Deduplicate User IDs Function | Dataford Interview Questions

Write a function to deduplicate a list of user IDs from a dataset.

Given a list of string user IDs, return a new list containing each ID once, preserving the order of first appearance. Use the signature def deduplicate_user_ids(user_ids):.

Constraints

0 <= len(user_ids) <= 1000
Each user ID is a non-empty string
The output must preserve first-appearance order

Function Signature

def deduplicate_user_ids(user_ids):

Your question is Deduplicate User IDs Function. Start with the requirements in the Question tab.

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Problem

Write a function to deduplicate a list of user IDs from a dataset.

Given a list of string user IDs, return a new list containing each ID once, preserving the order of first appearance. Use the signature def deduplicate_user_ids(user_ids):.

Constraints

0 <= len(user_ids) <= 1000
Each user ID is a non-empty string
The output must preserve first-appearance order

Function Signature

def deduplicate_user_ids(user_ids):

Your question is Deduplicate User IDs Function. 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.