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- /**
- * Created by IntelliJ IDEA.
- * User: LAPD
- * Date: 4.12.2017 г.
- * Time: 10:54 ч.
- */
- import java.text.ParseException;
- import java.text.SimpleDateFormat;
- import java.util.*;
- public class _24BookLibrary {
- public static void main(String[] args) {
- Scanner console = new Scanner(System.in);
- int n = Integer.parseInt(console.nextLine());
- Library newLibrary = new Library("New",
- new ArrayList<>());
- for (int i = 0; i < n; i++) {
- String[] input = console.nextLine().split(" ");
- newLibrary.books.add(ReadBook(input));
- }
- PrintBooks(newLibrary);
- }
- private static void PrintBooks(Library newLibrary) {
- HashMap<String, Double> authorSales = new HashMap<>();
- for (Book b : newLibrary.books) {
- if (!authorSales.containsKey(b.author)) {
- authorSales.put(b.author, 0.0);
- }
- authorSales.put(b.author,
- authorSales.get(b.author) + b.price);
- }
- Map<String, Double> sorted = sortHash(authorSales);
- for (Map.Entry<String, Double> entry : sorted.entrySet()) {
- String key = entry.getKey();
- Double value = entry.getValue();
- System.out.printf(key + " -> %.2f%n", value);
- }
- }
- private static Map<String, Double> sortHash(Map<String, Double> map) {
- List<Map.Entry<String, Double>> list = new ArrayList<>(map.entrySet());
- // Sort list by integer values then by string keys
- Collections.sort(list, (a, b) -> {
- int cmp1 = a.getValue().compareTo(b.getValue());
- if (cmp1 != 0)
- return cmp1;
- else
- return a.getKey().compareTo(b.getKey());
- });
- Map<String, Double> result = new HashMap<>();
- for (Map.Entry<String, Double> entry : list)
- result.put(entry.getKey(), entry.getValue());
- return result;
- }
- public static Book ReadBook(String[] input) {
- String title = input[0];
- String author = input[1];
- String publisher = input[2];
- Date releaseDate = null;
- try {
- releaseDate = new SimpleDateFormat("dd.MM.yyyy").parse(input[3]);
- } catch (ParseException e) {
- e.printStackTrace();
- }
- String ISBN = input[4];
- double price = Double.parseDouble(input[5]);
- Book currentBook = new Book(title,
- author,
- publisher,
- releaseDate,
- ISBN,
- price);
- return currentBook;
- }
- public static class Library {
- public String name;
- public List<Book> books;
- public Library(String name, List<Book> books) {
- this.name = name;
- this.books = books;
- }
- }
- public static class Book {
- public String title;
- public String author;
- public String publisher;
- public Date releaseDate;
- public String ISBN;
- public Double price;
- public Book(String title,
- String author,
- String publisher,
- Date releaseDate,
- String ISBN,
- Double price) {
- this.title = title;
- this.author = author;
- this.publisher = publisher;
- this.releaseDate = releaseDate;
- this.ISBN = ISBN;
- this.price = price;
- }
- }
- }
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