Solution: Merge K Sorted Lists
Explore how to merge k sorted linked lists into a single sorted list using a divide-and-conquer approach. Understand the pairwise merging process, the role of pointers, and the use of a dummy node to simplify list construction. Learn how to implement the solution efficiently, analyze its O(n log k) time complexity, and use constant space. This lesson helps you master an essential pattern for solving K-way merge problems in coding interviews.
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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:
klists.lengthklists[i].length...