Java贪吃蛇中排行榜代码的编写

Java贪吃蛇游戏中的排行榜可以用文件来存储。以下是示例代码：

1. 定义一个Score类，表示每个玩家的得分和姓名：

public class Score implements Comparable<Score> {
    private int score;
    private String name;

    public Score(int score, String name) {
        this.score = score;
        this.name = name;
    }

    public int getScore() {
        return score;
    }

    public String getName() {
        return name;
    }

    @Override
    public int compareTo(Score other) {
        return Integer.compare(other.getScore(), this.score);
    }
}

2. 定义一个ScoreManager类，负责读取和写入排行榜文件：

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

public class ScoreManager {
    private File file;

    public ScoreManager(String fileName) throws IOException {
        file = new File(fileName);
        if (!file.exists()) {
            file.createNewFile();
        }
    }

    public List<Score> getScores() throws IOException {
        List<Score> scores = new ArrayList<>();
        try (BufferedReader reader = new BufferedReader(new FileReader(file))) {
            String line;
            while ((line = reader.readLine()) != null) {
                String[] parts = line.split(",");
                int score = Integer.parseInt(parts[0]);
                String name = parts[1];
                scores.add(new Score(score, name));
            }
        }
        Collections.sort(scores);
        return scores;
    }

    public void addScore(Score score) throws IOException {
        List<Score> scores = getScores();
        scores.add(score);
        Collections.sort(scores);
        try (BufferedWriter writer = new BufferedWriter(new FileWriter(file))) {
            for (Score s : scores) {
                writer.write(s.getScore() + "," + s.getName());
                writer.newLine();
            }
        }
    }
}

3. 在游戏结束时，通过ScoreManager类将玩家得分和姓名写入排行榜文件：

ScoreManager scoreManager = new ScoreManager("scores.txt");
scoreManager.addScore(new Score(score, name));

4. 在游戏菜单中，通过ScoreManager类读取排行榜文件并显示排行榜：

ScoreManager scoreManager = new ScoreManager("scores.txt");
List<Score> scores = scoreManager.getScores();
for (int i = 0; i < scores.size(); i++) {
    System.out.println((i+1) + ". " + scores.get(i).getName() + ": " + scores.get(i).getScore());
}