按受欢迎程度排列功能

/*
 思路：
 我们使用Java Stream API来对功能进行排序。创建一个功能类，并使用Stream的sorted方法对功能列表进行排序。使用Comparator来比较受欢迎程度，并通过Stream API进行排序和收集。
 */

import java.util.*;
import java.util.stream.Collectors;

class Feature {
    String name;
    int popularity;

    public Feature(String name, int popularity) {
        this.name = name;
        this.popularity = popularity;
    }
}

public class Solution {
    public static List<Feature> sortFeatures(List<Feature> features) {
        return features.stream()
                .sorted((f1, f2) -> Integer.compare(f2.popularity, f1.popularity)) // 降序排列
                .collect(Collectors.toList());
    }

    public static void main(String[] args) {
        List<Feature> features = new ArrayList<>();
        features.add(new Feature("FeatureA", 50));
        features.add(new Feature("FeatureB", 70));
        features.add(new Feature("FeatureC", 30));
        List<Feature> sortedFeatures = sortFeatures(features);
        sortedFeatures.forEach(feature -> System.out.println(feature.name + ": " + feature.popularity));
    }
}