Data Structures and Algorithms The Complete Masterclass - Reversing Linked List - I

The video tutorial discusses the importance of reversing a linked list, a common topic in data structures and algorithms, especially relevant for interviews. It compares singly and doubly linked lists, highlighting the challenges of reversing a singly linked list due to the lack of a previous node reference. Initial approaches, such as converting to a list, are explored but found inefficient. An optimized approach using three pointers (preceding, current, succeeding) is detailed, achieving O(N) complexity. The tutorial provides a step-by-step explanation of this method, emphasizing understanding and practical application.

What is a linked list and how does it differ from an array?

Why is reversing a linked list considered an important topic in data structures?

What are the key differences between a singly linked list and a doubly linked list?

What is the significance of the 'next' pointer in a linked list during the reversal process?

Explain the process of reversing a singly linked list.

What challenges arise when trying to reverse a singly linked list compared to a doubly linked list?

What is the time complexity of reversing a linked list and why?

Describe the approach to reverse a linked list using three pointers: previous, current, and next.

Explain how to handle the head node when reversing a linked list.

How can you implement the reversal of a linked list in a single pass?