Each node does not necessarily follow the previous one physically in the memory. Linked list are dynamic, so the length of list can increase or decrease as necessary. The advantages and disadvantages of using linked lists are given below. On the other hand, since simple linked lists by themselves do not allow random access to the data or any form of efficient indexing, many basic operations-such as obtaining the last node of the list, finding a node that contains a given datum, or locating the place where a new node should be inserted-may require iterating through most or all of the list elements. Linked lists allow insertion and removal of nodes at any point in the list, and allow doing so with a constant number of operations by keeping the link previous to the link being added or removed in memory during list traversal.

The principal benefit of a linked list over a conventional array is that the list elements can be easily inserted or removed without reallocation or reorganization of the entire structure because the data items need not be stored contiguously in memory or on disk, while restructuring an array at run-time is a much more expensive operation. They can be used to implement several other common abstract data typesincluding listsstacksqueuesassociative arraysand S-expressionsthough it is not uncommon to implement those data structures directly without using a linked list as the basis.

Linked lists are among the simplest and most common data structures. Arrays have better cache locality compared to linked lists. Faster access, such as random access, is not feasible. More complex variants add additional links, allowing more efficient insertion or removal of nodes at arbitrary positions.Ī drawback of linked lists is that access time is linear and difficult to pipeline. This structure allows for efficient insertion or removal of elements from any position in the sequence during iteration.

In its most basic form, each node contains: dataand a reference in other words, a link to the next node in the sequence. It is a data structure consisting of a collection of nodes which together represent a sequence. Instead, each element points to the next.

In computer sciencea linked list is a linear collection of data elements, whose order is not given by their physical placement in memory.

Contoh program queue dengan linked list