Leetcode Problem 855. Exam Room

855. Exam Room

Leetcode Solutions

Initialize a priority queue that orders gaps by their size and starting position.
When seating a student, pop the largest gap from the queue.
Place the student in the middle of the gap (or at the start/end if the gap includes the first/last seat).
Push the new gaps created by seating the student back into the queue.
When a student leaves, remove the corresponding seat and merge adjacent gaps if necessary before pushing them back into the queue.

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