AceStack AI

Coding (Algo)

Summarize Event Frequencies

Algorithm: Hash map Difficulty: Easy Time: 25 minutes

Goal

Return one value and count pair for every distinct event code in ascending numeric order.

What this task practices

Summarize Event Frequencies 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 easy 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.

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