How would you code a JavaScript function to identify the top k most frequent elements in an array?

Hard Difficulty

Hard questions require advanced understanding and critical thinking. Here, your problem-solving skills are key, as these questions often involve complex scenarios needing in-depth analysis and well-structured responses.

Javascript question

JavaScript questions test your proficiency with this versatile programming language. Demonstrate your understanding of language fundamentals, asynchronous programming, frameworks, and how you build dynamic web applications.

Here's a Hint

Consider using a hash map to count frequencies, then implement a sorting method or min-heap to efficiently find the top k elements without iterating through the entire frequency map multiple times.