PPT-Doubly Linked List Lesson xx

Objectives Doubly linked list concept Node structure Insertion sort Insertion sort program with a doubly linked list Illustration of a Doubly Linked List Head 0 a b c d e 0 Node Structure for a Doubly Linked List Node. Singly linked lists are flexible structures where memory can be allocated in small blocks as needed Also when deleting or inserting nodes from a singly linked list the overhead is re latively low compared to array insertions where array elements ha Unlike singly linked lists where traversal is only one way doubl y linked lists allow traversals in both ways A generic doubly linked list node can be desi gned as typedef struct node void data struct node next struct node prev node node head nod Linked List Linked List Linked List
Linked List List
 Example: An array
The array index is used for accessing and manipulation of array elements  Problems with arrays  Problems with arrays class List { List() { head = new Node; head-next = head-prev = head; } // destructor virtual ~List() { Node *p = head-next; while (p != head) { Node *next = p-next; delete p; 1. Doubly. . Linked . Lists. © 2014 Goodrich, Tamassia, Goldwasser. Presentation for use with the textbook . Data Structures and Algorithms in Java, 6. th. edition. , by M. T. Goodrich, R. Tamassia, and M. H. Goldwasser, Wiley, 2014. Cousin of the Stack. Examples of Queues. Queue. An abstract data type (container class) in which items are entered at one end and removed from the other end. First In First Out (FIFO). No standard queue terminology. Data Structure. Marcus Biel, Software . Craftsman. http://www.marcus-biel.com. Terminology. First of all, let’s have a look at the term “Linked List”. . Why . is Linked List actually called Linked List?. Linking in double direction. A doubly linked list is a linked list in which every node has a next pointer and a back pointer. . A doubly linked list can be traversed in either direction. That is, we can traverse the list starting at the first node or, if a pointer to the last node is given, we can traverse the list starting at the last node.. Hongfei. Yan. Apr. 6, 2016. live.gnome.org/. Dia. draw entity relationship diagrams, . Unified Modeling Language . diagrams, flowcharts, network diagrams, and many other diagrams.. The UML models not only application structure, behavior, and architecture, but also business process and data structure.. R. evised based on textbook author’s notes.. Doubly linked lists. A linked list in which each node contains a data component(s) and two links: . one pointing the next node and . one pointing to the preceding node.. Describe the basic operation and structure of a linked list. * Inserting into the list. * Removing from the list. * Iterating through the list. Write code that implements a . singley. Dummy Nodes, Doubly Linked Lists and Circular Linked Lists Dummy Nodes Plain Linked List Linked List has annoying special cases: InsertAt (index, value) If index = 0 InsertFirst (value) Else Lecture 3:Liked list linear list Concept: Linear list : Each element has a unique successor. Two approaches to implement a linear list Array: Inefficient when element needs to be inserted or deleted. z. immediately after . v. . Specifically, let . w. the be node following . v. . We execute the following steps: . 1. make . z's. . prev. link refer to v . 2. make . z's. next link refer to w . 3. make .