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console application #1 #1

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5d8aa6a
console application #1
Liocha Oct 10, 2023
a81d6d1
console application #1 (попытка 2, после ревью)
Liocha Oct 11, 2023
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115 changes: 113 additions & 2 deletions src/main/java/Main.java
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Original file line number Diff line number Diff line change
@@ -1,6 +1,117 @@
import java.util.Scanner;

public class Main {
public static void main(String[] args) {
System.out.println("Hello world!");
int peopleCount;
String productName;
double productPrice;
Product product;
double result;
String answer;
Comment on lines +5 to +10

@ArturNurtdinov ArturNurtdinov Oct 10, 2023

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Переменные нужно объявлять как можно ближе к месту их использования

Scanner scanner = new Scanner(System.in);
Calculator calculator = new Calculator();
while (true) {
System.out.println("На скольких человек необходимо разделить счёт?");
if (!scanner.hasNextInt()) {
System.out.println("Извините, но это явно не целое число.");
scanner.nextLine();
continue;
}
peopleCount = scanner.nextInt();
if (peopleCount < 1) {
System.out.println("Количество человек не может быть меньше 1.");
} else if (peopleCount == 1) {
System.out.println("Количество человек не может быть равно 1.");
} else {
scanner.nextLine();
break;
}
scanner.nextLine();
}
do {
while (true) {
System.out.println("Укажите название товара:");
productName = scanner.nextLine();
if (productName.length() > 1) {
break;
}
System.out.println("Извините, но название товара не может быть пустой строкой.");
}
while (true) {
System.out.println("Укажите стоимость товара:");
if (!scanner.hasNextDouble()) {
System.out.println("Извините, но это явно не число.");
scanner.nextLine();
continue;
}
productPrice = scanner.nextDouble();
if (productPrice < 0) {
System.out.println("Извините, но стоимость товара не может быть отрицательной.");
} else {
scanner.nextLine();
break;
}
scanner.nextLine();
}
product = new Product(productName, productPrice);
calculator.add(product);
System.out.println("Вы хотите добавить еще один товар? Если нет, укажите 'завершить'");
answer = scanner.nextLine();
} while (!answer.equalsIgnoreCase("завершить"));
System.out.println("Добавленные товары:" + calculator.getProducts());
result = calculator.getTotal() / peopleCount;
System.out.println("Каждый человек должен заплатить: " + Formatter.getFormatPrice(result) + " " + Formatter.getEnding(result));
scanner.close();
}
}
}

class Calculator {
private double total = 0;
private String products = "";

public void add(Product product) {
this.total = this.total + product.price;
this.products = this.products + "\n" + product.name;
System.out.println("Товар успешно добавлен!");
}

String getProducts() {
return products;
}

double getTotal() {
return this.total;
}
}

class Product {
final String name;
final double price;

Product(String name, double price) {
this.name = name;
this.price = price;
}
}

class Formatter {
public static String getFormatPrice(double price) {
return String.format("%.2f", price);
}

public static String getEnding(double price) {
double priceRoundedDown = Math.floor(price);
double remainderPerHundred = priceRoundedDown % 100;
if (remainderPerHundred >= 11 && remainderPerHundred <= 19) {
return "рублей";
}
double remainderByTen = priceRoundedDown % 10;
if (remainderByTen == 1) {
return "рубль";
} else if (remainderByTen >= 2 && remainderByTen <= 4) {
return "рубля";
} else {
return "рублей";
}
}
}