#pragma once

#include <unordered_set>

class ImplGenerator
{
    public:
    ImplGenerator(int nr_entries);
    bool has_more_numbers();
    int get_next_num();

    private:
    int m_nr_entries;
    int internal_counter = 0;
    std::unordered_set<int> already_generated_numbers;

    virtual int get_next_num_internal() = 0;
};