In-Memory File System with Duplicates | Dataford Interview Questions

Implement an in-memory file/directory system for Harvey's Vault, where users upload files into a vault; duplicate files are represented as numbered copies (e.g. a '_2' suffix). Asked in the onsite stage. Much of the spec is points-walled; visible text mentions Vault uploads and '_2' copies.

Contract

Implement vault_uploads(paths). Each input is a normalized file path using /. Process uploads in order and return the stored path for each upload. Preserve directory components and insert the copy suffix before the extension. The first reports/contract.pdf is unchanged; later copies become reports/contract_2.pdf, reports/contract_3.pdf, and so on. If a generated path is already occupied by another upload, skip it and use the next available number.

Constraints

1 <= len(paths) <= 10^4
Each path is a non-empty string using '/' as the separator
Each path has at least one filename component
Filenames may contain periods
Uploads are processed in input order

Function Signature

def vault_uploads(paths):

Your question is In-Memory File System with Duplicates. 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

Contract

Constraints

1 <= len(paths) <= 10^4
Each path is a non-empty string using '/' as the separator
Each path has at least one filename component
Filenames may contain periods
Uploads are processed in input order

Function Signature

def vault_uploads(paths):

Your question is In-Memory File System with Duplicates. 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.