Search⌘ K
AI Features
Home
Courses
Data Structures for Coding Interviews in Java

Solution: Middle of the Linked List

Explore methods to find the middle node in a singly linked list using Java. Understand two key techniques: calculating list length or using fast and slow pointers. Learn how each approach works step-by-step, and review their time and space efficiency. This lesson helps you implement and analyze solutions for middle node retrieval in linked lists.

We'll cover the following...

Statement

Given the head of a singly linked list, return the middle node of the linked list.

If there are two middle nodes, return the second middle node. This happens when the length of the list is even, and the second middle node occurs at length2\frac {length}{2}. Otherwise, if the length of the list is odd, the middle node occurs at length2+1\frac {length}{2}+1 ...