程序不通过法

Question

我试图基于这些参数编写一个程序：

创建一个名为RandomArray的程序，该程序将生成一个名为numArray的数组，该数组包含10个大于1且小于或等于100的随机整数。程序应该要求用户输入一个大于0小于100的整数。然后程序应该显示数组中大于用户输入的数字的所有数字。

下面是我的代码：

public class RandomArray 
{
    public static void main(String[] args)
    {
        Scanner input = new Scanner(System.in);
        SecureRandom ranNumber = new SecureRandom();
        int NumArray[] = new int[10];

        int userNum;
        int choice;
        int num = 0;

        {
            num = 1+ ranNumber.nextInt(100);
            displayGreaterThan (num);
        }

    }//end of main

    public static void displayGreaterThan(int num)
    {
        int userNum ;
        int numArray[] = new int[10];
        Scanner input = new Scanner(System.in);
        System.out.println("Please enter a number 1 to 100");
        userNum = input.nextInt();
        while ( userNum < 1 || userNum > 100)
        {
            System.out.println("error please try again.");
            System.out.println("Please enter a number 1 to 100");
            userNum = input.nextInt();
        }

        for (int counter = 1; counter <= numArray.length; counter++)
        {
            SecureRandom ranNumber = new SecureRandom();
            num = 1+ ranNumber.nextInt(100);
            if (num > userNum)
            {   numArray[1]++;
                System.out.println( + userNum + " is your random number");
            }
            else
            {
                counter++;
            }
        }
    }
}

我做错了什么，因为这不应该这么难。

Answer 1

我建议将它分解得更多一点，以使每个过程更加简单。您声明了扫描仪两次，一次在主要，这是不必要的。displaygreaterthan过程有很多事情要做，我认为这就是导致一些问题的原因。并不是说这是完美的，但它可以与简化您正在尝试做的事情进行比较。

public class RandomArray 
{
    public static void main(String[] args)
    { 
        int[] intNumArray = new int[11];
        int intUserNumber = 0;

        // Get random numbers
        intNumArray = GenerateRandomNumbers();

        // Get user initial user input
        intUserNumber = GetUserInput(intUserNumber);

        // Validate and recursively call procedure if invalid
        if(intUserNumber < 1 || intUserNumber > 100)
        {
            // Get user input again if invalid
            intUserNumber = GetUserInput(intUserNumber);
        }

        // Display results
        DisplayGreaterThan(intUserNumber, intNumArray);

        // Print array for double checking
        PrintArray(intNumArray);

    }

    public static int[] GenerateRandomNumbers()
    {

        SecureRandom ranNumber = new SecureRandom();
        int[] intNumArray = new int[11];

        for(int intCounter = 0; intCounter < 11; intCounter++)
        {
            intNumArray[intCounter] = ranNumber.nextInt(100);

        }     
        return intNumArray;
    }

    public static int GetUserInput(int intUserNumber)
    {
        Scanner clsScanner = new Scanner(System.in);

        System.out.println("Please enter a number between 1 and 100");
        intUserNumber = clsScanner.nextInt();

        return intUserNumber;

    }

    public static void DisplayGreaterThan(int intUserNumber, int[] intNumArray)
    {
        System.out.println("The array values greater than " + intUserNumber + ":");

        for(int intCounter = 0; intCounter < 11; intCounter++)
        {
            if(intNumArray[intCounter] > intUserNumber)
            {
                System.out.println("#" + intCounter + " = " + intNumArray[intCounter]);
            }
        }
    }

    public static void PrintArray(int[] intNumArray)
    {
        System.out.println("The random array values:");

        for(int intCounter = 0; intCounter < 11; intCounter++)
        {
            System.out.println("#" + intCounter + " = " + intNumArray[intCounter]);
        }
    }
}