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Dev calc 2 #2
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Dev calc 2 #2
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104 changes: 103 additions & 1 deletion
src/main/java/Main.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,6 +1,108 @@ | ||
| import java.util.HashMap; | ||
| import java.util.Map; | ||
| import java.util.Scanner; | ||
|
|
||
| public class Main { | ||
| public static void main(String[] args) { | ||
| System.out.println("Hello world!"); | ||
| int persons = check(); | ||
|
|
||
| Calculate oneCalc = new Calculate(); | ||
| oneCalc.addProduct(); | ||
| oneCalc.showSoppingList(); | ||
| oneCalc.showCalculation(persons); | ||
| } | ||
|
|
||
| private static int check() { | ||
| String regex = "[0-9]+"; | ||
| int num; | ||
| Scanner scanner = new Scanner(System.in); | ||
| while (true) { | ||
| System.out.println("На скольких человек необходимо разделить счёт ?"); | ||
| String count = scanner.nextLine(); | ||
| if (count.matches(regex)) { | ||
| num = Integer.parseInt(count); | ||
| if (num > 1) break; | ||
| } | ||
| System.out.println("Введено некорректное значение для подсчёта."); | ||
| } | ||
| return num; | ||
| } | ||
| } | ||
|
|
||
| class Calculate { | ||
| HashMap<String, Double> products = new HashMap<>(); | ||
|
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| void addProduct() { | ||
| String regex = "[0-9]+\\.[0-9]{2}"; | ||
| String regexZero = "0+\\.0+"; | ||
| Scanner scanner = new Scanner(System.in); | ||
| boolean choice = true; | ||
| while (choice) { | ||
| System.out.println("Введите название товара :"); | ||
| String key = scanner.nextLine(); | ||
| if (key.equalsIgnoreCase("Завершить") && products.isEmpty()) { | ||
| break; | ||
| } | ||
| if (key.equalsIgnoreCase("Завершить") && !products.isEmpty()) break; | ||
| double volume = 0.0; | ||
| String price; | ||
| while (true) { | ||
| System.out.println("Введите стоимость товара :"); | ||
| price = scanner.nextLine(); | ||
|
|
||
| if (products.isEmpty() && price.equalsIgnoreCase("Завершить")) { | ||
|
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| choice = false; | ||
| break; | ||
| } | ||
| if (price.equalsIgnoreCase("Завершить")) { | ||
| System.out.println("!!!!!!!"); | ||
| choice = false; | ||
| break; | ||
| } | ||
|
|
||
| if (price.matches(regex)) { | ||
| volume = Double.parseDouble(price); | ||
| break; | ||
| } else if (price.matches(regex) && price.matches(regexZero)) { | ||
| System.out.println("Цена не может равняться нулю"); | ||
| break; | ||
| } else System.out.println("Указана неверная цена"); | ||
| if (!choice) break; | ||
|
|
||
| } | ||
| if (!key.equals("") && !price.equals("") && volume != 0.0) products.put(key, volume); | ||
| if (!price.equalsIgnoreCase("завершить")) { | ||
| System.out.println("Товар добавлен в расчет"); | ||
| System.out.println("Хотите добавить ещё один товар ?"); | ||
| } | ||
| if (price.equalsIgnoreCase("завершить") || scanner.nextLine().equalsIgnoreCase("завершить")) | ||
| break; | ||
| } | ||
| } | ||
|
|
||
| void showSoppingList() { | ||
| int count = 1; | ||
| System.out.println("Добавленные товары:"); | ||
| for (Map.Entry<String, Double> product : products.entrySet()) { | ||
| System.out.println(count + ") товар: " + product.getKey() + "; цена: " + product.getValue()); | ||
| count++; | ||
| } | ||
| if (products.size() == 0) System.out.println("отсутствуют"); | ||
| } | ||
|
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||
| void showCalculation(int persons) { | ||
| double sum = 0; | ||
| for (Map.Entry<String, Double> product : products.entrySet()) { | ||
| sum += product.getValue(); | ||
| } | ||
| double moneyOnePerson = sum / persons; | ||
| String rubChar = String.valueOf(((int) moneyOnePerson)); | ||
| String rubl = switch (rubChar.charAt(rubChar.length() - 1)) { | ||
| case '1' -> "рубль"; | ||
| case '2', '3', '4' -> "рубля"; | ||
| default -> "рублей"; | ||
| }; | ||
| System.out.println("Каждый человек должен заплатить: " + String.format("%.2f", moneyOnePerson) + " " + rubl); | ||
| } | ||
| } |
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