RipplingCoding·60 minMembers
Article Voting / Top-K
Members only
Design an in-memory article voting tracker. Support article creation, user upvotes/downvotes, each user's most recent three opinion flips, and global top-K by score.
SWE
oop-design
hashmap
queue
top-k
medium
Frequency
Medium
Last asked
2026-05-25
Stage
onsite-coding · phone-screen
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