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23. Merge k Sorted Lists

Merge k sorted linked lists and return it as one sorted list. Analyze and describe its complexity.

Example:

Input:
[
  1->4->5,
  1->3->4,
  2->6
]
Output: 1->1->2->3->4->4->5->6

Difficulty:

Hard

Lock:

Normal

Company:

Adobe Airbnb Alibaba Amazon Apple Atlassian Audible Bloomberg Box ByteDance Cisco Cohesity Cruise Automation Dropbox eBay Facebook Google Indeed IXL LinkedIn Lyft Mathworks Microsoft Oracle Paypal Salesforce SAP Tableau Tencent Twitter Uber VMware Walmart Labs Wish Yahoo Yandex Zillow

Solution(Chinese):

LEETCODE 23. Merge k Sorted Lists 解题思路分析