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Grokking the Coding Interview Patterns in JavaScript

Solution: The Number of the Smallest Unoccupied Chair

Explore how to efficiently assign the smallest unoccupied chair to arriving friends using two min heaps. Understand the process of sorting arrivals, managing free and occupied chairs, and returning the target friend's chair with optimized time and space 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 ...