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Проектная работа No1 #1

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27 changes: 27 additions & 0 deletions src/main/java/Car.java
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Original file line number Diff line number Diff line change
@@ -0,0 +1,27 @@
/**
* Класс автомобиля - участника гонки
*/
public class Car {
private String name; // Название автомобиля
private int speed; // Скорость в км/ч

public Car(String name, int speed) {
this.name = name;
this.speed = speed;
}

public String getName() {
return name;
}

public int getSpeed() {
return speed;
}

/**
* Расчет расстояния за 24 часа
*/
public double calculateDistance() {
return speed * 24; // 24 часа гонки
}
}
62 changes: 60 additions & 2 deletions src/main/java/Main.java
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Original file line number Diff line number Diff line change
@@ -1,6 +1,64 @@
import java.util.Scanner;

public class Main {
public static void main(String[] args) {
System.out.println("Hello world!");
Scanner scanner = new Scanner(System.in);
Car[] cars = new Car[3];
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@ArturNurtdinov ArturNurtdinov Nov 2, 2025

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От хранения массива машин и лишнего цикла при определении победителя можно избавиться, если при вводе данных сразу вычислять победителя и хранить его в отдельной переменной, тогда программа будет требовать меньше памяти и работать быстрее


System.out.println("=== 24 часа Ле-Мана ===");

// Ввод данных для трех автомобилей
for (int i = 0; i < 3; i++) {
System.out.println("— Введите название машины No" + (i + 1) + ":");
String name = scanner.nextLine();

int speed = getValidSpeed(scanner, i + 1);

cars[i] = new Car(name, speed);
}

// Определяем победителя
Race race = new Race(cars);
Car winner = race.getLeader();

// Выводим результат
System.out.println("Самая быстрая машина: " + winner.getName());

scanner.close();
}

/**
* Метод для получения корректной скорости с проверкой
*/
private static int getValidSpeed(Scanner scanner, int carNumber) {
int speed = 0;
boolean isValid = false;

while (!isValid) {
System.out.println("— Введите скорость машины No" + carNumber + ":");
String input = scanner.nextLine();

try {
// Проверяем на дробное число
if (input.contains(".") || input.contains(",")) {
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@ArturNurtdinov ArturNurtdinov Nov 2, 2025

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Уже есть обработка NumberFormatException , поэтому от этой проверки можно отказаться

System.out.println("— Неправильная скорость");
continue;
}

speed = Integer.parseInt(input);

// Проверяем диапазон
if (speed <= 0 || speed > 250) {
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@ArturNurtdinov ArturNurtdinov Nov 2, 2025

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Минимальную и максимальную скорости лучше вынести в константы для повышения читабельности кода

System.out.println("— Неправильная скорость");
} else {
isValid = true;
}

} catch (NumberFormatException e) {
System.out.println("— Неправильная скорость");
}
}

return speed;
}
}
}
36 changes: 36 additions & 0 deletions src/main/java/Race.java
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@@ -0,0 +1,36 @@
/**
* Класс гонки - определяет победителя
*/
public class Race {
private Car[] cars;
private Car leader;

public Race(Car[] cars) {
this.cars = cars;
calculateLeader();
}

/**
* Вычисляем лидера по пройденному расстоянию за 24 часа
*/
private void calculateLeader() {
if (cars == null || cars.length == 0) {
return;
}

leader = cars[0];
double maxDistance = leader.calculateDistance();

for (int i = 1; i < cars.length; i++) {
double currentDistance = cars[i].calculateDistance();
if (currentDistance > maxDistance) {
maxDistance = currentDistance;
leader = cars[i];
}
}
}

public Car getLeader() {
return leader;
}
}

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