Java, 온라인 시험 시스템용 시험지 채점 및 채점 모듈 개발

public class Question {
    private String question;
    private List<String> options;
    private String answer;
    
    public Question(String question, List<String> options, String answer) {
        this.question = question;
        this.options = options;
        this.answer = answer;
    }
    
    // 省略getter和setter方法
}

public class ExamGrader {
    private List<Question> questions;
    
    public ExamGrader(List<Question> questions) {
        this.questions = questions;
    }
    
    public int gradeExam(List<String> studentAnswers) {
        int score = 0;
        
        for (int i = 0; i < questions.size(); i++) {
            Question question = questions.get(i);
            String studentAnswer = studentAnswers.get(i);
            
            if (studentAnswer.equals(question.getAnswer())) {
                score++;
            }
        }
        
        return score;
    }
}

public class GradingSystem {
    public String getGrade(int score) {
        if (score >= 90) {
            return "A";
        } else if (score >= 80) {
            return "B";
        } else if (score >= 70) {
            return "C";
        } else if (score >= 60) {
            return "D";
        } else {
            return "F";
        }
    }
}

public static void main(String[] args) {
    List<Question> questions = new ArrayList<>();
    questions.add(new Question("题目1", Arrays.asList("选项1", "选项2", "选项3"), "答案1"));
    questions.add(new Question("题目2", Arrays.asList("选项1", "选项2", "选项3"), "答案2"));
    questions.add(new Question("题目3", Arrays.asList("选项1", "选项2", "选项3"), "答案3"));
    
    ExamGrader examGrader = new ExamGrader(questions);
    GradingSystem gradingSystem = new GradingSystem();
    
    List<String> studentAnswers = Arrays.asList("答案1", "答案2", "答案3");
    int score = examGrader.gradeExam(studentAnswers);
    
    String grade = gradingSystem.getGrade(score);
    
    System.out.println("得分：" + score);
    System.out.println("评级：" + grade);
}