问题

以下是您要求翻译的内容：

我只是在寻求帮助，因为我似乎无法弄清楚为什么我的程序打印出零，而不是所请求的内容。

使用Eclipse，我正在读取一个包含整数的文本文件到一个数组中，然后按升序输出其整数，数组中所有整数的乘积，以及数组的最小值和最大值。数组的打印以及排序都正常。我还在本帖的末尾附上了运行程序时输出的照片，以供澄清。非常感谢任何帮助 这也是我在这个论坛上的第一篇帖子，所以我会感谢任何关于如何正确发布的帮助。谢谢，大家。

import java.io.File;
import java.math.BigInteger;
import java.util.Arrays;
import java.util.Scanner;

public class Project1 {
    public static void main(String[] args) throws Exception {
        int i = 0, j;
        int[] numbers = new int[20];
        Scanner inputFile = new Scanner(new File("number.txt"));
        BigInteger product = getMultiplication(numbers);
        int minimum = getMinValue(numbers);
        int maximum = getMaxValue(numbers);

        while (inputFile.hasNext()) {
            numbers[i++] = Integer.parseInt(inputFile.nextLine());
        }

        System.out.println("Numbers in ascending order:");
        Arrays.sort(numbers);
        System.out.println("" + Arrays.toString(numbers));
        System.out.println(" ");

        System.out.println("The product of the numbers in the array is: ");
        System.out.println("" + product);

        System.out.println("The minimum value of the array is: ");
        System.out.println("" + minimum);

        System.out.println("The maximum value of the array is: ");
        System.out.println("" + maximum);

        inputFile.close();
    }

    private static int getMaxValue(int[] numbers) {
        int maximum = numbers[0];
        for (int i : numbers) {
            if (maximum < i)
                maximum = i;
        }
        return maximum;
    }

    private static int getMinValue(int[] numbers) {
        int minimum = numbers[0];
        for (int i : numbers) {
            if (minimum > i)
                minimum = i;
        }
        return minimum;
    }

    private static BigInteger getMultiplication(int[] numbers) {
        BigInteger j = new BigInteger("1");
        for (int i : numbers) {
            j = j.multiply(BigInteger.valueOf(i));
        }
        return j;
    }
}

程序输出见链接：
program output

import java.io.File;
import java.math.BigInteger;
import java.util.Arrays;
import java.util.Scanner;//imports scanner class
public class Project1
{
public static void main(String[] args) throws Exception   
{	
int i=0,j;
int[]numbers=new int[20];
Scanner inputFile = new Scanner(new File("number.txt"));
BigInteger product=getMultiplication(numbers);
int minimum=getMinValue(numbers);
int maximum=getMaxValue(numbers);
while(inputFile.hasNext()) 
{
numbers[i++]=Integer.parseInt(inputFile.nextLine());
}
//System.out.println(Arrays.toString(numbers));
System.out.println("Numbers in ascending order:");
Arrays.sort(numbers);
System.out.println(""+Arrays.toString(numbers));
System.out.println(" ");
System.out.println("The product of the numbers in the array is: ");
System.out.println(""+product);
System.out.println("The minimum value of the array is: ");
System.out.println(""+minimum);
System.out.println("The maximum value of the array is: ");
System.out.println(""+maximum);
inputFile.close();
}
private static int getMaxValue(int[] numbers) {
int maximum=numbers[0];
for(int i:numbers)
{
if (maximum<i)
maximum=i;
}
return maximum;
}
private static int getMinValue(int[] numbers) {
int minimum=numbers[0];
for(int i:numbers)
{
if (minimum>i)
minimum=i;
}
return minimum;
}
private static BigInteger getMultiplication(int[] numbers) {
BigInteger j=new BigInteger("1");
for (int i:numbers)
{
j=j.multiply(BigInteger.valueOf(i));
}
return j;
}	
}	

答案1

得分: 1

在输入数字后，将代码更改为以下方式以调用这些方法。

while(inputFile.hasNext()) {
numbers[i++]=Integer.parseInt(inputFile.nextLine());
}

BigInteger product=getMultiplication(numbers);
int minimum=getMinValue(numbers);
int maximum=getMaxValue(numbers);

<details>
<summary>英文:</summary>
You have this:

BigInteger product=getMultiplication(numbers);
int minimum=getMinValue(numbers);
int maximum=getMaxValue(numbers);

while(inputFile.hasNext()) {
numbers[i++]=Integer.parseInt(inputFile.nextLine());
}

Change it to this so you call the methods after you enter the numbers.

while(inputFile.hasNext()) {
numbers[i++]=Integer.parseInt(inputFile.nextLine());
}

BigInteger product=getMultiplication(numbers);
int minimum=getMinValue(numbers);
int maximum=getMaxValue(numbers);