Coding (Platform)
express + react · Easy · response projection
A browser and API disagree at the stable cross-layer ordering boundary. A results table can be sorted by score or name. Equal values currently jump between renders and the live-region summary describes the requested direction rather than the order actually applied.
Repair the shared browser-to-service contract. Return a stable ordered ID list and one concise announcement for the applied sort.
Stable cross-layer ordering is a coding (platform) interview exercise that trains prompt interpretation, explicit assumptions, a concrete response, and a clear explanation of tradeoffs. The catalog marks it as easy difficulty. It focuses on State Modeling, Regression Testing, Technical Reasoning. The signed-in workspace provides the tools for the round and evaluates the attempt against task-specific criteria. Reference solutions, hidden checks, evaluator instructions, and candidate work remain private.