Which of the following code snippets correctly checks if a room is available given a list of booked rooms booked_rooms = [101, 102, 103] and a requested room requested_room = 104?

easy📝 Conceptual Q12 of 15

LLD - Design — Hotel Booking System

Which of the following code snippets correctly checks if a room is available given a list of booked rooms booked_rooms = [101, 102, 103] and a requested room requested_room = 104?

Aif requested_room in booked_rooms: print('Available')

Bif requested_room == booked_rooms: print('Available')

Cif requested_room not in booked_rooms: print('Available')

Dif requested_room > booked_rooms: print('Available')

Step-by-Step Solution

Solution:

Step 1: Understand the list and requested room
booked_rooms contains rooms already taken: 101, 102, 103. requested_room is 104.
Step 2: Check correct condition for availability
Room is available if requested_room is NOT in booked_rooms. So, 'if requested_room not in booked_rooms' is correct.
Final Answer:
if requested_room not in booked_rooms: print('Available') -> Option C
Quick Check:
Not in booked_rooms means available [OK]

Quick Trick: Check 'not in' to confirm availability [OK]

Common Mistakes:

Using 'in' instead of 'not in' to check availability
Comparing equality of a number to a list
Using greater than operator on list

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Which of the following code snippets correctly checks if a room is available given a list of booked rooms booked_rooms = [101, 102, 103] and a requested room requested_room = 104?

Step 1: Understand the list and requested room

Step 2: Check correct condition for availability

Final Answer:

Quick Check:

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