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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,6 +1,84 @@ | ||
| import java.util.ArrayList; | ||
| import java.util.List; | ||
| import java.util.Scanner; | ||
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| public class Main { | ||
| public static void main(String[] args) { | ||
| System.out.println("Hello world!"); | ||
| Scanner scanner = new Scanner(System.in); | ||
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| ArrayList<String> productName = new ArrayList<>(); | ||
| ArrayList<String> productPrice = new ArrayList<>(); | ||
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| int company = 0; | ||
| double summ = 0; | ||
| double priceOnePerson = 0.00; | ||
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| while (true) { | ||
| System.out.println("Введите количество гостей"); | ||
| try { | ||
| company = Integer.parseInt(scanner.nextLine()); | ||
| if (company <= 0) { | ||
| System.out.println("Введено некорректное число гостей. Повторите ввод."); | ||
| } else if (company == 1) { | ||
| System.out.println("Нет смысла ничего считать и делить."); | ||
| } else { | ||
| break; | ||
| } | ||
| } catch (NumberFormatException e) { | ||
| System.out.println("Введено не число. Повторите ввод."); | ||
| } | ||
| } | ||
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| while (true) { | ||
| System.out.println("Количество людей: " + company); | ||
| break; | ||
| } | ||
| String prName = ""; | ||
| boolean f = false; | ||
| while (!f) { | ||
| System.out.println("Введите название продукта или 'Завершить'. "); | ||
| prName = scanner.nextLine(); | ||
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| if (prName.equalsIgnoreCase("завершить")) { | ||
| break; | ||
| } | ||
| if (prName.matches(".*\\d+.*") || prName.trim().isEmpty()) { | ||
| System.out.println("Название продукта не может содержать цифры или быть пустым. Пожалуйста, введите название продукта:"); | ||
| f = true; | ||
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| //я не понимаю как после этой ошибки заново запрашивать название продукта, я 3 раза переписал весь код запроса названия и цены и ничего не понимаю. | ||
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| } | ||
| productName.add(prName); | ||
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| double prPrice = 0; | ||
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| while (prPrice <= 0) { | ||
| try { | ||
| System.out.println("Введите цену продукта"); | ||
| prPrice = Double.parseDouble(scanner.nextLine()); | ||
| if (prPrice <= 0) { | ||
| System.out.println("Цена продукта должна быть больше нуля. Пожалуйста, введите положительное число"); | ||
| } | ||
| } catch (NumberFormatException e) { | ||
| System.out.println("Ошибка! Пожалуйста, введите положительное число:"); | ||
| } | ||
| } | ||
| productPrice.add(prPrice + Okonch.getAddition(prPrice)); | ||
| summ += prPrice; | ||
| } | ||
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| priceOnePerson = summ / company; | ||
| String formattedPrice = String.format("%.2f", priceOnePerson); | ||
| System.out.println("Цена с 1-го человека: " + (formattedPrice) + Okonch.getAddition(priceOnePerson)); | ||
| System.out.println("Добавленные товаров:"); | ||
| for (int i = 0; i < productName.size(); i++) { | ||
| System.out.println(productName.get(i) + " - " + productPrice.get(i)); | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1 @@ | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| public class Okonch { | ||
| public static String getAddition(double prPrice) { | ||
| int prValue = (int) Math.floor(prPrice); | ||
| int preLastDigit = prValue % 100 / 10; | ||
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| if (preLastDigit == 1) { | ||
| return " рублей"; | ||
| } | ||
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| switch (prValue % 10) { | ||
| case 1: | ||
| return " рубль"; | ||
| case 2: | ||
| case 3: | ||
| case 4: | ||
| return " рубля"; | ||
| default: | ||
| return " рублей"; | ||
| } | ||
| } | ||
| } |
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тут цикл у тебя работает как обычная строка, ты зашел в цикл, он один раз выполнился и ты из него вышел. Попробуй его удалить, оставив только System.out.println("Количество людей: " + company);