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Grokking the Coding Interview Patterns in Go

Solution: Merge K Sorted Lists

Explore how to merge multiple sorted linked lists into a single sorted list by applying the K-way merge pattern. Understand the divide-and-conquer method that pairs and merges lists progressively, using two pointers and a dummy head for streamlined list construction. Learn to evaluate the time complexity of O(n log k) and constant space usage for an optimal solution.

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Statement

You are given an array, lists, containing k singly linked lists. Each of these linked lists is individually sorted in ascending order.

Your task is to merge all k linked lists into a single sorted linked list in ascending order and return the merged list.

Constraints:

  • k ==== lists.length

  • ...