Room type hierarchy in LLD - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare the base class for all room types.

LLD

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

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

ARoom

BRoomType

CBaseRoom

DRoomBase

Attempts:

3 left

💡 Hint

Common Mistakes

Using plural names like Rooms

Using unrelated names like Building

The base class for all room types is commonly named Room to represent a generic room.

2fill in blank

medium

Complete the code to define a subclass for a conference room inheriting from the base room.

LLD

class ConferenceRoom([1]):
    def __init__(self, room_number, capacity):
        super().__init__(room_number)
        self.capacity = capacity

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ARoom

BRoomType

CBaseRoom

DBuilding

Attempts:

3 left

💡 Hint

Common Mistakes

Inheriting from unrelated classes

Forgetting to call super().__init__

The subclass ConferenceRoom inherits from the base class Room.

3fill in blank

hard

Fix the error in the method overriding to return the room type name.

LLD

class MeetingRoom(Room):
    def get_type(self):
        return [1]

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Aself.MeetingRoom

BMeetingRoom

C'MeetingRoom'

Dget_type

Attempts:

3 left

💡 Hint

Common Mistakes

Returning the class name without quotes

Returning a method name instead of a string

The method should return the string 'MeetingRoom' to indicate the room type.

4fill in blank

hard

Fill both blanks to create a dictionary comprehension mapping room numbers to their types for rooms with capacity over 10.

LLD

room_types = {room.room_number: room.get_type() for room in rooms if room.[1] > [2]

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Acapacity

Bsize

C10

D15

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong attribute names

Using incorrect threshold values

The comprehension filters rooms with capacity greater than 10.

5fill in blank

hard

Fill all three blanks to create a list comprehension of room numbers for rooms that are either ConferenceRoom or MeetingRoom.

LLD

selected_rooms = [room.[1] for room in rooms if isinstance(room, [2]) or isinstance(room, [3])]

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Aroom_number

BConferenceRoom

CMeetingRoom

DRoom

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong attribute names

Checking against the base Room class instead of subclasses

The list comprehension collects room_number for rooms that are instances of ConferenceRoom or MeetingRoom.