eBay Coding Interview Questions
25 eBay coding interview problems with full optimal solutions — 8 easy, 12 medium, 5 hard. Every problem ships with multiple approaches (brute-force first, then the optimal), complexity tables for each, company-specific tips on what an eBay interviewer values, and a FAQ section.
Showing 1 problem of 25
- #23hardfrequently asked
23. Merge K Sorted Lists
eBay's search ranking system merges sorted result streams from k independent indices — seller inventory, product catalog, auction listings — into a single ordered result set. Merge K Sorted Lists is the algorithmic core. It elevates the two-list merge (LC 21) to a k-way problem requiring a min-heap, which eBay uses to separate candidates who truly understand priority queue mechanics.
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