The answer
JavaScript lacks built-in implementations for Heaps (Priority Queues), Deques, and Balanced Binary Search Trees.
JavaScript for DSA: Is it a Good Idea?
What data structures are missing in JavaScript?
More FAQs in JavaScript for DSA: Is it a Good Idea?
Yes, absolutely. Many frontend and full-stack engineers clear top-tier company interviews using JavaScript for their coding rounds.
You either have to write the Heap class from scratch during the interview, or ask the interviewer if you can assume a theoretical Heap implementation.
Modern JavaScript engines (like V8) are highly optimized and often execute faster than Python for many algorithmic tasks.
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