1.1, 1.2

#include <iostream>
#include <list>
#include <vector>
#include <string>
#include <random>
#include <ctime>
using namespace std;

using _ptr = bool(*)(const char&);

class Book
{
private:
    string first_name_a;
    string second_name_a;
    string titel;
    string publisher;
    int count;
    int year;
    int paper;
    int electronic;
    int audio;

    string names [5] = {"Alice", "Bob", "Carla", "David", "Eva" };
    string surnames[5] = { "Smith", "Johnson", "Brown", "Davis", "Wilson" };
    string publishers[5] = { "Penguin Random House", "HarperCollins", "Simon & Schuster", "Macmillan Publishers", "Hachette Livre" };
    string books[5] = { "To Kill a Mockingbird",    "1984", "The Great Gatsby", "Pride and Prejudice", "The Catcher in the Rye" };

public:

    Book(string const& f = " ", string const& s = " ", string const& t = " ",
        string const& p = " ", int c = 0, int y = 0, int ta = 0, int  tp = 0, int te = 0)
    {
        first_name_a = f;
        second_name_a = s;
        titel = t;
        publisher = p;
        count = c;
        year = y;
        paper = ta;
        electronic = tp;
        audio = te;
    }

    bool operator < (const Book & B) const
    {
        if (count != B.count)
            return (count < B.count);
        else if (year != B.year)
            return (year < B.year);
        else return (titel < B.titel);
    }

    int count_() { return count;}
    int year_() { return year; }
    string titel_() { return titel; }

    void fill()
    {
        srand(time(NULL));

        int i1 = rand() % 5, i2 = rand() % 5, i3 = rand() % 5, i4 = rand() % 5,
            i5 = rand() % 5000, i6 = rand() % 2023, i7 = rand() % 1000, i8 = rand() % 1000, i9 = rand() % 1000;

        first_name_a = names[i1];
        second_name_a = surnames[i2];
        titel = books[i3];
        publisher = publishers[i4];
        count = i5;
        year = i6;
        paper = i7;
        electronic = i8;
        audio = i9;

    }

    void print() const
    {
        cout << "\nName authot: " << first_name_a << "\nSurname author: " << second_name_a <<
            "\nTitel of book: " << titel << "\nCount books: " << count << "\nPublisher: " << publisher <<
            "\nYear of publication: " << year << "\nNumber of paper books: " << paper << "\nNumber of electronic books:" <<
            electronic << "\nNumber of audio books:" << audio << '\n';
    }
};


Book pop(list<Book>& l, list<Book>::iterator it)
{
    l.erase(it);
    return l.back();
}

bool  vowels(char const& c)
{
    return (c == 'A' || c == 'a' ||
            c == 'E' || c == 'e' ||
            c == 'I' || c == 'i' ||
            c == 'O' || c == 'o' ||
            c == 'U' || c == 'u' ||
            c == 'Y' || c == 'y');
}

template<class T>
list<T> filter(list<T>& lst, _ptr comp)
{
    list<T> ans;

    for (auto it = lst.begin(); it != lst.end(); ++it)
    {
        if (comp(*it))
            ans.push_back(*it);
    }

    return ans;
}

template<class T>
void push(list<T>& lst, const T&  element)
{
    auto i = lst.begin();

    for (; i != lst.end(); ++i)
        if (element < *i)
            break;

    lst.insert(i, element);
}

template<class T>
void print(list<T>& const lst)
{
    for (auto i = lst.begin(); i != lst.end(); ++i)
        cout << *i << " ";

    cout << '\n';
}


int main()
{
    /*list<char> lst;
    _ptr ptr = &vowels;

    for (char i = 'A'; i < 'Z'; ++i)
        lst.push_back(i);

    print(lst);
    cout << '\n';

    list<char> lst2 = filter(lst, ptr);

    print(lst2); cout << '\n';

    insertF(lst2, 'A'); print(lst2);*/

    list<Book> lst;

    for (int i = 0; i < 5; ++i)
    {
        Book A;
        A.fill();
        push(lst, A);

    }

    auto iter = lst.begin();
    advance(iter, 2);
    Book B = pop(lst, iter);
    B.print();

    return 0;
}