Validate Unique User IDs

PYTHON coding challenge · Difficulty: easy · +50 XP

Function Signature

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def validate_ids(user_ids: list) -> dict:

Problem

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Given a list of user IDs, validate them

and return a report.

Return a dictionary with:

"valid" → list of valid IDs

"duplicates" → list of IDs appearing 2+

"invalid" → list of IDs that are not

positive integers

Rules:

• Valid: positive integer (>0), unique

• Duplicate: appears more than once

• Invalid: negative, zero, non-integer,

or non-numeric string

Example 1

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Input:

[101, 102, 101, -5, "abc", 103, 0]

Output:

{

"valid": [102, 103],

"duplicates": [101],

"invalid": [-5, "abc", 0]

}

Example 2

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Input: [1, 2, 3, 4, 5]

Output:

{

"valid": [1, 2, 3, 4, 5],

"duplicates": [],

"invalid": []

}

Example 3 (Edge case)

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Input: []

Output: {"valid":[], "duplicates":[],"invalid":[]}

Constraints

-----------

• 0 <= len(user_ids) <= 100,000

• Each element can be any Python type

• Return lists sorted in ascending order