Design In-Memory File System: coding question

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Design an in-memory hierarchical file system that supports path parsing and operations like mkdir, ls, addContentToFile (append/create), and readContentFromFile, requiring you to model directories vs files and maintain file contents. The core challenge is choosing an efficient tree/trie structure to handle traversal, creation, and listing (often lexicographically) while correctly distinguishing files from directories.

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Anchorage Digital
Leetcode 588. Design In-Memory File System
Reported Jun 22, 2026 · 1 source report
SENIOR
Source snapshot: Nov 12, 2026
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Capital One
Leetcode 588. Design In-Memory File System
Reported Jun 24, 2026 · 1 source report
SENIOR
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Coupang
Leetcode 588. Design In-Memory File System
Reported Jun 20, 2026 · 1 source report
STAFF
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Datadog
Leetcode 588. Design In-Memory File System
Reported Aug 10, 2026 · 1 source report
STAFF
Source snapshot: Nov 12, 2026

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Design In-Memory File System

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Design In-Memory File System

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