2
代碼應該計算一個隨機數，你必須猜出它來做出正確的答案，但是當我試圖測試它時，答案總是1，爲什麼是這樣。 這裏是代碼計算隨機數的代碼只產生1個
public class GuessGame
{
private int target;
private int max;
private int maxGuesses;
/**
Constructs a new game by randomly selecting a target number
between 1 and max_value. Also assigns the maximum number of
guesses by calling the calcGuesses method.
@param max_value the largest possible target number
*/
public GuessGame(int maxValue)
{
//this.max = maxValue* (int)Math.random() + 1;
this.target = (maxValue * (int)Math.random()) + 1;
}
/**
Checks if the provided guess is in the range between 1 and max_value.
@param guess the guess to check
@return returns true if the guess is in the appropriate range
*/
public boolean isValidGuess(int guess)
{
//implementation not shown
if(guess >= 1 && guess <= max)
{
return true;
}
else
{
return false;
}
}
/**
Checks if the provided guess matches the target number.
@param guess the guess to check
@return returns true if the guess matches the target, false otherwise
*/
public boolean isWinner(int guess)
{
//implementation not shown
if(guess == target)
{
return true;
}
else {
return false;
}
}
/**
Checks if the provided guess is too high or too low
Precondition: the guess is not equal to the target.
@param guess the guess to check
@return returns an appropriate message indicating too high or too low
*/
public String determineHighLow(int guess)
{
//implementation not shown
if(guess > target)
{
return "Too HIGH!";
}
else if(guess < target)
{
return "Too LOW!";
}
return "The number you guessed is: " + guess;
}
/**
Calculates the number of guesses to give the player based on the
max_value selected.
@return returns the number of guesses to give the player
*/
public int calcGuesses()
{
maxGuesses = 10 ;
return maxGuesses;
}
/**
Calculates the number of guesses remaining.
@param guesses the number of guesses the player has used so far
@return returns the number of guesses remaining
*/
public int guessesLeft (int guesses)
{
//implementation not shown
maxGuesses = maxGuesses - guesses;
return maxGuesses;
}
}
，這裏是測試儀類
import java.util.Scanner;
public class GuessGameRunner
{
/*
* The GuessGameRunner class is the main class that works as follows.
* The main method prompts the user to enter a maximum value(re-prompting if the user enters a
* number less than 10 or any non-integer),
* then constructs a new GuessGame object with that valid entered value.
* The following is then repeated until the player wins or runs out of guesses:
* player is informed of number of guesses remaining and is prompted to make a guess
* (re-prompting if invalid); the guess is checked for winning—if not a winner,
* the player is told whether the guess is too high or low.
* After the repetition is complete, the appropriate winning or losing message is displayed.
* The winning message should include how many guesses the player took.
*/
public static void main(String[] args)
{
int target;
Scanner goal = new Scanner (System.in);
System.out.println("Guess my number");
target = goal.nextInt() ;
GuessGame targetGuess = new GuessGame(10);
//targetGuess.GuessGame(target);
target = targetGuess.calcGuesses();
System.out.println(targetGuess.calcGuesses());
int bool = goal.nextInt();
while(targetGuess.isWinner(bool)== false && target > 0)
{
System.out.println(targetGuess.isValidGuess(bool));
System.out.println(targetGuess.isWinner(bool));
if (target != bool)
{
System.out.println("guesses left: " + targetGuess.guessesLeft(1));
System.out.println(targetGuess.determineHighLow(bool));
}
bool = goal.nextInt();
}
System.out.println(targetGuess.isValidGuess(bool));
System.out.println(targetGuess.determineHighLow(bool));
System.out.println(targetGuess.isWinner(bool));
}
}
中的Math.random（）時，我乘，加1它似乎並沒有被給我任何隨機數答案總是一個，請幫助！
請寫一個標題來描述你面臨的問題。 – CodingNinja