Linked Lists and its application advantages over arrays

VISHALYADAV809458 6 views 12 slides Mar 20, 2025
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About This Presentation

Here are 10 topics related to linked lists that you can explore:

1. **Introduction to Linked Lists**
- Understanding the concept of a linked list, its structure (nodes, pointers), and how it differs from arrays.

2. **Singly Linked List**
- A basic linked list where each node points to th...


Slide Content

Linked Lists An overview of linked list concepts and operations

Introduction This presentation explores the fundamental concepts of linked lists, detailing their structures, types, and common operations. It covers singly linked lists, doubly linked lists, and techniques for traversal and manipulation, offering a comprehensive understanding of how linked lists function and their advantages over traditional arrays.

Singly Linked List 01

Basic structure and implementation A singly linked list consists of nodes, where each node contains data and a pointer to the next node. This allows dynamic memory allocation and efficient insertions or deletions as compared to arrays. Implementations typically involve creating a node structure and managing the head pointer to access the list.

Traversal techniques Traversal of a singly linked list involves starting from the head and visiting each node sequentially until reaching the end (null pointer). Common strategies include iterative (using a loop) or recursive approaches, allowing access to elements for operations such as searching or printing all values in the list.

Common operations: insertion and deletion In a singly linked list, insertion can occur at the head, tail, or middle. To insert a node, adjust pointers of adjacent nodes to include the new node, ensuring to manage the head pointer if inserting at the beginning. Deletion involves adjusting pointers to remove a specified node while keeping the remaining list intact. Proper handling is crucial, especially when deleting the head node or the last node.

Doubly Linked List 02

Structure and pointers A doubly linked list enhances the singly linked list's structure by allowing each node to point to both its next and previous nodes. This bidirectional capability facilitates easier navigation and manipulation of the list, such as insertions and deletions at both ends without needing a traversal from the head. Each node consists of three components: data, a pointer to the next node, and a pointer to the previous node.

Advantages over singly linked lists Doubly linked lists offer several advantages: they allow traversal in both directions, making it easier to go backward and forward. This is particularly beneficial for certain operations like deletions, where knowing the previous node makes the process simpler. They also enable more flexible operations, as insertion and deletion can be performed more efficiently at both ends of the list, reducing the need for traversing the entire list.

Operations: insertion and deletion from both ends In a doubly linked list, inserting at the head requires updating the head pointer and adjusting pointers of the new node to link with the existing nodes. For tail insertions, point the last node's next pointer to the new node and update the new node's previous pointer accordingly. Deletion from either end involves similarly adjusting pointers to exclude a node, with reduced complexity compared to singly linked lists due to the availability of previous pointers.

Conclusions Linked lists, particularly singly and doubly linked lists, offer dynamic data structure capabilities essential for various applications. Understanding their operations, advantages, and structural differences is crucial for effective implementation in programming and algorithm design, enhancing memory efficiency and operational flexibility.

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