#data structure design

Hit counter over a sliding time window
CodingUber
▲ 00 solutions
Playlist with add, remove and shuffle
CodingNetflix
▲ 00 solutions
Concurrent latency percentile tracker
CodingNetflix
▲ 00 solutions
Command executor with undo
CodingNetflix
▲ 00 solutions
Deduplicate titles across a home page's visible rows
CodingNetflix
▲ 00 solutions
Rotating title picker for a home-page billboard
CodingNetflix
▲ 00 solutions
Priority task executor with duplicate task ids
CodingSnowflake
▲ 00 solutions
Throne inheritance without an initial king
CodingSnowflake
▲ 00 solutions
Insert, delete and get random in O(1) with duplicates
CodingSnowflake
▲ 00 solutions
Log manager that evicts the least important logs
CodingGoogle
▲ 00 solutions
Autocomplete with a trie
CodingGoogle
▲ 00 solutions
Allocate servers from a pool of mixed node types
CodingGoogle
▲ 00 solutions
Many timers on top of one underlying timer
CodingGoogle
▲ 00 solutions
Design a hit counter
CodingGoogle
▲ 00 solutions
Logger that reports its top K messages
CodingGoogle
▲ 00 solutions
Waitlist with top-K and bottom-K queries
CodingGoogle
▲ 00 solutions
Implement a trie (prefix tree)
CodingAnthropic
▲ 00 solutions
Min stack
CodingAnthropic
▲ 00 solutions
Snapshot set with frozen insertion-order iterators
CodingHardDatabricksMicrosoftOpenAI
▲ 01 solution
Average speed at a point on a road with overlapping reports
CodingHardWaymo
▲ 01 solution