package edu.del;

 import java.util.ArrayList;

 import java.util.Collections;

 import java.util.List;

 import java.util.Scanner;

 class Student implements Comparable<Student>{

     String name;

     int score;

     public Student(String name, int score) {

         this.name = name;

         this.score = score;

     }

     public Student() {

     }

     public String getName() {

         return name;

     }

     public void setName(String name) {

         this.name = name;

     }

     public int getScore() {

         return score;

     }

     public void setScore(int score) {

         this.score = score;

     }

     @Override

     public String toString() {

         return "Student{" +

                 "name='" + name + '\'' +

                 ", score=" + score +

                 '}';

     }

 //    @Override

 //    public int compareTo(Student o) {

 //        //假如result返回1。Collections.sort(List)方法就是升序;

 //        //假如result返回-1。Collections.sort(List)方法就是降序;

 //        int num=new Integer(o.getScore()).compareTo(this.getScore());//这里面是按照降序排列

 //        //int num=new Integer(this.getScore()).compareTo(this.getScore()); //测试升序

 //        return num;

 //

 //    }

     @Override

     public int compareTo(Student o) {

         //这里是按照名字字符属性排序

         int num =o.getName().compareTo(this.getName());

         //int num=this.getName().compareTo(o.getName());

         return num;

     }

 }

 public class sort_class {

     public static void main(String[] args) {

         Scanner scanner =new Scanner(System.in);

         System.out.println("请输入学生数量：");

         int num =scanner.nextInt();

         Student[] student =new Student[num];

         List<Student> list =new ArrayList<>();

         for (int i = 0; i <num ; i++) {

             list.add(new Student(scanner.next(),scanner.nextInt()));

         }

         Collections.sort(list);

         //输出一下看看

         for (int i = 0; i <num ; i++) {

             System.out.print(list.get(i).getName()+" ");

             System.out.println(list.get(i).score);

         }

     }

 }