Class diagrams in LLD - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a class named Vehicle.

LLD

class [1]:
    pass

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AVehicle

Bvehicle

CCar

DvehicleClass

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase names for class names.

Using unrelated class names.

The class name should be Vehicle with a capital V to follow naming conventions.

2fill in blank

medium

Complete the code to add an attribute named speed to the Vehicle class.

LLD

class Vehicle:
    def __init__(self, [1]):
        self.speed = speed

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Aspeed_value

Bvelocity

Cspeed

Dspeedy

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different parameter name than the attribute name.

Forgetting to add the parameter in __init__.

The constructor parameter should be named speed to match the attribute assignment.

3fill in blank

hard

Fix the error in the method that returns the speed of the vehicle.

LLD

class Vehicle:
    def __init__(self, speed):
        self.speed = speed

    def get_speed(self):
        return [1].speed

Drag options to blanks, or click blank then click option'

Aself

Bspeed

CVehicle

Dthis

Attempts:

3 left

💡 Hint

Common Mistakes

Using the class name instead of self.

Using undefined variables.

The method should return self.speed to access the instance attribute.

4fill in blank

hard

Fill both blanks to define a subclass Car that inherits from Vehicle and adds a new attribute brand.

LLD

class [1]([2]):
    def __init__(self, speed, brand):
        super().__init__(speed)
        self.brand = brand

Drag options to blanks, or click blank then click option'

ACar

BVehicle

CBike

DTransport

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong class names for subclass or parent.

Forgetting to inherit from the parent class.

The subclass is named Car and it inherits from Vehicle.

5fill in blank

hard

Fill all three blanks to complete the class diagram code with an association: Garage has many Cars.

LLD

class Garage:
    def __init__(self):
        self.[1] = []

    def add_car(self, [2]):
        self.[3].append(car)

Drag options to blanks, or click blank then click option'

Acars

Bcar

Dvehicles

Attempts:

3 left

💡 Hint

Common Mistakes

Using inconsistent names for the list attribute.

Using wrong parameter names.

The Garage class has a list named cars to hold multiple Car objects. The method parameter is car, and the list cars is appended.