3

src/main/java/Main.java

@@ -1,9 +1,89 @@
+import java.util.Scanner;
 public class Main {
-
     public static void main(String[] args) {
-        // ваш код начнется здесь
-        // вы не должны ограничиваться только классом Main и можете создавать свои классы по необходимости
-        System.out.println("Привет Мир");
+        PeopleAmount.peopleCounter();
     }
-}
-//
+    public static class PeopleAmount {
+        public static int amount;
+        public static void peopleCounter() {
+            while (true) {
+                System.out.println("How many people?");
+                Scanner scanner = new Scanner(System.in);
+                if (scanner.hasNextInt()) {
+                    amount = scanner.nextInt();
+                } else {
+                    System.out.println("You should have entered amount");
+                    continue;
+                }
+                if (amount <= 1) {
+                    System.out.println("Amount of people should be at least 2");
+                } else {
+                    Calculate.calculate();
+                }
+            }
+        }
+    }
+    public static class Calculate {
+        static double price;
+        public static double sum = 0;
+        public static String allProducts = "\n";
+        public static void calculate() {
+            while (true) {
+                System.out.println("Enter the name of product");
+                Scanner scanner = new Scanner(System.in);
+                String product = scanner.next();
+                if (product.equalsIgnoreCase("завершить")) {
+                    Result.result();
+                }
+                System.out.println("Enter product price in the format 'rubles,kopecks'(xx,xx)");
+                if (scanner.hasNextDouble()) {
+                    price = scanner.nextDouble();
+                } else {
+                    System.out.println("You should have entered price");
+                    continue;
+                }
+                if (price >= 0) {
+                    sum = sum + price;
+                    allProducts += product + "\n";
+                    System.out.println("Product successfully added");
+                    System.out.println("Products: " + allProducts + "Final price= " + sum);
+                    System.out.println("Type \"завершить\" if you want to end calculation");
+                } else {
+                    System.out.println("Price should be more than 0");
+                    continue;
+                }
+            }
+        }
+    }
+    public static class Result {
+        static double everyoneShouldPay = Calculate.sum / PeopleAmount.amount;
+        public static void result() {
+            System.out.println("Added products:" + Calculate.allProducts);
+            System.out.println("Price: " + Calculate.sum);
+            Result.money();
+        }
+        public static void money() {
+            double everyoneShouldPay = Calculate.sum / PeopleAmount.amount;
+            int value =(int) everyoneShouldPay;
+            int x = value % 10;
+            String strDouble= "Everyone should pay  %.2f ";
+            if (value % 100 >= 11 && value % 100 <= 14) {
+                System.out.println(String.format(strDouble,everyoneShouldPay) + " рублей");
+            } else {
+                switch (x) {
+                    case 1:
+                        System.out.println(String.format(strDouble,everyoneShouldPay)+ " рубль");
+                        break;
+                    case 2:
+                    case 3:
+                    case 4:
+                        System.out.println(String.format(strDouble,everyoneShouldPay)+ " рубля");
+                        break;
+                    default:
+                        System.out.println(String.format(strDouble,everyoneShouldPay)+ " рублей");
+                }
+            }
+            System.exit(0);
+        }
+    }
+}