Modify Code for New Requirements | Dataford Interview Questions

Modify code based on updated requirements.

Implement apply_updates(records, updates) to apply ordered upsert and delete operations. Each record is [identifier, value]; each update is a dictionary with op, id, and, for upserts, value. Existing records keep their position when updated, new records are appended, and deleting a missing identifier has no effect. Return a new list without mutating the input records.

Signature: def apply_updates(records, updates):

Constraints

0 <= len(records) <= 10^4
0 <= len(updates) <= 10^4
Each record has the form [identifier, value]
Identifiers are unique in records
Each update operation is either "upsert" or "delete"
A delete update does not require a value field

Function Signature

def apply_updates(records, updates):

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Problem

Modify code based on updated requirements.

Signature: def apply_updates(records, updates):

Constraints

0 <= len(records) <= 10^4
0 <= len(updates) <= 10^4
Each record has the form [identifier, value]
Identifiers are unique in records
Each update operation is either "upsert" or "delete"
A delete update does not require a value field

Function Signature

def apply_updates(records, updates):

Your question is Modify Code for New Requirements. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.