Software Engineer signal: line sweep + interval merge in a notification delivery context. This is a ProdMatch-owned software engineer drill, framed as a March 2026 Yellow.ai Messaging Platform simulation, not a copied platform question.
Company context
Yellow.ai · Messaging Platform
Freshness
March 2026
Product surface
notification delivery
ProdMatch interview simulation based on product-team patterns; not a claim of a real company question.
Plan capacity for notification delivery. Given reservation intervals with requested units, return the minimum capacity needed and all time ranges where capacity crosses a critical threshold.
Input
Output
Constraints
Concepts
[[1,4,3],[2,5,4]], threshold=6 -> peak=7, hot=[[2,4]]
Try framing your own approach first. The 30 seconds you think before peeking is where learning happens.
Reveal the approach first.
Your rating tunes when this problem shows up again.