题解 | #成绩排序#

import java.util.Scanner;
import java.util.Arrays;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        // while (in.hasNextInt()) { // 注意 while 处理多个 case
        //     int a = in.nextInt();
        //     int b = in.nextInt();
        //     System.out.println(a + b);
        // }
        int n = in.nextInt();
        int order = in.nextInt();
        Student.order = order;
        Student[] students = new Student[n];
        for (int i = 0; i < n; i++) {
            String name = in.next();
            int score = in.nextInt();
            Student student = new Student(name, score, i);
            students[i] = student;
        }
        Arrays.sort(students);

        for (int i = 0; i < n; i++) {
            System.out.println(students[i].name + " " + students[i].score);
        }

    }
}

class Student implements Comparable<Student> {
    String name;
    int score;
    int number;
    static int order;

    Student (String name, int score, int number) {
        this.name = name;
        this.score = score;
        this.number = number;
    }
    @Override
    public int compareTo(Student student) {
        if (order == 0) {
            if (this.score - student.score == 0) {
                return this.number - student.number;
            } else {
                return student.score - this.score;
            }
        } else {
            if (this.score - student.score == 0) {
                return this.number - student.number;
            } else {
                return this.score - student.score;
            }
        }
    }
}