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41 changes: 41 additions & 0 deletions src/main/java/Calculator.java
Original file line number Diff line number Diff line change
@@ -0,0 +1,41 @@
import java.util.ArrayList;

public class Calculator {
ArrayList<Product> products = new ArrayList<>();
double sum;

boolean add(String name, double price){
Product product = new Product(name, price);
boolean res = products.add(product);
if( res ){
System.out.println("Товар '" + name+"'"+

@Grigoriy-M Grigoriy-M Feb 7, 2024 •

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Вместо конкатенации строк лучше использовать StringBuilder

" стоимостью "+
String.format("%.2f ", price) +
(new Formatter( price ) ).getName()+
" добавлен в список.\n");
sum += price;
}
return res;
}

void printProductList(){
System.out.println("Добавленные товары:");
for(Product product : products){
System.out.println("'" + product.name+"' стоимостью " +
String.format("%.2f ", product.price) +
(new Formatter( product.price ) ).getName() );
}
}

void splitCheck(int countPerson){
double amountPerPerson = sum/countPerson;
System.out.println("\nОбщая сумма: " +
String.format("%.2f ",sum) +
(new Formatter( sum ) ).getName());
System.out.println("Количество человек: " + countPerson);
System.out.println("С каждого: " +
String.format("%.2f ", amountPerPerson) +
(new Formatter( amountPerPerson ) ).getName());
}

}
26 changes: 26 additions & 0 deletions src/main/java/Formatter.java
Original file line number Diff line number Diff line change
@@ -0,0 +1,26 @@
public class Formatter {
int price; // целая часть стоимости

Formatter( double _price ){
price = (int)_price;
}

public String getName(){

//Чтобы отсеять числа, оканчивающиеся на 11 - 19 (11, 111,1011 и т.д.)
int priceDevided = price % 100;
if( (priceDevided > 10) && ( priceDevided < 20) )
return "рублей";

switch (price % 10){
case 1:
return "рубль";
case 2:
case 3:
case 4:
return "рубля";
}

return "рублей";
}
}
54 changes: 53 additions & 1 deletion src/main/java/Main.java
Original file line number Diff line number Diff line change
@@ -1,6 +1,58 @@
import java.util.Scanner;

public class Main {
private static final Scanner scanner = new Scanner(System.in);
private static Calculator calculator = new Calculator();
public static void main(String[] args) {
System.out.println("Hello world!");
System.out.println("Калькулятор счета приветствует вас. ");

int countPerson = getCountPerson();
getProducts();
calculator.printProductList();
calculator.splitCheck(countPerson);

}

public static int getCountPerson(){
int countPerson;

while(true) {
System.out.println("Введите количество человек. Используйте числа больше 1.");
String str = scanner.nextLine();
countPerson = str.matches("\\d+") ? Integer.parseInt(str) : 0;
if (countPerson > 1) {
break;
} else {
System.out.println("Вы ввели некорректное значение: " +
str +
". Введите число больше 1. Попробуйте еще раз.\n");
}
}

return countPerson;
}

public static void getProducts(){
while(true) {
System.out.println("Введите название товара или команду 'Завершить':");
String strName = scanner.nextLine();
if ( strName.equalsIgnoreCase("завершить")){
break;
}
else{
System.out.println("Введите стоимость товара в формате рр.кк:");
String strPrice = scanner.nextLine();
double price = strPrice.matches("\\d{1,}+(\\.\\d{2}+)") ? Double.parseDouble(strPrice) : -1;
if( price >= 0 ){
calculator.add(strName, price);
}
else{
System.out.println("Вы ввели некорректную стоимость товара: " +
strPrice +
". Товар не добавлен в список. Попробуйте еще раз.\n");
}
}
}
}

}
9 changes: 9 additions & 0 deletions src/main/java/Product.java
Original file line number Diff line number Diff line change
@@ -0,0 +1,9 @@
public class Product {
String name;
double price;

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