在HiLo猜谜游戏结束时产生新的随机数的问题

Question

我正在用Java创建一个HiLo猜谜游戏。到目前为止，我所拥有的一切都按预期运行，除了在游戏结束时，当我提示用户再次玩游戏时，随机数与前一个游戏保持不变。当用户选择玩新游戏时，我如何使代码产生一个新的随机数？

int answer  = (int)(Math.random() * 100 + 1);
int guess = 0;
int guessCount = 0;
boolean playGame = true;
String restart;
Scanner scan = new Scanner(System.in);

while(playGame == true)
{
while (playGame == true) 
{
System.out.println("Enter a number between 1 and 100: ");
guess = scan.nextInt();
guessCount ++;

System.out.println(answer);

if (guess < 1 || guess > 100) 
{
System.out.println("You have entered an invalid number.");
guessCount --;
} else if (guess == answer) 
{
System.out.println("Correct! Great guess! It took you " + guessCount + " tries!");
break;
} else if (guess > answer) 
{
System.out.println("You've guessed too high! Guess again: ");
} else if (guess < answer)
{
System.out.println("You've guessed too low! Guess again: ");
}
}

System.out.println("Would you like to play again? Y/N");
restart = scan.next();

if (restart.equalsIgnoreCase("Y")) 
{
playGame = true;
} else if(restart.equalsIgnoreCase("N"))
{
System.out.println("Thank you for playing!");
break;
}
}

Answer 1

变量"answer"中的值保持不变，因为变量是对您存储/初始化或分配的内容的引用。它本身并不操纵。在游戏重新启动之前或之后，您必须重写例如answer = (int)(Math.random()*100+1)的代码。

Answer 2

在循环之前初始化answer，它永远不会改变。当用户选择玩新一轮游戏时，您必须为answer指定一个新值。这不是我想写的代码，但它在这里：

if (restart.equalsIgnoreCase("Y")) 
{
answer  = (int)(Math.random() * 100 + 1);
}