TripAdvisor Coding Interview Questions
31 TripAdvisor coding interview problems with full optimal solutions — 22 easy, 7 medium, 2 hard. Every problem ships with multiple approaches (brute-force first, then the optimal), complexity tables for each, company-specific tips on what an TripAdvisor interviewer values, and a FAQ section.
Showing 7 problems of 31
- #23mediumfoundational
23. Course Schedule
Detect whether a dependency graph contains a cycle — Tripadvisor uses this topological-sort pattern to validate that itinerary leg dependencies (visa requirements, connection airports) form a feasible travel plan with no circular conflicts.
- #24mediumfoundational
24. Merge Intervals
Collapse overlapping date ranges into minimal non-overlapping blocks — Tripadvisor applies this interval-merge pattern constantly: consolidating overlapping hotel availability windows, booking blackout periods, and trip-leg date ranges for seamless itinerary display.
- #25mediumfoundational
25. LRU Cache
Design a cache that evicts the least-recently-used entry when capacity is exceeded — Tripadvisor uses LRU caches throughout their recommendation pipeline to keep hot destination and hotel data in memory without unbounded growth.
- #26mediumfoundational
26. Word Search
Find whether a word exists in a 2D character grid via adjacent cells — Tripadvisor's content team uses backtracking grid-search logic to detect destination or attraction name patterns embedded in structured review matrices.
- #27mediumfoundational
27. Find Peak Element
Locate a local maximum in an unsorted array in O(log n) — Tripadvisor uses binary search on unimodal signals to find peak engagement periods in destination popularity curves and seasonal booking trend data.
- #28mediumfoundational
28. K Closest Points to Origin
Return the k nearest coordinates to a center point — Tripadvisor's geo-search engine applies this heap/quickselect pattern to surface the k nearest hotels, restaurants, or attractions to a traveler's current location.
- #29mediumfoundational
29. Minimum Window Substring
Find the shortest substring containing all required characters — Tripadvisor's review-analysis pipeline applies this sliding-window pattern to locate the most concise snippet in a hotel review that covers all required quality keywords for search-result snippets.