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Grokking the Coding Interview Patterns in JavaScript

Solution: The Number of the Smallest Unoccupied Chair

Explore how to solve the smallest unoccupied chair problem by implementing two min heaps to manage available and occupied chairs based on arrival and leaving times. Understand the algorithm's steps, sorting by arrival, and chair assignment with heap operations for an optimized solution in O(n log n) time complexity.

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Statement

At a party, nn friends, numbered from 00 to n−1n - 1, arrive and leave at different times. There are infinitely many chairs, numbered 00 onwards. Each arriving friend sits on the smallest available chair at that moment.

For example, if chairs ...