That depends on the linking rules.
Lymph nodes are located throughout the entire body, linked by the lymphatic vessels.
A linked list is a collection of items, often nodes, that are sequentially linked by some kind of index or pointer contained within each item.
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.
It is true that a linked list is a collection of nodes.And a node contains data part and a link part which contains address of the next node.
the purpose of avail list in link list is to use deleted nodes again
for (node=head; node!=null; node=node->next) printnode(node);
When creating linked lists (singly- or doubly-linked), the elements in the list are known as nodes. A node class defines how these nodes work. Generally, a node will contain a member pointer to the data it represents (which is typically an abstract data type rather than a concrete data class), as well as a pointer to the next node in the list, and the previous node if it is doubly-linked. The list itself maintains a member pointer to the head node in the list, and the tail node if doubly-linked. In this way, the list is only concerned with the nodes, not the data within those nodes. By the same token the nodes are only concerned with their nearest neighbouring nodes, not the list, nor the data they contain. Similarly, the data is only concerned with itself and other data, it is not concerned with the fact it may be part of a list or a node. All work concerning nodes can then be delegated to the nodes themselves, while any work relating to the data can be delegated to the data. Thus each class plays a small but clearly defined role within the list; no class does any more than it has to, which greatly simplifies the list interface.
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.
Hypermedia DB is an approach to data management that organized data as a network of nodes linked in any pattern the user specifies.
int numNodes = 0; Node current = root; // if root is null, the number of nodes is 0 if(current != null) { // if root is not null, we have at least one node numNodes = 1; // count all nodes while(current .next != null) { ++numNodes; current = current.next; } }
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.
Traverse the nodes from the beginning to the end, counting the nodes as you go. This takes linear time O(n) to count n nodes. A more efficient approach that enables constant-time O(1) counting is to encapsulate the list along with a node counter. Increment the counter each time a node is inserted and decrement when a node is extracted.