![]() If the Linked list are empty value of Head will be null.īasic implementation of Linked List in Python is: It is necessary to state that “Head” pointer is not another node but a pointer to the first element of the Linked list. The initial pointer in the Linked list is called Head. Every node contains a key or data element with an extra pointer pointing to the next element in the list. Every element is connected to the subsequent node through a pointer.Įvery element present in the Linked list is known as Node. ![]() Different from general Arrays, the Linked list data structure does not have a contiguous memory structure. Linked list is a linear data structure in which each node is an object. So what exactly is a doubly linked list? Before that let’s have a quick glance at Linked List: What is Linked List? But have you ever thought about how is it even possible? I happen to have an answer this time! Undo and Redo functionality is one of the most important applications of a doubly linked list. ![]() Ctrl+Z, can you even survive a day without these keys? Well, Apparently not, undo and redo features are one of the used functionalities in computer engineering.
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