Double link list
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The document discusses double linked lists. It defines a double linked list as a sequence of elements where each element links to both the next and previous elements. This allows traversal in both directions. The key points covered include pictorial representations, advantages over single linked lists in allowing bidirectional traversal, and common operations like insertion, deletion, and display that involve updating next and previous pointers.
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1) A double linked list is a sequence of elements where each element links to the previous and next elements. This allows traversal in both directions.
2) Each node contains data and pointers to the previous and next nodes. This requires more space than a singly linked list but allows bidirectional traversal.
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b. Inserting and Deleting nodes ✓
c. Linked implementation of a stack (PUSH/POP) ✓
d. Linked implementation of a queue (Insert/Remove) ✓
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• Queue as a circular list (Insert/Remove) ✓
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For more course related material:
https://github.com/ashim888/dataStructureAndAlgorithm/
Personal blog
www.ashimlamichhane.com.np
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Header linked lists
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Algorithm to search a value
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Algorithm for inserting a node
single link list
Applications of Arrays
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B is inserted at index 1 (back) of the circular queue. back is incremented by 1 using modulo arithmetic to handle wrap-around. count is also incremented.
From previous slide: front = 0, back = 1, count = 2 queue
front = 0
7 0
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back = 2 % 8
back = 2 5 2
0 queue[2] = C
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This document discusses linked lists and their implementation in programming languages. It begins by defining a linked list as a sequence of nodes where each node contains a value and a pointer to the next node. It describes the structure of singly linked lists and doubly linked lists. It then covers creating and traversing linked lists in Java using references rather than pointers. Finally, it discusses operations like inserting and deleting nodes from singly linked lists.
Unit 1 linked list
Linked lists allow for dynamic memory allocation by connecting nodes using pointers. There are several types of linked lists including singly linked, doubly linked, and circular linked lists. Singly linked lists use a single pointer to connect nodes in a linear fashion, while doubly linked lists use two pointers to allow traversal in both directions. Circular linked lists connect the last node back to the first to form a circular structure. Common operations on linked lists include insertion, deletion, traversal, and searching which are implemented through manipulating the pointers between nodes.
DLL DATA STRUCT.pptx
This document discusses doubly linked lists. It begins by defining a linked list and its basic structure of nodes connected by pointers. It then describes doubly linked lists, which contain pointers between adjacent nodes in both directions, allowing traversal forward and backward. The document defines the structure of a node in both single and doubly linked lists. It notes the advantages of doubly linked lists in being able to traverse both directions and more efficient deletion, at the cost of using more space per node and requiring an extra pointer.
Linked list
A single linked list is a linear data structure where each node points to the next node in the list via a link. It contains a data field for storing the node's value and a next field containing the address of the next node. A doubly linked list also contains a previous link to allow traversal in both directions. Common operations on linked lists include insertion, deletion, and traversal of the nodes.
lecture 02.2.ppt
The document discusses arrays and linked lists as abstract data types (ADTs). It describes arrays as the simplest data structure, storing elements in sequential memory locations. Linked lists store elements using pointers, with each node containing data and a pointer to the next node. The document outlines common operations on arrays and linked lists like traversal, insertion, deletion, and searching. It also discusses different types of linked lists like singly linked, doubly linked, and circular linked lists.
Deletion from single way linked list and search
The document discusses linked lists and operations on single linked lists such as deletion and searching. It defines a linked list as a linear data structure containing nodes with a data and link part, where the link part contains the address of the next node. It describes how to delete nodes from different positions in a single linked list, including the first, last, and intermediate nodes. It also explains how to perform a linear search to find a required element by traversing the list node by node.
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みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
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Double link list
- 1. presented by: Warda Aziz Huba akhtar Shifa Idrees Amber Wajid Double Linked List
- 2. TOC: • LIST • LINKED LIST • PICTORIAL REPRESENTATION • ADVANTAGES • DISADVANTAGES • DOUBLE LINKED LIST • EXPLANATION • POINTS TO BE NOTED • OPERATIONS • INSERTION • DELETION • DISPLAY • CODE • ADVANTAGES • DISADVANTAGES
- 3. List???
- 4. Definition: A list is a collection of same type of objects. It can be : linked list double linked list circular linked list double and circular linked list
- 5. linked list
- 6. Definition: • A data structure that consists of a sequence of data record such that in each record there is a field that contains a reference of next record in a sequence.
- 7. A sequence of data structures, which are connected together via links. Linked list is a sequence of links which contains items. Each link contains a connection to another link.
- 9. ADVANTAGES 4: No need to define initial size of the list 3: Addition/removal from the mi ddle 1: Stacks and queues can be impleme nted 2: Insertion and deletion is faster
- 10. Disadvantages More memory than arrays! sequential order, read from the beginning time to access individual elements one way direction reverse traversing!!!
- 12. Definition: Double linked list is a sequence of elements in which every element has links to its previous element and next element in the sequence.. Or Double linked list is a two-way list because one can move in either from left to right or fr om right to left.
- 13. Explanation : Every node has link to its previous node and next node . So , we can traverse forward by using next f ield and can traverse backward by using previous field. Every node in double linked list contains thr ee fields.
- 14. link 1 data link2 value of that node Points to a previous node points to next node
- 16. P O I N T S T O B E N O T E D : In double linked list ,the first node must be always pointed by HEAD. Always the previous field of the first node must be NULL. Always the next field of the last node must be NULL.
- 17. Operations: In a double linked list , we perform the following operations… 1. Insertion 2. Deletion 3. Display
- 18. Insertion: In double linked list ,the insertion operation ca n be performed in three ways as follows… 1. Inserting At Beginning of the list 2. Inserting At End of the List 3. Inserting At Specific Location in the list
- 19. Deletion : In double linked list ,the deletion operation ca n be performed in three ways as follows… 1. Deletion At Beginning of the list 2. Deletion At End of the List 3. Deletion At Specific Location in the list
- 20. Displaying: Double linked list can be Displayed by writing a Piece of Code in your Program..
- 21. ADVANTAGES:- 1) We can traverse in both direction i.e from starting to end & as well as from end to starti ng. 2) It is easy to reverse the linked list. 3) If we are at a node, the we can go at any node. But in linked list , it is not possible to reach the previous node.
- 22. Disadvantages: 1) It requires more space per space per node because extra field is required for pointer to previous node. 2) Insertion and Deletion take more time than linear linked list because more pointer operations are required than linear linked list.