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  2. Queue (abstract data type) - Wikipedia

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

    A bounded queue is a queue limited to a fixed number of items. [1] There are several efficient implementations of FIFO queues. An efficient implementation is one that can perform the operations—en-queuing and de-queuing—in O(1) time. Linked list. A doubly linked list has O(1) insertion and deletion at both ends, so it is a natural choice ...

  3. Array Based Queuing Locks - Wikipedia

    en.wikipedia.org/wiki/Array_Based_Queuing_Locks

    The elements of the array are all initialized to 0 except the first element which is takes the value 1, thus ensuring successful lock acquisition by the first thread in the queue. On a lock release, the hold is passed to the next thread in queue by setting the next element of the array to 1. The requests are granted to the threads in FIFO ordering.

  4. Dynamic array - Wikipedia

    en.wikipedia.org/wiki/Dynamic_array

    Smalltalk's OrderedCollection is a dynamic array with dynamic start and end-index, making the removal of the first element also O(1). Python's list datatype implementation is a dynamic array the growth pattern of which is: 0, 4, 8, 16, 24, 32, 40, 52, 64, 76, ... [29] Delphi and D implement dynamic arrays at the language's core.

  5. Calendar queue - Wikipedia

    en.wikipedia.org/wiki/Calendar_queue

    Each array element contains one pointer that is the head of the corresponding linked list. If the array name is "month" then month[11] is a pointer to the list of events scheduled for the 12th month of the year (the vector index starts from 0). The complete calendar thus consists of an array of 12 pointers and a collection of up to 12 linked lists.

  6. Double-ended queue - Wikipedia

    en.wikipedia.org/wiki/Double-ended_queue

    The dynamic array approach uses a variant of a dynamic array that can grow from both ends, sometimes called array deques. These array deques have all the properties of a dynamic array, such as constant-time random access , good locality of reference , and inefficient insertion/removal in the middle, with the addition of amortized constant-time ...

  7. Bucket queue - Wikipedia

    en.wikipedia.org/wiki/Bucket_queue

    The bucket queue is the priority-queue analogue of pigeonhole sort (also called bucket sort), a sorting algorithm that places elements into buckets indexed by their priorities and then concatenates the buckets. Using a bucket queue as the priority queue in a selection sort gives a form of the pigeonhole sort algorithm. [2]

  8. Interpolation sort - Wikipedia

    en.wikipedia.org/wiki/Interpolation_sort

    2.3 Histogram sort implementation. 3 Variant. ... Download as PDF; Printable version; ... Stack, queue, associative array, and tree structure can be implemented as ...

  9. Binary heap - Wikipedia

    en.wikipedia.org/wiki/Binary_heap

    This implementation is used in the heapsort algorithm which reuses the space allocated to the input array to store the heap (i.e. the algorithm is done in-place). This implementation is also useful as a Priority queue. When a dynamic array is used, insertion of an unbounded number of items is possible.