Prep RoomSign inStart free
Code RoomMedian calculation even-length array
MediumPrep Room Coding #4011

Median calculation even-length array

Vibe & agenticAlgorithms & data structuresMid–Senior~15 min

You asked an AI assistant for a TypeScript function to compute the median latency from an array of millisecond samples, for a metrics dashboard. It produced:

It returns 30 for `[10, 20, 30, 40, 50]`. What are the correctness and side-effect bugs?

Implement
median_latency_ms(samples: list[int]) → float
Examples
in[[10,20,30,40,50]]out30
in[[10,20,30,40]]out25
in[[]]out-1
What a strong answer looks like

Treat the AI’s output as a draft to verify, not an answer to trust. Name the specific flaw and the input that triggers it, say how you’d catch it (tests, edge cases, reading critically), and how you’d re-prompt or decompose to get it right.

0:00 of about 15 min

Vibe & agentic: describe the solution in plain language (or narrate it) and the coach grades your approach.

Which questions mattered is sealed until you submit. Telling you now would just be handing over the edge cases.