If the tail node points "forwards" to the head node, the list is circular.
A doubly linked list is a linked list in which each node knows where both of its neighbors are.A circular linked list is a linked list in which the "tail" of the list is linked to the "root". (Note that both the tail and root of the list are undefined/arbitrary in a circular linked list)Doubly linked lists are actually not necessarily related to circular linked list (aside from both being based on a linked list structure). In fact, you can have a circular doubly linked list, where each node knows where both of its neighbors are andwhere the list wraps around to connect to itself.
A heterogeneous linked list is a linked list where each node can store different types of data. This is different from a homogeneous linked list where all nodes store the same type of data. Heterogeneous linked lists can be useful for scenarios where you need to store multiple types of data in a single list.
In linked list, there are various operations in linked list that you can perform on linked list, eg: adding new elements, deleting elements, getting the first element, getting the next element after an element, any many others.
Heterogeneous Linked List is a linked list data-structure that contains or is capable of storing data for different datatypes.void pointer is basically used in these types of linked list as we are not sure of which type of data needs to be stored
Add another pointer to the nodes for the previous node: struct node { struct node *next; struct node *previous; void *data; }; typedef struct node node; Then change the logic for insertion and removal to make sure you set the previous pointer as well as the next one.
A linked list is circular if the tail of the list points to the head. The easiest way to check this is to check whether the pointer of the tail is a null pointer. If it is, then the list is not circular.
LINEAR STRAIGHT CIRCULAR CURVED
A doubly linked list is a linked list in which each node knows where both of its neighbors are.A circular linked list is a linked list in which the "tail" of the list is linked to the "root". (Note that both the tail and root of the list are undefined/arbitrary in a circular linked list)Doubly linked lists are actually not necessarily related to circular linked list (aside from both being based on a linked list structure). In fact, you can have a circular doubly linked list, where each node knows where both of its neighbors are andwhere the list wraps around to connect to itself.
You'll need to use a doubly-linked circular list, since otherwise when you pop off the tail element you'll need to whizz all the way round the list to find its predecessor. See the links section for an implementation of a doubly-linked circular list.
The Josephus problem is a problem to locate the place for the last survivour. It shows the power of the circular linked list over the singly linked lists.
if the last node contains the address of head node instead of null then it is a circular linked llist...
image is shared
You may only traverse the linked list in one direction, and unless the linked list is also circular, you must always start from the root node and walk through each additional node until you find the desired value.
write pseudocode for link list
In a circular linked list every node is connected to another node. In a non-circular linked list. There are definitely starting and ending nodes are lacking an incoming and outgoing link, respectively.
Pseudocode for detecting loops in a linked list: // keep track of which linked list nodes we've visited set nodesVisited // our list linkedlist list // current working node node current = list.root while current.next is not null if nodesVisited contains current.next we found a loop! else nodesVisited.add( current ) current = current.next // if we get here without finding a loop, then there are no loops Complete Working code And illustrative pictures can be found here about linked lists http://www.programmerinterview.com/index.php/data-structures/how-to-find-if-a-linked-list-is-circular-or-has-a-cycle-or-it-ends/
circular linked list is type of linked list used in data structure where address of 1st node is stored in the link part of last node data1link1 ................... datanlinkn address1 here linkn=adress1 (node1) (noden) pratima patwa