yakoeka · yakoeka · Dec 14, 2023 · Dec 16, 2023 · Dec 17, 2023 · Charmandik
diff --git a/src/main/java/Calculator.java b/src/main/java/Calculator.java
@@ -0,0 +1,78 @@
+import java.util.ArrayList;
+import java.util.InputMismatchException;
+import java.util.Scanner;
+
+public class Calculator {
+    int guests;
+    double sum;
+    ArrayList<Product> productsList = new ArrayList<>();
+
+    Calculator(int guests) {
+        this.guests = guests;
+    }
+
+    static int getAmountOfGuests(Scanner scanner) {
+        int guests;
+        System.out.println("Введите количество гостей:");
+        while (true) {
+            try {
+                guests = scanner.nextInt();
+            } catch (InputMismatchException e) {
+                System.out.println("Неверный тип вводимого значения");
+                // Очистка символа новой строки из буфера ввода
+                scanner.nextLine();
+                continue;
+            }
+            if (guests > 1) break;
+            else System.out.println("Некорректное значение для подсчёта");
+        }
+        return guests;
+    }
+
+    double addProductAndGetSum(Calculator calculator, Scanner scanner) {
+        double sum = 0;
+        // Очистка символа новой строки из буфера ввода
+        scanner.nextLine();
+        while (true) {
+            System.out.println("Введите название товара:");
+            String name = scanner.nextLine();
+
+            double price;
+            do {
+                System.out.println("Введите стоимость товара:");
+                try {
+                    price = scanner.nextDouble();
+                } catch (InputMismatchException e) {
+                    System.out.println("Неверный тип вводимого значения");
+                    // Очистка символа новой строки из буфера ввода
+                    scanner.nextLine();
+                    continue;
+                }
+                break;
+            } while (true);
+            Product product = new Product(name, price);
+            calculator.productsList.add(product);
+            sum += price;
+            System.out.println(String.format("Товар %s успешно добавлен", name));
+            System.out.println("Хотите ли добавить еще один товар?");
+            // Очистка символа новой строки из буфера ввода
+            scanner.nextLine();
+            String word = scanner.nextLine();
+            if ("завершить".equalsIgnoreCase(word)) break;
+        }
+        return sum;
+    }
+
+    void printAllProducts(Calculator calculator) {
+        System.out.println("Добавленные товары:");
+        for (Product element : calculator.productsList) {
+            System.out.println(element.name);
+        }
+    }
+
+    void printResultingSum(Calculator calculator) {
+        double resultSum = calculator.sum / calculator.guests;
+        Formatter formatter = new Formatter();
+        System.out.println(String.format("%.2f %s", resultSum, formatter.getDeclension(resultSum)));
+    }
+}
diff --git a/src/main/java/Formatter.java b/src/main/java/Formatter.java
@@ -0,0 +1,25 @@
+public class Formatter {
+    String getDeclension(double price) {
+        int resultSumIntDiv10 = ((int) price) % 10;
+        String rub = "";
+        switch (resultSumIntDiv10) {
+            case 1:
+                rub = "рубль";
+                break;
+            case 2:
+            case 3:
+            case 4:
+                rub = "рубля";
+                break;
+            case 5:
+            case 6:
+            case 7:
+            case 8:
+            case 9:
+            case 0:
+                rub = "рублей";
+                break;
+        }
+        return rub;
+    }
+}
diff --git a/src/main/java/Main.java b/src/main/java/Main.java
@@ -1,6 +1,13 @@
+import java.util.Scanner;
 
 public class Main {
     public static void main(String[] args) {
-        System.out.println("Hello world!");
+        Scanner scanner = new Scanner(System.in);
+        int guests = Calculator.getAmountOfGuests(scanner);
+        Calculator calc = new Calculator(guests);
+        calc.sum = calc.addProductAndGetSum(calc, scanner);
+        scanner.close();
+        calc.printAllProducts(calc);
+        calc.printResultingSum(calc);
     }
 }
diff --git a/src/main/java/Product.java b/src/main/java/Product.java
@@ -0,0 +1,9 @@
+public class Product {
+    String name;
+    double price;
+
+    Product(String name, double price) {
+        this.name = name;
+        this.price = price;
+    }
+}