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  2. Stack (abstract data type) - Wikipedia

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

    A stack can be easily implemented either through an array or a linked list, as it is merely a special case of a list. [19] In either case, what identifies the data structure as a stack is not the implementation but the interface: the user is only allowed to pop or push items onto the array or linked list, with few other helper operations.

  3. Abstract data type - Wikipedia

    en.wikipedia.org/wiki/Abstract_data_type

    Other authors disagree, arguing that a stack ADT is the same whether it is implemented with a linked list or an array, despite the difference in operation costs, and that an ADT specification should be independent of implementation.

  4. Linked list - Wikipedia

    en.wikipedia.org/wiki/Linked_list

    In a doubly linked list, one can insert or delete a node in a constant number of operations given only that node's address. To do the same in a singly linked list, one must have the address of the pointer to that node, which is either the handle for the whole list (in case of the first node) or the link field in the previous node. Some ...

  5. Purely functional data structure - Wikipedia

    en.wikipedia.org/wiki/Purely_functional_data...

    A data structure is never inherently functional. For example, a stack can be implemented as a singly-linked list.This implementation is purely functional as long as the only operations on the stack return a new stack without altering the old stack.

  6. Parent pointer tree - Wikipedia

    en.wikipedia.org/wiki/Parent_pointer_tree

    When used to implement a set of stacks, the structure is called a spaghetti stack, cactus stack or saguaro stack (after the saguaro, a kind of cactus). [1] Parent pointer trees are also used as disjoint-set data structures. The structure can be regarded as a set of singly linked lists that share part of their structure, in particular, their ...

  7. Linked data structure - Wikipedia

    en.wikipedia.org/wiki/Linked_data_structure

    A linked list is a collection of structures ordered not by their physical placement in memory but by logical links that are stored as part of the data in the structure itself. It is not necessary that it should be stored in the adjacent memory locations.

  8. Double-ended queue - Wikipedia

    en.wikipedia.org/wiki/Double-ended_queue

    A double-ended queue is represented as a sextuple (len_front, front, tail_front, len_rear, rear, tail_rear) where front is a linked list which contains the front of the queue of length len_front. Similarly, rear is a linked list which represents the reverse of the rear of the queue, of length len_rear.

  9. Priority queue - Wikipedia

    en.wikipedia.org/wiki/Priority_queue

    A priority queue is an abstract data type like a list or a map; just as a list can be implemented with a linked list or with an array, a priority queue can be implemented with a heap or another method such as an ordered array.