Click or drag to resize

FibonacciHeapTElement Class

Implementation of a Fibonacci heap. See: http://en.wikipedia.org/wiki/Fibonacci_heap for details about the Fibonacci heap. A Fibonacci heap is a heap with on average one of the fastest characteristics of all known heap datastructures to date. However, the efficiency is expressed as 'amortized' time, which means it's averaged: the fastest operations are a little slower as some other operations can be rather time consuming in some situations. There are cases where a Binomial heap (http://en.wikipedia.org/wiki/Binomial_heap) would be more efficient, however as in general the Fibonacci heap performs more efficiently, this library contains an implementation of Fibonacci heap instead of a Binomial heap.

Some time ago another variant (actually two variants) of the Fibonacci heap, the 'Relaxed' Fibonacci Heap has been proposed, one has the same characteristics as the Fibonacci heap and one has some operations more efficient. As the implementation of a Relaxed Fibonacci Heap is quite complex we've postponed its implementation till a later date. For more information about Relaxed Fibonacci Heaps, please see: http://www.pmg.lcs.mit.edu/~chandra/publications/heap.pdf Relaxed Fibonacci Heaps have a slight advantage in parallel environments.

Inheritance Hierarchy
SystemObject
  SD.Tools.Algorithmia.HeapsHeapBaseTElement
    SD.Tools.Algorithmia.HeapsFibonacciHeapTElement

Namespace:  SD.Tools.Algorithmia.Heaps
Assembly:  SD.Tools.Algorithmia (in SD.Tools.Algorithmia.dll) Version: 1.4.0.0 (1.4.19.0711)
Syntax
public class FibonacciHeap<TElement> : HeapBase<TElement>
where TElement : class

Type Parameters

TElement
The type of the element in the heap.

The FibonacciHeapTElement type exposes the following members.

Constructors
  NameDescription
Public methodFibonacciHeapTElement
Initializes a new instance of the FibonacciHeapTElement class.
Top
Properties
  NameDescription
Public propertyCount
Gets the number of elements in the heap.
(Overrides HeapBaseTElementCount.)
Protected propertyElementCompareFunc
Gets the element compare func, which is the func to compare two elements based on the heap type: the function returns true if the first element is indeed the correct parent of the second element or false if not.
(Inherited from HeapBaseTElement.)
Public propertyIsMinHeap
Gets a value indicating whether this instance is a min heap (true) or a max heap (false)
(Inherited from HeapBaseTElement.)
Protected propertyKeyCompareFunc
Gets the key compare func to compare elements based on key.
(Inherited from HeapBaseTElement.)
Public propertyRoot
Gets the root of the heap. Depending on the fact if this is a min or max heap, it returns the element with the minimum key (min heap) or the element with the maximum key (max heap). If the heap is empty, null / default is returned
(Overrides HeapBaseTElementRoot.)
Top
Methods
  NameDescription
Public methodClear
Clears all elements from the heap
(Overrides HeapBaseTElementClear.)
Public methodContains
Determines whether this heap contains the element specified
(Overrides HeapBaseTElementContains(TElement).)
Public methodEquals
Determines whether the specified object is equal to the current object.
(Inherited from Object.)
Public methodExtractRoot
Extracts and removes the root of the heap.
(Overrides HeapBaseTElementExtractRoot.)
Protected methodFinalize
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.
(Inherited from Object.)
Public methodGetHashCode
Serves as the default hash function.
(Inherited from Object.)
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Public methodInsert
Inserts the specified element into the heap at the right spot.
(Overrides HeapBaseTElementInsert(TElement).)
Protected methodMemberwiseClone
Creates a shallow copy of the current Object.
(Inherited from Object.)
Public methodMerge
Merges the specified heap into this heap.
Public methodRemove
Removes the element specified
(Overrides HeapBaseTElementRemove(TElement).)
Public methodToString
Returns a string that represents the current object.
(Inherited from Object.)
Public methodUpdateKeyTKeyType(TElement, ActionTElement, TKeyType, TKeyType)
Updates the key of the element passed in. Only use this method for elements where the key is a property of the element, not the element itself. This means that if you have a heap with value typed elements (e.g. integers), updating the key is updating the value of the element itself, and because a heap might contain elements with the same value, this could lead to undefined results.
(Overrides HeapBaseTElementUpdateKeyTKeyType(TElement, ActionTElement, TKeyType, TKeyType).)
Public methodUpdateKeyTKeyType(TElement, ActionTElement, TKeyType, TKeyType)
Updates the key of the element passed in. Only use this method for elements where the key is a property of the element, not the element itself. This means that if you have a heap with value typed elements (e.g. integers), updating the key is updating the value of the element itself, and because a heap might contain elements with the same value, this could lead to undefined results.
(Inherited from HeapBaseTElement.)
Top
See Also