Count required meeting rooms: Back-to-back meetings

What this Python exercise asks you to practise

This scenario tests count required meeting rooms. It belongs to the Core Data Structures: Stacks, Queues, Linked Lists, Heaps, and Intervals roadmap and uses the intervals · min-heap · company screen pattern.

Choosing structures by operations, monotonic reasoning, priority queues, and interval processing.

Pattern relevance

This exercise strengthens intervals · min-heap · company screen. Be ready to explain the input, the rule, the boundary cases, and why the chosen approach is appropriate.