问剪刀石头布游戏3胜2负
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Stack Overflow用户

提问于 2015-09-15 10:32:00

回答 2查看 7.8K关注 0票数 3

代码如下。我的程序运行得很顺利，除了两个问题。它不会只玩三轮，我需要它只玩三轮，并根据在三轮中至少赢一次的人来确定胜利者，尽管是平局(如果它随机归结到那个场景)。它会一直播放，直到玩家或计算机的中奖比率达到2:1。我不希望它像这样持续运行。另一个问题是，一旦最终获胜者被宣布，“进入石头，布或剪刀”这一行再次出现，那里不需要它。我该如何着手解决这两个问题？谢谢。

import java.util.Scanner;
import java.util.Random;
/**
 * 
 * @author Chloe Harris
 *
 */
public class RockPaperScissorsGame {

    public static void main(String[] args) {
        // TODO code application logic here

        //Prompt user to enter rock, paper, or scissors
        //Compare random value
        while(true){
        int wins = 0;
        int losses = 0;
        int rnd = 0;
        int USER = 0;

        System.out.print("Welcome to Rock Paper Scissors! Best 2 out of 3! \n"
            + "Enter \"Rock\", \"Paper\" or \"Scissors\" \n");


        // Plays 3 rounds before terminating
        while(rnd<3) {

            Random GAME = new Random();
            int PC = 1+GAME.nextInt(3);

            Scanner keyboard = new Scanner (System.in);
            int SCISSOR, ROCK, PAPER;
            ROCK = 1;
            PAPER = 2;
            SCISSOR= 3;

            String USER_Input =  keyboard.next();
            if(USER_Input.equals("Rock"))  {
                   USER = 1;
            }
            if(USER_Input.equals("Paper")) {
                   USER = 2;
            }
            if(USER_Input.equals("Scissors")) {
                   USER = 3;
            }



            //If the user enters a value greater then 3 or less than 1 it will terminate the program
            //and display an error message
            while (USER > 3 || USER < 1) {
                System.err.println("Incorrect value entered.");
                System.exit(0);
                break;
            }

            if(USER == PC){
                if(USER == SCISSOR){
                    System.out.println("Scissors v Scissors! Tie!");

            }
                if(USER == ROCK){
                    System.out.println("Rock v Rock! Tie!");
            }
                if(USER == PAPER){
                    System.out.println("Paper v Paper! Tie!");
            }
                System.out.println("Player has won " + wins + " times and the computer has won " + losses + " times");
                System.out.print("Enter \"Rock\", \"Paper\" or \"Scissors\" \n");
            }
            //Player wins

            if(USER == SCISSOR)
                if(PC == PAPER){
                System.out.println("Scissors v Paper! Player Wins!");
                wins++;
                rnd++;
                System.out.println("Player has won " + wins + " times and the computer has won " + losses + " times");
                System.out.print("Enter \"Rock\", \"Paper\" or \"Scissors\" \n");
            }
            //Computer wins
            else if(PC == ROCK){
                System.out.println("Scissors v Rock! Computer Wins!");
                losses++;
                rnd++;
                System.out.println("Player has won " + wins + " times and the computer has won " + losses + " times");
                System.out.print("Enter \"Rock\", \"Paper\" or \"Scissors\" \n");
            }
            //Player wins

            if(USER == ROCK)
                if(PC == SCISSOR ){
                System.out.println("Rock v Scissor! Player Wins!");
                wins++;
                rnd++;
                System.out.println("Player has won " + wins + " times and the computer has won " + losses + " times");
                System.out.print("Enter \"Rock\", \"Paper\" or \"Scissors\" \n");
            }   
            //Computer wins
            else if (PC == PAPER){
                System.out.println("Rock v Paper! Computer Wins!");
                losses++;
                rnd++;
                System.out.println("Player has won " + wins + " times and the computer has won " + losses + " times");
                System.out.print("Enter \"Rock\", \"Paper\" or \"Scissors\" \n");
            }

            //Player Wins
            if(USER == PAPER)
                if(PC == ROCK){
                System.out.println("Paper v Rock! Player Wins!");
                wins++;
                rnd++;
                System.out.println("Player has won " + wins + " times and the computer has won " + losses + " times");
                System.out.print("Enter \"Rock\", \"Paper\" or \"Scissors\" \n");
                }
            //Computer Wins 
            else if (PC == SCISSOR){
                System.out.println("Paper v Scissors! Computer Wins!");
                losses++;
                rnd++;
                System.out.println("Player has won " + wins + " times and the computer has won " + losses + " times");
                System.out.print("Enter \"Rock\", \"Paper\" or \"Scissors\" \n");
            }

            }

            if(wins>losses){
                System.out.println("The Player Wins!");
            }if(losses>wins){
                System.out.println("The Computer Wins!");
            }
            System.out.println("Play again? \"Yes\" or \"No\"");
            Scanner YN = new Scanner(System.in);

            String YN_String = YN.next();
            if(YN_String.equals("Yes") || YN_String.equals("yes")){
            }if(YN_String.equals("No") || YN_String.equals("no")) {
                System.out.println ("Goodbye!");
                break;
            }

