LeetCode 23: Hard Problem, Clean Solution | JavaScript Walkthrough

n this video, I walk through LeetCode 23: Merge K Sorted Lists using a Divide and Conquer approach in JavaScript.

Instead of using a Min Heap, we iteratively merge pairs of linked lists until only one remains. This method achieves the same efficient time complexity as the heap-based solution — O(N log k) — without needing any additional data structures.

If you're prepping for coding interviews and want a clean, readable way to solve this problem in JavaScript, this one's for you.

What You'll Learn:
✅ How to merge two sorted linked lists
✅ How to scale that to K lists efficiently
✅ Why this method works like merge sort
✅ Time & space complexity breakdown

Chapters:
0:00 - Problem Breakdown
1:55 - Explaining Thought Process
5:18 - Code Solution

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