此时，程序显示两个选项并打印一个声明，指示用户是否赢了，计算机赢了，或者是否是平局。继续播放直到用户选择停止，然后打印用户获胜的数量，损失和关系。
import java.util.Scanner;
import java.util.Random;
public class RockPaperScissor {
public static void main(String[] args) {
final int MAX = 3;
int randomNumber;
int userChoice;
int computerChoice;
int choice;
Scanner input = new Scanner(System.in);
Random rand = new Random();//random number generated by computer
String str, another = "y";
Scanner scan = new Scanner(System.in);
int rounds = 0;
userChoice = 0;
while (another.equalsIgnoreCase("y")) {// allows y or Y
System.out.print("enter 1= rock 2= paper 3 = scissor(0 to quit):");
rounds++;
userChoice = input.nextInt();
computerChoice = rand.nextInt(MAX) + 1;
System.out.println("computer picked " + computerChoice);
int lose = 0;
int win = 0;
int tie = 0;
int computerScore = 0, userScore = 0;
if (userChoice == 1 || userChoice == 2 || userChoice == 3) {
if (userChoice == computerChoice) {
System.out.println("Tie Game!");
System.out.println();
tie++;
//rounds++;
} else if (userChoice == 1) {
if (computerChoice == 2) {
//rock is covered by paper
System.out.println(" you lose");
lose++;
computerScore++;
//rounds++;
} else if (computerChoice == 3) {
//rock smashes scissors
System.out.println(" you win");
win++;
userScore++;
//rounds++;
}
} else if (userChoice == 2) {
if (computerChoice == 3) {
//paper is cut by scissors
System.out.println(" you lose");
lose++;
computerScore++;
//rounds++;
} else if (computerChoice == 1) {
//paper covers rock
System.out.println(" you win");
win++;
userScore++;
//rounds++;
}
} else if (userChoice == 3) {
if (computerChoice == 1) {
//scissors are smashed by rock
System.out.println(" you lose");
lose++;
computerScore++;
//rounds++;
} else if (computerChoice == 2) {
//scissors cut paper
System.out.println(" you win");
win++;
userScore++;
//rounds++;
}
}
} else {
System.out.println("invalid number");
}
System.out.println();
System.out.println("User wins: " + win + " User loses: " + lose + "User ties " + tie);
System.out.print("Do you want to play again (y/n)? ");
another = scan.nextLine();
}
}
}
答案 0 :(得分：1)
你的节目似乎没问题，除了这些要点：
while(true) { /* do stuff */ break; }。scan和input是多余的。您可以使用它们中的任何一个来读取所有用户输入。
Scanner.new(System.in) 答案 1 :(得分：1)
你是没有布尔条件的无限循环
首先声明一个字段布尔标志并将其初始值设置为false然后当你开始游戏然后将标志值设置为true并运行while while untill标志为true当你想要停止然后简单地将flag设置为false
答案 2 :(得分：1)
完成以下代码，
import java.util.Scanner;
import java.util.Random;
公共类RockPaperScissor {
public static void main(String[] args) {
final int MAX = 3;
int randomNumber = 0;
int userChoice = 0;
int computerChoice = 0;
int choice = 0;
int rounds = 0;
int lose = 0;
int win = 0;
int tie = 0;
int computerScore = 0;
int userScore = 0;
Scanner input = new Scanner(System.in);
Random rand = new Random();//random number generated by computer
String str, another = "y";
userChoice = 0;
while (another.equalsIgnoreCase("y")) {// allows y or Y
System.out.print("enter 1= rock 2= paper 3 = scissor(0 to quit):");
rounds++;
userChoice = Integer.parseInt(input.nextLine());
if(userChoice == 0){
System.out.print("Do you want to play again (y/n)? ");
another = input.nextLine();
} else if (userChoice > 0 && userChoice < 4){
computerChoice = rand.nextInt(MAX) + 1;
System.out.println("computer picked " + computerChoice);
if (userChoice == computerChoice) {
System.out.println("Tie Game!");
System.out.println();
tie++;
} else if (userChoice == 1) {
if (computerChoice == 2) {
//rock is covered by paper
System.out.println(" you lose");
lose++;
computerScore++;
} else if (computerChoice == 3) {
//rock smashes scissors
System.out.println(" you win");
win++;
userScore++;
}
} else if (userChoice == 2) {
if (computerChoice == 3) {
//paper is cut by scissors
System.out.println(" you lose");
lose++;
computerScore++;
} else if (computerChoice == 1) {
//paper covers rock
System.out.println(" you win");
win++;
userScore++;
}
} else if (userChoice == 3) {
if (computerChoice == 1) {
//scissors are smashed by rock
System.out.println(" you lose");
lose++;
computerScore++;
} else if (computerChoice == 2) {
//scissors cut paper
System.out.println(" you win");
win++;
userScore++;
}
}
}else{
System.out.println("invalid number");
}
System.out.println("computer score: " + computerScore + " You Score: " + userScore + " Rounds: " + rounds+"\n");
}
}
}
我从原始代码中删除了扫描和一个while循环，并定义了现有条件。
祝你好运!!!