        }
    }

}

java

回答 2

Stack Overflow用户

发布于 2015-09-15 11:37:45

代码看起来应该按照您想要的方式工作，除了在平局的情况下，您不会递增四舍五入计数器：

        if(USER == PC){
            if(USER == SCISSOR){
                System.out.println("Scissors v Scissors! Tie!");
                rnd++;
            }
            if(USER == ROCK){
                System.out.println("Rock v Rock! Tie!");
                rnd++;
            }
            if(USER == PAPER){
                System.out.println("Paper v Paper! Tie!");
                rnd++;
            }
            System.out.println("Player has won " + wins + " times and the computer has won " + losses + " times");
            System.out.print("Enter \"Rock\", \"Paper\" or \"Scissors\" \n");
        }

顺便说一句，您可以从每个单独的结果中取出rnd++;，并在每次从用户获得输入时增加它，因为您希望它无论如何都要增加。

您的第二个问题源于这样一个事实，即在您告诉用户结果(包括结束结果)之后，您每次收到输入时都会提示输入新的输入。您可以通过从各个结果中删除提示命令并将其放在while循环的开头来修复此问题。请注意，如果这样做，您可能还希望从欢迎消息中删除提示，否则它将在开头提示两次:一次是在欢迎消息中，另一次是在while循环之后立即启动时。

票数 2

Stack Overflow用户

发布于 2015-09-16 22:54:34

import java.util.Scanner;
import java.util.Random;
/**
 * 
 * @author Chloe Harris
 *
 */
public class RockPaperScissorsGame {

    public static void main(String[] args) {
        // TODO code application logic here

        //Set integers for wins, losses, rounds, and user
        while(true){
            int wins = 0;
            int losses = 0;
            int round = 0;
            int Player = 0;

            //Plays 3 rounds before terminating
            //Prompt user to input Rock Paper Scissors
            System.out.print("Welcome to Rock Paper Scissors! Best 2 out of 3! \n");

            Scanner keyboard = new Scanner (System.in);
            while(round<3) {
                System.out.println("Enter \"Rock\", \"Paper\" or \"Scissors\"");
                Random Game = new Random();
                int Computer = 1+Game.nextInt(3);

                int Scissors, Rock, Paper;
                Rock = 1;
                Paper = 2;
                Scissors= 3;

                String UserInput =  keyboard.next();
                if(UserInput.equals("Rock"))  {
                    Player = 1;
                }
                if(UserInput.equals("Paper")) {
                    Player = 2;
                }
                if(UserInput.equals("Scissors")) {
                    Player = 3;
                }

                //If the user enters a value greater then 3 (Scissors) or less than 1 (Rock)
                //it will terminate the program and display an error message
                while (Player > 3 || Player < 1) {
                    losses++;
                    round++;
                    System.out.println("Not a valid input! Computer wins");
                    System.out.println("Player has won " + wins + " times and the computer has won " + losses + " times");

                }

                //Establish tie scenarios using if statements
                if(Player == Computer){
                    if(Player == Scissors){
                        System.out.println("Scissors v Scissors! Tie!");
                        round++;
                    }
                    if(Player == Rock){
                        System.out.println("Rock v Rock! Tie!");
                        round++;
                    }
                    if(Player == Paper){
                        System.out.println("Paper v Paper! Tie!");
                        round++;
                    }
                    System.out.println("Player has won " + wins + " times and the computer has won " + losses + " times");

                }

                //Establish the various winning scenarios using if and else if statements
                //Player wins
                if(Player == Scissors)
                    if(Computer == Paper){
                        System.out.println("Scissors v Paper! Player Wins!");
                        wins++;
                        round++;
                        System.out.println("Player has won " + wins + " times and the computer has won " + losses + " times");
                    }
                //Computer wins
                    else if(Computer == Rock){
                        System.out.println("Scissors v Rock! Computer Wins!");
                        losses++;
                        round++;
                        System.out.println("Player has won " + wins + " times and the computer has won " + losses + " times");
                    }
                //Player wins
                if(Player == Rock)
                    if(Computer == Scissors ){
                        System.out.println("Rock v Scissors! Player Wins!");
                        wins++;
                        round++;
                        System.out.println("Player has won " + wins + " times and the computer has won " + losses + " times");
                    }   
                //Computer wins
                    else if (Computer == Paper){
                        System.out.println("Rock v Paper! Computer Wins!");
                        losses++;
                        round++;
                        System.out.println("Player has won " + wins + " times and the computer has won " + losses + " times");
                    }
                //Player Wins
                if(Player == Paper)
                    if(Computer == Rock){
                        System.out.println("Paper v Rock! Player Wins!");
                        wins++;
                        round++;
                        System.out.println("Player has won " + wins + " times and the computer has won " + losses + " times");

                    }
                //Computer Wins 
                    else if (Computer == Scissors){
                        System.out.println("Paper v Scissors! Computer Wins!");
                        losses++;
                        round++;
                        System.out.println("Player has won " + wins + " times and the computer has won " + losses + " times");
                    }
            }

            //Determine final winner using if statements
            //Ask if player would like to play again by setting up string 
            if(wins>losses){
                System.out.println("The Player Wins!");
            }if(losses>wins){
                System.out.println("The Computer Wins!");
            }
            System.out.println("Play again? \"Yes\" or \"No\"");
            Scanner YesNo = new Scanner(System.in);

            String YesNo_String = YesNo.next();
            if(YesNo_String.equalsIgnoreCase("yes"))    {
            }if(YesNo_String.equalsIgnoreCase("No"))    {
                System.out.println ("Goodbye!");
            }
        }
    }
}

票数 0

页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持

原文链接：

https://stackoverflow.com/questions/32576797

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