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Pull request for extraction with my project work #2
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e4c5a46
Первый коммит с набросками.
DexMP e5bc7b0
Исправленны ошибки
DexMP dac4cc5
Новый цикл с добавлением продуктов
DexMP 22911ef
mini fixed
DexMP 2ec38a4
new changes
DexMP 32044f1
mb complete
DexMP 7d12551
mini fix
DexMP a7a368d
Update src/main/java/Main.java
DexMP 98508b0
Update src/main/java/Main.java
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96 changes: 95 additions & 1 deletion
src/main/java/Main.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,6 +1,100 @@ | ||
| import java.util.ArrayList; | ||
| import java.util.Scanner; | ||
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| public class Main { | ||
| public static void main(String[] args) { | ||
| System.out.println("Hello world!"); | ||
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| // List | ||
| ArrayList<Product> productsName = new ArrayList<Product>(); | ||
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| // Переменные | ||
| int humans; | ||
| double price; | ||
| String products; | ||
| float summ = 0; | ||
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| // Сканеры | ||
| Scanner scanner_humans = new Scanner(System.in); | ||
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. 🍏 В Java принято переменные писать в camelCase, а названия классов CamelCase. |
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| Scanner scanner_products = new Scanner(System.in); | ||
| Scanner scanner_prices = new Scanner(System.in); | ||
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. 🍏 Для всего взаимодействия с пользователем достаточно открыть один сканнер |
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| // Поздороваемся! | ||
| System.out.println("Доброго времени суток!\n" + | ||
| "На скольких человек необходимо разделить счёт:"); | ||
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| // Получаем количество людей | ||
| while (true) { | ||
| if (scanner_humans.hasNextInt()) { | ||
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. 👏 Круто, что делаешь проверку на наличие числа |
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| humans = scanner_humans.nextInt(); | ||
| while (humans <= 1) { | ||
| System.out.println("Количество людей должно быть более 1"); | ||
| humans = scanner_humans.nextInt(); | ||
| if (humans > 1) break; | ||
| } | ||
| break; | ||
| } else { | ||
| System.out.println("Возможно вы ввели не число, попробуйте ещё раз!"); | ||
| scanner_humans.nextLine(); | ||
| } | ||
| } | ||
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| // Получаем товары | ||
| while (true) { | ||
| System.out.println("Название товара:"); | ||
| if (scanner_products.hasNext()) { | ||
| products = scanner_products.nextLine(); | ||
| if (!products.equalsIgnoreCase("завершить")) { | ||
| productsName.add(new Product(products)); | ||
| System.out.println("Укажите цену товара в формате рубли.копейки: "); | ||
| if (scanner_prices.hasNextDouble()) { | ||
| price = scanner_prices.nextDouble(); | ||
| while (price <= 0) { | ||
| System.out.println("Значение не может быть 0 или меньше!"); | ||
| price = scanner_prices.nextDouble(); | ||
| if (price > 0) { | ||
| System.out.println(String.format("Цена: %.2f", price)); | ||
| break; | ||
| } | ||
| } | ||
| summ += price; | ||
| System.out.println("Добавленные товары:"); | ||
| for (Product name : productsName) { | ||
| System.out.println("* " + productsName.get(i).productName); | ||
| } | ||
| System.out.println("Сумма: " + String.format("%.2f", summ)); | ||
| } else { | ||
| System.out.println("Кажется вы указали неверный формат!"); | ||
| scanner_prices.hasNextDouble(); | ||
| } | ||
| } else { | ||
| float forPerson = summ / humans; | ||
| int rubles = (int) forPerson; | ||
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| System.out.println("Сумма на каждого человека " + String.format("%.2f", forPerson) + " " + grammar(rubles)); | ||
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. 🍏 При печати в памяти будут создаваться промежуточные строки из-за множественного использования оператора "+". Можно использовать StringBuilder, который сформирует только результирующую строку, или String.format() |
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| break; | ||
| } | ||
| } else { | ||
| System.out.println("Не получено данных о товаре!"); | ||
| scanner_products.nextLine(); | ||
| } | ||
| } | ||
| } | ||
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| private static String grammar(int rubles) { | ||
| if (lastIndexRub(rubles).equals("0")) { | ||
| return "рублей"; | ||
| } else if (lastIndexRub(rubles).equals("1")) { | ||
| return "рубль"; | ||
| } else if (lastIndexRub(rubles).equals("2") || lastIndexRub(rubles).equals("3") || lastIndexRub(rubles).equals("4")) { | ||
| return "рубля"; | ||
| } else { | ||
| return "рублей"; | ||
| } | ||
| } | ||
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| private static String lastIndexRub(int rubles) { | ||
| String str = String.valueOf(rubles); | ||
| str.substring(str.length() - 1); | ||
| return str; | ||
| } | ||
| } | ||
8 changes: 8 additions & 0 deletions
src/main/java/Product.java
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,8 @@ | ||
| public class Product { | ||
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| String productName; | ||
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| public Product(String productName) { | ||
| this.productName = productName; | ||
| } | ||
| } |
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