Examples of using Priority queue in English and their translations into Bulgarian
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Strict Priority Queue(SPQ).
A better implementation of a priority queue.
A priority queue is often considered to be a"container data structure".
Adjusting the priority queue.
There are a variety of simple, usually inefficient, ways to implement a priority queue.
Creation of the priority queue.
A priority queue(also known as the fringe) is used to keep track of unexplored routes;
Implementation of priority queue.
In a priority queue, an element with high priority is served before an element with low priority. .
They provide an analogy to help one understand what a priority queue is.
Typical implementations of A* use a priority queue to perform the repeated selection of minimum(estimated) cost nodes to expand.
A standard approach here is to check if a node about to be added already appears in the priority queue.
For example, if one has an O(n log log n) sort algorithm,one can create a priority queue with O(1) pulling and O(log log n) insertion.
This sorting methodis equivalent to the following sorting algorithms: A sorting algorithm can also be used to implement a priority queue.
The Standard Template Library(STL), part of the C++ 1998 standard,specifies"priority_queue" as one of the STL container adaptor class templates.
The semantics of priority queues naturally suggest a sorting method:insert all the elements to be sorted into a priority queue, and sequentially remove them;
This is actually the procedure used by several sorting algorithms,once the layer of abstraction provided by the priority queue is removed.
A priority queue is an abstracted data type which is like a queue or stack data structure, but where additionally each element has a"priority" associated with it.
Network devices use First-In-First-Out queue, Weighted fair queue, Priority queue and Custom queue. .
The priority queue(also known as the fringe) is used to keep track of unexplored routes, the one for which a lower bound on the total path length is smallest is given highest priority. .
If these references are being kept then it can be important that the same node doesn't appear in the priority queue more than once(each entry corresponding to a different path to the node, and each with a different cost).
The semantics of priority queues naturally suggest a sorting method:insert all the elements to be sorted into a priority queue, and sequentially remove them; they will come out in sorted order.
If these references are being kept then it can be important that the same node doesn't appear in the priority queue more than once(each entry corresponding to a different path to the node, and each with a different cost).
A priority queue(also known as the fringe) is used to keep track of unexplored routes; the one for which the estimate(a lower bound in the case of A*) of the total path length is smallest is given highest priority. .
If these references are being kept then it can be important that the same node doesn't appear in the priority queue more than once(each entry corresponding to a different path to the node, and each with a different cost).
A standard binary heap based priority queue does not directly support the operation of searching for one of its elements, but it can be augmented with a hash table that maps elements to their position in the heap, allowing this decrease-priority operation to be performed in logarithmic time.
That is, if there is a sorting algorithm which can sort in O(S) time per key, where S is some function of n and word size,then one can use the given procedure to create a priority queue where pulling the highest-priority element is O(1) time, and inserting new elements(and deleting elements) is O(S) time.
Specifically, Thorup says: We present a general deterministic linear space reduction from priority queues to sorting implying that if we can sort up to n keys in S(n) time per key,then there is a priority queue supporting delete and insert in O(S(n)) time and find-min in constant time.