![]() If yes, then move prev until it reaches the last node. ![]() If curr is not the first node, we check if it is the last node in the list.After prev reaches the last node, set head = head -> next and prev -> next = head. Condition to check this is (curr -> next = head). Circular lists are useful in applications to repeatedly go around the list.If the node to be deleted is neither the first node nor the last node, then set prev -> next = curr -> next and delete curr.īelow is the implementation for the above approach.Set prev -> next = head and delete the node curr by free(curr). For example, when multiple applications are running on a PC, it is common for the operating system to put the running applications on a list and then cycle through them, giving each of them a slice of time to execute, and then making them wait while the CPU is given to another application. It is possible for the code to go into an infinite loop if it is not handled carefully.Reversing a circular list is more complicated than singly or doubly reversing a circular list.Compared to singly linked lists, circular lists are more complex.Circular Doubly Linked Lists are used for the implementation of advanced data structures like the Fibonacci Heap.It is convenient for the operating system to use a circular list so that when it reaches the end of the list it can cycle around to the front of the list. A circular linked list can be used to organize multiple running applications on an operating system.Multiplayer games use this to give each player a chance to play.It is harder to find the end of the list and control the loop. Nodes are traversed quickly from the first to the last.In this article, we have explored Circular Doubly Linked List and operations that can be performed on it.Any node can be set as the starting point.A node always points to another node, so NULL assignment is not necessary.These applications are iterated over by the OS. It is a combination to two Data Structures namely Circular Linked List and Doubly Linked List. Introduction to Circular Doubly Linked Listġ) Introduction to Circular Doubly Linked ListĬircular Doubly Linked List is a linear data structure which consists of nodes.
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