am having a few problems. First, I want the program to loop when the card is guessed right ie the lower option is chosen and it is lower. However it crashes after the second loop and nothing happens. When it is game over, I would and chose to play again, nothing happens. if someone could help me solve these problems it would be much appreciated. Thanks

import

Answer 1

Try this :

public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    int card = 0;
    int cardNext;

    String userResponse;
    String userPlayAgain;
    boolean userGuessedRight = true;

    do {
        do {
            Random randomNumbers = new Random();
            card = randomNumbers.nextInt(13 - 1 + 1) + 1;
            System.out.println("Card is " + card);

            System.out.print("Higher or Lower?");
            cardNext = randomNumbers.nextInt(13) + 1;
            userResponse = scan.next();
            userGuessedRight = (userResponse.equalsIgnoreCase("H") && cardNext >= card)
                    || (userResponse.equalsIgnoreCase("L") && cardNext <= card);

            if (userGuessedRight) {
                System.out.println("Card is " + cardNext);
                System.out.print("Higher or Lower?");
                userResponse = scan.next();
            } else {
                break;
            }
        } while (userResponse.equalsIgnoreCase("H") && cardNext < card || userResponse.equalsIgnoreCase("L") && cardNext > card);
        System.out.println("Card is " + cardNext);
        System.out.println("Card is higher/lower you lose – play again? Y/N : ");
        userPlayAgain = scan.next();
    } while (userPlayAgain.equalsIgnoreCase("Y"));

    do {
        if (userPlayAgain.equalsIgnoreCase("N"))

        {
            System.out.print("Thank You.");
            break;
        }

    } while (!userPlayAgain.equalsIgnoreCase("Y"));

    scan.close();
}

Edit

Here is the output :