10 solar panel activated
11 low battery warning
12 tire one: low air pressure
13 solar panel activated
14 low battery warning
21 solar panel activated
35 solar panel activated
This problem presents a time-ordered stream of alert events such as“solar panel activated,”“low battery warning,”and“tire one: low air pressure.”The key idea is to process the events in sequence and use a simple data structure, often a hash map or array-based grouping, to track repeated alerts, counts, or transitions. Depending on the exact task, sorting by timestamp and scanning once is usually enough to extract the final answer.
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