Coding·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

Low

Last asked

2025-12-22

Stage

onsite-coding · phone-screen