Practice›Java Fundamentals›Module 8. Interfaces & Abstract Classes›8.2 Comparable

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8.2 Comparable — highest scorer

Total: 0 / 3 pts

Practice mode — check each part and get hints as you go.

Task

The Student class already implements Comparable by score. Fill in best so that it returns the student with the highest score.

One line is enough — Collections.max uses your compareTo. The program prints Ada(90).

Your solution

import java.util.ArrayList;
import java.util.Collections;

class Student implements Comparable<Student> {
    private String name;
    private int score;

    public Student(String name, int score) {
        this.name = name;
        this.score = score;
    }

    public String getName() {
        return name;
    }

    public int getScore() {
        return score;
    }

    public int compareTo(Student other) {
        return score - other.score;
    }

    public String toString() {
        return name + "(" + score + ")";
    }
}

public class Main {

    public static Student best(ArrayList<Student> list) {
        // return the student with the highest score

    }

    public static void main(String[] args) {
        ArrayList<Student> l = new ArrayList<Student>();
        l.add(new Student("Ada", 90));
        l.add(new Student("Sam", 55));
        l.add(new Student("Bo", 70));
        System.out.println(best(l));
    }
}

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