普及练习场 排序Ex 奖学金

题目链接

题意理解

没什么看不懂的地方吧。。。

代码

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

class Student implements Comparable{
    int chinese;
    int sum;
    int index;

    public Student(int chinese, int math, int english, int index) {
        this.chinese = chinese;
        this.sum = chinese + math + english;
        this.index = index;
    }

    @Override
    public int compareTo(Object o) {
        Student student = (Student)o;
        if(this.sum != student.sum) {
            return this.sum - student.sum;
        } else {
            if(this.chinese != student.chinese) {
                return this.chinese - student.chinese;
            } else {
                return student.index - this.index;
            }
        }
    }
}

public class Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        Student[] students = new Student[n];
        int chinese;
        int math;
        int english;
        for(int i = 0; i < n; i++) {
            chinese = scanner.nextInt();
            math = scanner.nextInt();
            english = scanner.nextInt();
            students[i] = new Student(chinese, math, english, i + 1);
        }
        scanner.close();
        Arrays.sort(students, Collections.reverseOrder());
        for(int i = 0; i < 5; i++) {
            System.out.println(students[i].index + " " + students[i].sum);
        }
    }
}

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