New
ML System Design & SQL tracks just landed
See what's new
×
Question Bank
Pricing
Blog
Forum
HOT
JobRadar
NEW
Referral
Description
Solution
Discussion
Submissions
Ask AI
Question Bank
DoorDash
Coding Question
AI Insights
Quick Summary
Design a hierarchical key-value store that organizes data using directory-style paths.
Implement CRUD operations including creation, update, retrieval, and leaf-only deletion.
Ensure efficient navigation and state management across a nested path structure.
What This Tests
Tree-based data structure design and traversal
String tokenization and hierarchical mapping
Edge case handling for nested state mutations
Time and space complexity optimization for recursive structures
Common Patterns
Trie
Hashing
Collapse
Hint 1
Hint 2
Hint 3
What Interviewers May Ask Next
Ask AI Assistant
Ask AI Assistant
Ask me anything about this coding question!
Qwen
Qwen3.6-Flash
0/2000
Auto
Debug
Run
Submit
Test Cases
Input
Output
Expected
