This is a premium problem. We're working on making it available for free soon.
Explore Free ProblemsSolutions for this premium problem will be available for free soon.
Browse Free ProblemsWatch expert explanations and walkthroughs
Practice problems asked by these companies to ace your technical interviews.
Explore More ProblemsJot down your thoughts, approach, and key learnings
Yes, design-style problems like this appear in technical interviews at major companies. They test your ability to combine data structures, string manipulation, and efficient range querying.
Ordered structures such as TreeMap, ordered sets, or sorted arrays work best. They allow efficient insertion and quick range queries using timestamp comparisons.
A common optimal approach uses an ordered data structure like a TreeMap or a sorted list. By adjusting timestamps according to the requested granularity, you can perform efficient range queries to return the matching log IDs.
Granularity determines which part of the timestamp is considered during retrieval. You truncate the timestamp to the required prefix (such as year or hour) and expand the remaining fields with minimum and maximum values to create a valid search range.