Threshold Alerts

Problem Overview

• Count alerts when the trailing average of calls over precedingMinutes exceeds alertThreshold at each minute.
• Inputs: precedingMinutes, alertThreshold, and numCalls per minute; Output: total alert count; start evaluating only after enough data; constraints up to 1e5.
• Real-world context: a compliance system monitoring inbound and outbound call volumes over time.
• This coding interview question/problem comes from Goldman interviews.