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Coding·60 minMembers

Service Load Factor / Referral Count

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Given a dependency (or referral) DAG, compute for each node the number of unique nodes that directly or indirectly depend on it. Robinhood's most frequent coding screen; shows up under several names (...

SWE
graph
dfs
topological-sort
hashmap
medium
Frequency
High
Last asked
2026-09-18
Stage
phone-screen · onsite-coding

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