在 Java 中使用 While 循环控制答案

Question

我编写了一个钓鱼游戏模拟器。我想控制答案：如果答案不等于“Y”、“y”、“N”或“n”，再问：Would Like to fish？直到用户按下正确的键。我不知道如何编写此算法的代码以及我应该将该算法放在哪一行。我的代码在这里：

// ------------------ //

进口java.util.Random；导入 java.util.Scanner;

public class钓鱼游戏{

public static void main(String[] args) {
    Random dice = new Random();
    Scanner scanner = new Scanner(System.in);
    int randomGuess;
    String choice = "Y";
    int score = 0;
    int points = 0;
    int counter = 0;

    
    System.out.println("Let's go fishing!!!");
    System.out.println();
    System.out.println("Would you like to fish?");
    System.out.println("Type Y or y for yes");
    System.out.println(" Type N or n for quit");




    while (choice.equalsIgnoreCase("Y")) {




        randomGuess = dice.nextInt(6) + 1;  

        if (randomGuess == 1) {
            System.out.println("You caught an old shoe.");
            points += 1;   // If Random Guess is 1 player takes that message and wins 1 point
        }

        if (randomGuess == 2) {
            System.out.println("You caught a huge fish!");
            points += 100;   // If Random Guess is 2,player takes that message and wins 100 points
        }

        if (randomGuess == 3) {
            System.out.println("You caught a leaf ");
            points += 2;   // If Random Guess is 3,player takes that message and wins 2 points
        }

        if (randomGuess == 4) {
            System.out.println("You caught a small fish ");
            points += 50;    // If Random Guess is 2,player takes that massage and wins 50 points
        }

        if (randomGuess == 5) {
            System.out.println("You caught a rock ");
            points += 3;    // If Random Guess is 2,player takes that massage and wins 3 points
        }

        if (randomGuess == 6) {
            System.out.println("You caught a garbage ");
            points += 0;    // If Random Guess is 2,player takes that massage and can not win any point
        }

        System.out.println("Want to try again? Y/N");
        choice = scanner.nextLine();

        counter++;  // This structure counts repeat of game


    }

    if ((choice.equalsIgnoreCase("N"))) {

        System.out.println("Game Over");
        System.out.println();
        System.out.println("Your final score is: " + (points));

        System.out.println("Your game repeat is:" + counter);
        double avarege = (double) points / counter;   // This lane is for counting the average of points
        System.out.printf("Your Average Point Is: %6.2f\n" , avarege);


        if (avarege >= 20) {
            System.out.println("GREAT JOB");
        } else if (avarege >= 10) {
            System.out.println("That is some fine fishing");
        } else {

            System.out.println("Try again in future!");
        }


        System.out.println("Thanks for playing!");
    }
}

}

Answer 1

解法：

import java.util.Random;
import java.util.Scanner;

public class fishinggame {

    public static void main(String[] args) {
        Random dice = new Random();
        Scanner scanner = new Scanner(System.in);
        int randomGuess;
        String choice = "Y";
        int score = 0;
        int points = 0;
        int counter = 0;

        
        System.out.println("Let's go fishing!!!");
        System.out.println();
        System.out.println("Would you like to fish?");
        System.out.println("Type Y or y for yes");
        System.out.println(" Type N or n for quit");

        choice = scanner.next();
        
        while (!choice.equalsIgnoreCase("Y") && !choice.equalsIgnoreCase("n")) {
            System.out.println("Would you like to fish?");
            System.out.println("Type Y or y for yes");
            System.out.println(" Type N or n for quit");
            choice = scanner.next();
        }


        while (choice.equalsIgnoreCase("Y")) {

            randomGuess = dice.nextInt(6) + 1;  

            if (randomGuess == 1) {
                System.out.println("You caught an old shoe.");
                points += 1;   // If Random Guess is 1 player takes that message and wins 1 point
            }

            if (randomGuess == 2) {
                System.out.println("You caught a huge fish!");
                points += 100;   // If Random Guess is 2,player takes that message and wins 100 points
            }

            if (randomGuess == 3) {
                System.out.println("You caught a leaf ");
                points += 2;   // If Random Guess is 3,player takes that message and wins 2 points
            }

            if (randomGuess == 4) {
                System.out.println("You caught a small fish ");
                points += 50;    // If Random Guess is 2,player takes that massage and wins 50 points
            }

            if (randomGuess == 5) {
                System.out.println("You caught a rock ");
                points += 3;    // If Random Guess is 2,player takes that massage and wins 3 points
            }

            if (randomGuess == 6) {
                System.out.println("You caught a garbage ");
                points += 0;    // If Random Guess is 2,player takes that massage and can not win any point
            }

            System.out.println("Want to try again? Y/N");
            choice = scanner.next();

            counter++;  // This structure counts repeat of game


        }

        if ((choice.equalsIgnoreCase("N"))) {

            System.out.println("Game Over");
            System.out.println();
            System.out.println("Your final score is: " + (points));

            System.out.println("Your game repeat is:" + counter);
            double avarege = (double) points / counter;   // This lane is for counting the average of points
            System.out.printf("Your Average Point Is: %6.2f\n" , avarege);


            if (avarege >= 20) {
                System.out.println("GREAT JOB");
            } else if (avarege >= 10) {
                System.out.println("That is some fine fishing");
            } else {

                System.out.println("Try again in future!");
            }


            System.out.println("Thanks for playing!");
        }
    }
}

结果：

Let's go fishing!!!

Would you like to fish?
Type Y or y for yes
 Type N or n for quit
y
You caught a leaf 
Want to try again? Y/N
y
You caught a rock 
Want to try again? Y/N
y
You caught a small fish 
Want to try again? Y/N
y
You caught a small fish 
Want to try again? Y/N
n
Game Over

Your final score is: 105
Your game repeat is:4
Your Average Point Is:  26,25
GREAT JOB
Thanks for playing!

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