java - 用户猜完 6 个随机数后，游戏还剩下 1 个

Question

该程序生成 1 到 49 之间的 6 个随机数，并将它们放入一个数组中 - 这些是中奖号码。让用户猜测其中一个数字，每次猜测时应用程序都应告诉用户该数字是否为中奖号码。

它没有按预期工作，在检查完所有数字后，仍然有一个猜测，即使我检查了所有数字，任何帮助将不胜感激

public class Lotterator {

    public static int[] populate ()
    {
        int[] winNums = new int[6];


        winNums[0] = (int)(Math.random() * 49  + 1);

        while (winNums[1] == winNums[0]){
        winNums[1] = (int)(Math.random() * 49  + 1);
        }

        while (winNums[2] == winNums[1] || winNums[2] == winNums[0]){
        winNums[2] = (int)(Math.random() * 49  + 1);
        }

        while (winNums[3] == winNums[2] || winNums[3] == winNums[1] || winNums[3] == winNums[0]){
        winNums[3] = (int)(Math.random() * 49  + 1);
        }

        while (winNums[4] == winNums[3] || winNums[4] == winNums[2] || winNums[4] == winNums[1] || winNums[4] == winNums[0]){
        winNums[4] = (int)(Math.random() * 49  + 1);
        }

        while (winNums[5] == winNums[4] || winNums[5] == winNums[3]|| winNums[5] == winNums[2]|| winNums[5] == winNums[1]|| winNums[5] == winNums[0]){
        winNums[5] = (int)(Math.random() * 49  + 1);
        }

        return winNums;
    }

    public static boolean[] checkUserNum (int[] winNums, int userNum)
    {
        boolean[] correctNum = new boolean[6];


        for(int c = 0;c < winNums.length; c++)
        {
            switch (c)
            {
            case 0:
                if (winNums[0] == userNum) {
                    correctNum[0] = true;
                }
                break;
            case 1: 
                if (winNums[1] == userNum) {
                    correctNum[1] = true;
                }
                break;
            case 2: 
                if (winNums[2] == userNum) {
                    correctNum[2] = true;
                }
                break;
            case 3: 
                if (winNums[3] == userNum) {
                    correctNum[3] = true;
                }
                break;
            case 4: 
                if (winNums[4] == userNum) {
                    correctNum[4] = true;
                }
                break;
            case 5: 
                if (winNums[5] == userNum) {
                    correctNum[5] = true;
                }
                break;
            }
        }

        if (userNum != winNums[0] && userNum != winNums[1] && userNum != winNums[2] && userNum != winNums[3] && userNum != winNums[4] && userNum != winNums[5])
        {
            TextIO.put("That’s not one of my numbers!");

        }
        else if (userNum == winNums[0] || userNum == winNums[1] || userNum == winNums[2] || userNum == winNums[3] || userNum == winNums[4] || userNum == winNums[5])
        {
            TextIO.put("You got one of my numbers!");

        }


        return correctNum;
    }

    public static int[] removeFromArray(boolean[] correctNum, int[] winNums)
    {

        for (int c = 0; c < winNums.length; c++)
        {
            if (correctNum[c] == true) {
                winNums[c] = 0;
            }

        }

        return winNums;
    }

    public static int getUserNum()
    {
        int userNum = 0;

        TextIO.put("Please input a number from 1 to 49:");
        do {    
        userNum = TextIO.getInt();
        } while(userNum < 1 || userNum > 49);

        return userNum;
    }

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        TextIO.putln("I bet you can’t guess my six numbers!\n");

        int userNum = 0;
        int[] winNums = new int[6];
        boolean[] correctNums = new boolean[6];
        int guesses = 0;
        int correctGuesses = 0;

        winNums = populate();

        do{
        userNum = getUserNum();
        guesses++;
        correctNums = checkUserNum(winNums, userNum);
        winNums = removeFromArray(correctNums, winNums);

        for(int c = 0; c < correctNums.length; c++)
        {
            if (correctNums[c] == true){
                correctGuesses++;
            }   
        }

        TextIO.putln(" You’ve guessed "+ correctGuesses + " out of "+ guesses + " correctly.\n");


        }while (correctGuesses != 6);


}
}

Answer 1

winNums[0] = (int)(Math.random() * 49  + 1);

while (winNums[1] == winNums[0]){
    winNums[1] = (int)(Math.random() * 49  + 1);
}

在您的代码中，您正在 while 循环中检查数字 0 和 1 的相等性。由于设置了数字 0，因此它不相等。您可以在 do-while 循环中切换 while 循环，然后它应该可以工作。当您检查数组时，您会看到数字 1 为零。因此总是剩下 1 个数字。