New
ML System Design & SQL tracks just landed
See what's new
×
Question Bank
Pricing
Blog
Forum
HOT
Referral
Description
Solution
Discussion
Submissions
Ask AI
Question Bank
Affirm
Coding Question
AI Insights
Quick Summary
Track distinct PII values from a stream of underwriting events.
Filter events by type and process specific fields.
Maintain a count of unique non-empty string values across time.
What This Tests
Hash Sets for O(1) lookup and deduplication.
Class design and state management.
Iterating over fixed-size arrays with conditional logic.
Common Patterns
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
