Production-Ready Modular Code | Dataford Interview Questions

How would you write production-ready code that is correct, optimized, and modular?

Implement deduplicate(values) to return the input integers with duplicates removed while preserving the order of their first occurrence. The function must not mutate values and should use an efficient data structure for membership checks.

Input: a list of integers. Output: a new list containing each distinct integer once.

Constraints

0 <= len(values) <= 10^4
-10^9 <= values[i] <= 10^9
The input list must not be mutated
The output must preserve first-occurrence order

Function Signature

def deduplicate(values):

Your question is Production-Ready Modular Code. 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.

Problem

How would you write production-ready code that is correct, optimized, and modular?

Input: a list of integers. Output: a new list containing each distinct integer once.

Constraints

0 <= len(values) <= 10^4
-10^9 <= values[i] <= 10^9
The input list must not be mutated
The output must preserve first-occurrence order

Function Signature

def deduplicate(values):

Your question is Production-Ready Modular Code. 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.