java oop lab test23

abstract class User {
    protected String name;

    public User(final String name) {
        this.name = name;
    }

    public abstract double computeIncome(int mins);
}

class Subscriber extends User {
    private int level;

    public Subscriber(final String name, int level) {
        super(name);
        this.level = level;
    }

    @Override
    public double computeIncome(int mins) {
        return 1.5 * mins * level;
    }

    @Override
    public String toString() {
        return name + "-" + level;
    }
}

class Creator extends User {

    private Subscriber[] subs;
    private int len = 0;

    public Creator(final String name) {
        super(name);
        this.subs = new Subscriber[1];
    }

    public void add(final Subscriber sub) {
        if (len == subs.length) {
            Subscriber[] aux = subs;
            subs = new Subscriber[len * 2];
            for (int i = 0; i < len; i++) {
                subs[i] = aux[i];
            }
        }
        subs[len++] = sub;
    }

    @Override
    public double computeIncome(int mins) {
        double sum = 0;
        for (int i = 0; i < len; i++) {
            sum += subs[i].computeIncome(mins);
        }
        return sum;
    }

    public String toString() {
        String s = name;
        s += " - ";
        for (int i = 0; i < len; i++) {
            s += subs[i];
        }
        return s;
    }
}

class Platform {
    private User[] users;
    private int len = 0;
    private static final int MAX_LEN  = 1000;

    public Platform() {
        users = new User[MAX_LEN];
    }

    public boolean addUser(final User user) {
        if (len == MAX_LEN) {
            return false;
        }
        users[len++] = user;
        return true;
    }

    public User getVIP(int mins) {
        User ans = null;
        double maxi = 0.0;
        for (int i = 0; i < len; i++) {
        double curr = users[i].computeIncome(mins);
        if (maxi < curr) {
            maxi = curr;
            ans = users[i];
        }
        }
        return ans;
    }
}

public class Main {
    public static void main(String[] args) {
        Creator c1 = new Creator("johnc1");
        Creator c2 = new Creator("johnc2");
        Subscriber sub = new Subscriber("john", 1);
        c1.add(sub);
        Platform p = new Platform();
        p.addUser(c1);
        p.addUser(c2);
        p.addUser(sub);
        System.out.println(p.getVIP(30));
    }
}