The LeetCode Beginner's Guide

Stepping up the difficulty by a small amount, this problem will introduce a new data structure, the linked list. If you are not familiar with the linked list data structure, do not worry, you can always skip this problem, but we encourage you to try to solve 876. Middle of The Linked List on your own. If you feel stuck, check out the solution article for the problem or come back here to view the video solution. The video solution will introduce the linked list data structure, and the Explore Card Track (in chapter 3 of this guide) will guide you through the necessary material you need to understand this data structure well!