BookAuthor - master - Letta21/Letta

BookAuthor
64 строки2 KB
Letta21
create BookAuthorDZ
12 сен 2025, 16:27
12 сен 2025, 16:27ac55c10
public class Main2 {
    public static void main(String[] args) {

        Book book = new Book(
                  new Author( "Иван","Иванов", 2),
                     "Faust",
                 1790,
                      501 );//"Goethe",
        System.out.println("Название книги: " + book.title + ", Год выпуска: " + book.releaseYear + ", Автор: " + book.author + ", Количество страниц: " + book.pages);
        System.out.println("Является ли книга большой? - " + book.isBig());
        System.out.println("Содержит ли книга слово: 'Faust'?" );

        System.out.println( book.matches("Faust", book.author.surname));
       int price = book.estimatePrice(book.pages,book.author.rating);
        System.out.println("Стоимость книги: " + price + " руб.");
    }
}
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public class Book {
    public String title;
    public int releaseYear;
    public Author author;
    public int pages;
    int price;

    public Book(Author author, String title, int releaseYear, int pages) {
        this.title = title;
        this.releaseYear = releaseYear;
        this.author = author;
        this.pages = pages;
    }

    public boolean isBig() {
        return (pages > 500);// true;
    }

    public boolean matches(String word, String surname) {
        return title.contains(word) || author.name.contains(word) || author.surname.contains(word);
    }

    public int estimatePrice(int pages, int rating) {
        double r = rating;
        double floor;
        double sqrt = Math.sqrt(r);
        floor = (pages * 3) * sqrt;//нашли квадр корень
        r = Math.floor(floor);//округлили до целого
        price = (int) r;//привели к int
        //int price = (int)(3 * pages * Math.sqrt(author.rating));
        return price;
    }
}

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public class Author {
    public String name;
    public String surname;
    public int rating;

    public Author(String name, String surname, int rating) {
        this.name = name;
        this.surname = surname;
        this.rating = rating;
    }
}