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  2. Sentinel node - Wikipedia

    en.wikipedia.org/wiki/Sentinel_node

    Linked list implementations, especially one of a circular, doubly-linked list, can be simplified remarkably using a sentinel node to demarcate the beginning and end of the list. The list starts out with a single node, the sentinel node which has the next and previous pointers point to itself. This condition determines if the list is empty.

  3. Binary tree - Wikipedia

    en.wikipedia.org/wiki/Binary_tree

    In this case, an advantage of using a binary tree is significantly reduced because it is essentially a linked list which time complexity is O(n) (n as the number of nodes) and it has more data space than the linked list due to two pointers per node, while the complexity of O(log 2 n) for data search in a balanced binary tree is normally expected.

  4. Linked list - Wikipedia

    en.wikipedia.org/wiki/Linked_list

    The skip list is a linked list augmented with layers of pointers for quickly jumping over large numbers of elements, and then descending to the next layer. This process continues down to the bottom layer, which is the actual list. A binary tree can be seen as a type of linked list where the elements are themselves linked lists of the same ...

  5. Tree (abstract data type) - Wikipedia

    en.wikipedia.org/wiki/Tree_(abstract_data_type)

    This unsorted tree has non-unique values (e.g., the value 2 existing in different nodes, not in a single node only) and is non-binary (only up to two children nodes per parent node in a binary tree). The root node at the top (with the value 2 here), has no parent as it is the highest in the tree hierarchy.

  6. Tree traversal - Wikipedia

    en.wikipedia.org/wiki/Tree_traversal

    In computer science, tree traversal (also known as tree search and walking the tree) is a form of graph traversal and refers to the process of visiting (e.g. retrieving, updating, or deleting) each node in a tree data structure, exactly once. Such traversals are classified by the order in which the nodes are visited.

  7. List of data structures - Wikipedia

    en.wikipedia.org/wiki/List_of_data_structures

    Linked list also known as a Singly linked list; Association list; Self-organizing list; ... Conc-tree list; Left-child right-sibling binary tree; Order statistic tree;

  8. XOR linked list - Wikipedia

    en.wikipedia.org/wiki/XOR_linked_list

    An XOR linked list is a type of data structure used in computer programming. ... The XOR linked list concept can be generalized to XOR binary search trees. [3] See also

  9. Zipper (data structure) - Wikipedia

    en.wikipedia.org/wiki/Zipper_(data_structure)

    Put another way, a zipper for a linked list consists of an element in that list and instructions on where to put it in a partially-built list. For another example, consider the recursive data structure of a binary tree with nodes that are either sentinel nodes of type 1 {\displaystyle 1} or which are leaves containing a value of some type X ...