Design Patterns and Rationale | Dataford Interview Questions

What are the common design patterns you use, and why?

Implement a transformation pipeline that demonstrates the Factory and Strategy patterns. Given a list of integers and ordered operation dictionaries, return the values after applying each operation sequentially.

Use the function signature below. Each operation is one of add, multiply, filter_even, or deduplicate.

Constraints

0 <= len(values) <= 1000
0 <= len(operations) <= 1000
-10^9 <= values[i] <= 10^9
Each operation type is add, multiply, filter_even, or deduplicate
add and multiply operations contain an integer value field
Operations must be applied in their given order

Function Signature

def apply_transformations(values, operations):

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Problem

What are the common design patterns you use, and why?

Use the function signature below. Each operation is one of add, multiply, filter_even, or deduplicate.

Constraints

0 <= len(values) <= 1000
0 <= len(operations) <= 1000
-10^9 <= values[i] <= 10^9
Each operation type is add, multiply, filter_even, or deduplicate
add and multiply operations contain an integer value field
Operations must be applied in their given order

Function Signature

def apply_transformations(values, operations):

Your question is Design Patterns and Rationale. 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.