Coding (Algo)

Required Marker Windows

Algorithm: Sliding window Difficulty: Medium Time: 40 minutes

Goal

Return every start index of a fixed-length excerpt that contains exactly the required marker counts.

What this task practices

Required Marker Windows is a coding (algo) interview exercise that trains prompt interpretation, explicit assumptions, a concrete response, and a clear explanation of tradeoffs. The catalog marks it as medium difficulty. It focuses on Technical Reasoning, Testing, Validation. 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.