Your Dashboard
Interview Coaching
Learn
System Design
ML System Design
Code
Behavioral
Salary Negotiation
Interview Guides
Search
⌘K
Get Premium
Leetcode 3230. Customer Purchasing Behavior Analysis
Given a set of transaction logs, group and time-order purchases per customer to detect patterns like frequent items/sequences, repeat-purchase intervals, or top-K trends; the core challenge is efficient grouping, sorting by timestamp, and counting/aggregating across large data (hash maps, sliding windows, and top-K structures).
Question Timeline
See when this question was last asked and where, including any notes left by other candidates.
All Regions
Comments
Hello Interview Premium
Your account is free and you can post anonymously if you choose.