Java、オンライン試験システムにおける試験用紙生成アルゴリズムを開発

import java.util.ArrayList;
import java.util.List;

public class ExamPaperGenerator {
    private List<Question> questionBank;  // 题库
    private int total;  // 试卷总分
    private int count;  // 题目数量

    public ExamPaperGenerator(List<Question> questionBank, int total, int count) {
        this.questionBank = questionBank;
        this.total = total;
        this.count = count;
    }

    public ExamPaper generatePaper() {
        List<Question> selectedQuestions = new ArrayList<>();

        // 遗传算法选择题目
        for (int i = 0; i < count; i++) {
            Question question = selectQuestion();
            selectedQuestions.add(question);
        }

        return new ExamPaper(selectedQuestions);
    }

    private Question selectQuestion() {
        double[] probabilities = new double[questionBank.size()];

        // 计算题目的适应度概率
        for (int i = 0; i < questionBank.size(); i++) {
            Question question = questionBank.get(i);
            double fitness = calculateFitness(question);
            probabilities[i] = fitness;
        }

        // 轮盘赌法选择题目
        double sum = 0;
        double rand = Math.random();
        for (int i = 0; i < questionBank.size(); i++) {
            sum += probabilities[i];
            if (rand < sum) {
                return questionBank.get(i);
            }
        }

        return null;
    }

    private double calculateFitness(Question question) {
        // 根据题目的难度、类型等因素计算题目的适应度
        // 可以根据具体需求设计适应度函数
        // 返回0到1之间的适应度值
        // 适应度越高，被选择的概率越大
        return 0;
    }
}

class ExamPaper {
    private List<Question> questions;  // 试卷题目

    // 省略构造方法和其他方法

    // 获取试卷总分
    public int getTotalScore() {
        int totalScore = 0;
        for (Question question : questions) {
            totalScore += question.getScore();
        }
        return totalScore;
    }
}

class Question {
    private int id;  // 题目ID
    private String content;  // 题目内容
    private int score;  // 题目分数
    private String type;  // 题目类型

    // 省略构造方法和其他方法
}