[Solved] Analyze the following pseudo-code for releasing a hold:if hold.exists(hold_id) and hold.is_expired(hold_id): release_hold(hold_id) return 'Hold released' else:... | LLD

LLD - Design — Library Management System

Analyze the following pseudo-code for releasing a hold:

if hold.exists(hold_id) and hold.is_expired(hold_id):
    release_hold(hold_id)
    return 'Hold released'
else:
    return 'Hold still valid'

What will be the output if the hold is still active?

A'Hold released'

B'Hold still valid'

C'Hold does not exist'

D'Error: Invalid hold_id'

Step-by-Step Solution

Solution:

Step 1: Check hold existence
The code first verifies if the hold exists using hold.exists(hold_id).
Step 2: Check hold expiration
Then it checks if the hold is expired with hold.is_expired(hold_id).
Step 3: Evaluate condition when hold is active
If the hold is still active (not expired), the condition fails, so the else branch executes.
Final Answer:
'Hold still valid' -> Option B
Quick Check:
Hold active means no release triggered [OK]

Quick Trick: If hold not expired, else branch runs [OK]

Common Mistakes:

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