题解 | #成绩排序#

import java.util.*;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static class Student{
        private  String name;
        private  int score;
        Student(){};
        Student(String name,int score){
            this.name=name;
            this.score=score;
        }
    }
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        List<Student> list =new ArrayList<>();

        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNext()) { // 注意 while 处理多个 case
            int a = in.nextInt();
            int b = in.nextInt();
            for (int i = 0; i < a; i++) {
                String name = in.next();
                int score= in.nextInt();
                list.add(new Student(name,score));
            }
            if (b==0){
                list.sort(new Comparator<Student>() {
                    @Override
                    public int compare(Student o1, Student o2) {
                        return o2.score-o1.score;
                    }
                });
            }else {
                list.sort(new Comparator<Student>() {
                    @Override
                    public int compare(Student o1, Student o2) {
                        return o1.score-o2.score;
                    }
                });
            }
            list.forEach(res-> System.out.println(res.name+" "+res.score));
        }
    }
}