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    std::push_heap

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    <metanoindex/>

     
    C++
     
    Bibliothque d'algorithmes
    Fonctions
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    Functions
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    Non-modification de la squence des oprations
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    Non-modifying sequence operations
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    Modification de la squence des oprations
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    Modifying sequence operations
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    Des oprations de partitionnement
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    Partitioning operations
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    Oprations de tri (sur les gammes tris)
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    Sorting operations (on sorted ranges)
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    is_sorted (C++11)
    is_sorted_until (C++11)
    sort
    Oprations binaires de recherche (sur les gammes tris)
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    Binary search operations (on sorted ranges)
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    Dfinir les oprations (sur les gammes tris)
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    Set operations (on sorted ranges)
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    Oprations Heap
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    Heap operations
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    Minimum / maximum de fonctionnement
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    Minimum/maximum operations
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    Oprations numriques
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    Numeric operations
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    Bibliothque C
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    C library
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    <tbody> </tbody>
    Dclar dans l'en-tte <algorithm>
    template< class RandomIt > void push_heap( RandomIt first, RandomIt last );
    		 (1)
    template< class RandomIt, class Compare > void push_heap( RandomIt first, RandomIt last, Compare comp );
    		 (2)
    Insre l'lment la position de last-1 dans le segment de mmoire dfinie par le [first, last-1) gamme. La premire version de la fonction utilise operator< de comparer les lments, la seconde utilise la fonction de comparaison donne comp .
    Original:
    Inserts the element at the position last-1 into the heap defined by the range [first, last-1). The first version of the function uses operator< to compare the elements, the second uses the given comparison function comp.
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    Paramtres

    first, last -
    la srie d'lments qui dfinissent le segment de mmoire modifier
    Original:
    the range of elements defining the heap to modify
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    comp - comparison function which returns true if the first argument is less than the second.

    The signature of the comparison function should be equivalent to the following:

    bool cmp(const Type1 &a, const Type2 &b);

    The signature does not need to have const &, but the function must not modify the objects passed to it.
    The types Type1 and Type2 must be such that an object of type RandomIt can be dereferenced and then implicitly converted to both of them.

    Type requirements
    -
    RandomIt must meet the requirements of RandomAccessIterator.
    -
    The type of dereferenced RandomIt must meet the requirements of MoveAssignable and MoveConstructible.

    Retourne la valeur

    (Aucun)
    Original:
    (none)
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    Complexit

    Tout au plus 2 log (N) comparaisons o N=std::distance(first, last) .
    Original:
    At most 2×log(N) comparisons where N=std::distance(first, last).
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    Notes

    Un tas' est un ensemble d'lments [f,l) qui a les proprits suivantes:
    Original:
    A heap is a range of elements [f,l) that has the following properties:
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    • *f est le plus grand lment de la srie
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      *f is the largest element in the range
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    • un nouvel lment peut tre ajout l'aide std::push_heap()
      Original:
      a new element can be added using std::push_heap()
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    • le premier lment peut tre retir l'aide std::pop_heap()
      Original:
      the first element can be removed using std::pop_heap()
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    La disposition relle des lments est dfini par l'implmentation .
    Original:
    The actual arrangement of the elements is implementation defined.
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    Exemple

    #include <iostream>
#include <algorithm>

int main()
{
    std::vector<int> v { 3, 1, 4, 1, 5, 9 };

    std::make_heap(v.begin(), v.end());

    std::cout << "v: ";
    for (auto i : v) std::cout << i << ' ';
    std::cout << '\n';

    v.push_back(6);

    std::cout << "before push_heap: ";
    for (auto i : v) std::cout << i << ' ';
    std::cout << '\n';

    std::push_heap(v.begin(), v.end());

    std::cout << "after push_heap: ";
    for (auto i : v) std::cout << i << ' ';
    std::cout << '\n';
}

    Rsultat : 

    v: 9 5 4 1 1 3 
before push_heap: 9 5 4 1 1 3 6 
after push_heap:  9 5 6 1 1 3 4

    Voir aussi
    supprime le plus grand lment partir d'un tas
    Original:
    removes the largest element from a heap
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    (fonction gnrique) [edit]
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