A hard Python interview practice problem on DataDriven. Write and execute real python code with instant grading.

Domain

Python

Difficulty

hard

Seniority

L5

Problem

Given meetings as a list of [start, end] intervals, return the minimum number of rooms needed so no two meetings in the same room overlap. Intervals are half-open [start, end): a meeting ending at t does not conflict with one starting at t.

Summary

Meetings overlap on the calendar. Rooms are limited.

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