帮助需要读取数据文件并输出分数的程序

Question

所以我正在研究这个程序（显然是家庭作业）：

在跳水比赛中，每个参赛者的分数是通过去掉最低分和最高分来计算的 然后将剩余的分数相加。编写一个程序，读取提供的数据文件，格式为 如下表所示。对于每个潜水员，使用上述输出潜水员的姓名和总分 评分规则。将每位潜水员的总分格式化为小数点后两位。例如，输出为 下面的陈若琳为：陈若琳 – 56.90 分。

数据文件：

Chen Ruolin          9.2   9.3   9     9.9   9.5   9.5   9.6   9.8     
Emilie Heymans       9.2   9.2   9     9.9   9.5   9.5   9.7   9.6     
Wang Xin             9.2   9.2   9.1   9.9   9.5   9.6   9.4   9.8     
Paola Espinosa       9.2   9.3   9.2   9     9.5   9.3   9.6   9.8     
Tatiana Ortiz        9.2   9.3   9     9.4   9.1   9.5   9.6   9.8     
Melissa Wu           9.2   9.3   9.3   9.7   9.2   9.2   9.6   9.8     
Marie-Eve Marleau    9.2   9.2   9.2   9.9   9.5   9.2   9.3   9.8     
Tonia Couch          9.2   9     9.1   9.5   9.2   9.3   9.4   9.6     
Laura Wilkinson      9.7   9.1   9.3   9.4   9.5   9.4   9.6   9.2

潜水员级别：

import java.util.Vector;

public class Diver
{
private String firstName;
private String lastName;
private Vector scores;

public Diver()
{
    firstName = "";
    lastName = "";
    scores = new Vector();
}

public Diver(String firstName, String lastName, double... scores)
{
    this.firstName = firstName;
    this.lastName = lastName;
    this.scores = new Vector();

    for (double score : scores)
    {
        this.scores.add( score );
    }
}

public String getFirstName()
{
    return firstName;
}

public void setFirstName(String firstName)
{
    this.firstName = firstName;
}

public String getLastName()
{
    return lastName;
}

public void setLastName(String lastName)
{
    this.lastName = lastName;
}



public String toString()
{
    return firstName + " " + lastName + scores.toString();
}
}

潜水员测试计划：

import java.io.*;
import java.util.*;

class TestDiver
{
public static void main(String[] args)
{
    try {
        Scanner scanner = new Scanner(new File("diving_data.txt"));
        scanner.useLocale(Locale.US);

        double[] scores = new double[8];

        while (scanner.hasNext())
        {
            String firstName = scanner.next();
            String lastName  = scanner.next();

            System.out.println("Diver: " + firstName + " " + lastName + " " + scores);

            double min = Double.MIN_VALUE;
            double max = Double.MAX_VALUE;


            for (int i = 0; i < scores.length; i++)
            {
                scores[i] = scanner.nextDouble();
            }

            Diver diver = new Diver(firstName, lastName, scores);
        }
        scanner.close();
    }
    catch (Exception e)
    {
        System.out.println("Problem: " + e.getMessage());
    }
}
}

我是不是程序员，我看着代码就头疼。我的问题是：如何让它正确读取分数。名字输出得很好，但分数基本都是一串乱码。我错过了什么导致这个问题？

任何帮助都会很棒。谢谢。

Answer 1

你正在阅读乐谱，只是没有打印它们。

import java.io.*;
import java.util.*;

class TestDiver
{
    public static void main(String[] args)
    {
        try {
            Scanner scanner = new Scanner(new File("diving_data.txt"));
            scanner.useLocale(Locale.US);

            double[] scores = new double[8];

            while (scanner.hasNext())
            {
                String firstName = scanner.next();
                String lastName  = scanner.next();

                // scores is not defined here yet
                System.out.println("Diver: " + firstName + " " + lastName);

                double min = Double.MIN_VALUE;
                double max = Double.MAX_VALUE;


                for (int i = 0; i < scores.length; i++)
                {
                    scores[i] = scanner.nextDouble();

                    // prints scores
                    System.out.println(" " + scores[i]);
                }

                Diver diver = new Diver(firstName, lastName, scores);
            }
            scanner.close();
        }
        catch (Exception e)
        {
            System.out.println("Problem: " + e.getMessage());
        }
    }
}

您的程序也只是读取文件的第一条记录，我将由您修改此代码以读取所有记录。