Que- Advantage and Disadvantage of singly Linked list and Doubly Linked list SINGLY LINKED LIST * ADVANTAGE:-1) Insertions and Deletions can be done easily. Linked list is a dynamic data structure so it can grow and shrink at runtime by allocating and deallocating memeory. Dynamic Data Structure. Disadvantages – Disadvantages over singly linked list 1) Every node of DLL Require extra space for an previous pointer. The disadvantages of a singly linked list are any of the attributes that are not advantages. 2) All operations require an extra pointer previous to be maintained. 3) It space is not wasted as we can get space according to our requirements. The ‘data’ field stores actual piece of information and ‘link’ field is used to point to next node. Advantages and disadvantages of Doubly Linked List over Singly Linked List. Figure 3: Diagram of singly linked list structure. So there is no need to give initial size of linked list. For example, in insertion, we need to modify previous pointers together with next pointers. 4) Its size is not fixed. 2) It does not need movement of elements for insertion and deletion. Dynamic size – The size of the linked list can be infinite, that is , as much as the CPU can allocate for a process. There are various merits and demerits of linked list that I have shared below. Advantages of Linked lists. It is possible to implement DLL with single pointer though (See this and this). Note that there are many types of linked lists such as a singly and doubly linked lists, but for now we will focus on singly linked lists. As shown in Figure 3, a singly linked list is composed of a head and a set of nodes. Insertion and deletion in a DLL are much faster. Introduction to Singly linked list : A singly linked list is a set of nodes where each node has two fields ‘data’ and ‘link’. 2. Advantages – A DLL can be traversed in both ways. They use more memory than arrays because of the storage used by their pointers. To explain how a singly linked list works, I must first define a pointer. Advantages and Disadvantages of Linked List Advantages of Linked List. In Disadvantages Doubly linked list occupy more space and often more operations are required for the similar tasks as compared to singly linked lists. When the previous node of the node is known, it’s easier to insert and delete because we don’t have to traverse the whole list from the head node. Difficulties arise in linked lists when it comes to reverse traversing. Few disadvantages of linked lists are : 1. As linked lists can grow or shrink in size, the size of the linked list keeps on changing with every insertion/deletion. a doubly linked list needs more operations while inserting or deleting and it needs more space (to store the extra pointer). Must first define a pointer it needs more space ( to store the extra pointer ), I first! 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