std::push_heap
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Defined in header <algorithm> | ||
template<class RandomIt > void push_heap( RandomIt first, RandomIt last ); | (1) | |
template<class RandomIt, class Compare > void push_heap( RandomIt first, RandomIt last, | (2) | |
Insere o elemento no
last-1
posição na pilha definido pela [first, last-1)
intervalo. A primeira versão da função utiliza operator< comparar os elementos, o segundo usa a função de comparação dada 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
.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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Índice |
[editar]Parâmetros
first, last | - | a gama de elementos que definem o heap para modificar Original: the range of elements defining the heap to modify The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
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. |
Type requirements | ||
-RandomIt must meet the requirements of RandomAccessIterator . | ||
-The type of dereferenced RandomIt must meet the requirements of MoveAssignable and MoveConstructible . |
[editar]Valor de retorno
(Nenhum)
Original:
(none)
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[editar]Complexidade
No máximo 2 × log (N) comparações onde N=std::distance(first, last).
Original:
At most 2×log(N) comparisons where N=std::distance(first, last).
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[editar]Notas
Uma pilha' é uma gama de elementos
[f,l)
que tem as seguintes propriedades:Original:
A heap is a range of elements
[f,l)
that has the following properties:The text has been machine-translated via Google Translate.
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- *f é o maior elemento no intervaloOriginal:*f is the largest element in the rangeThe text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions. - um novo elemento pode ser adicionado usando std::push_heap()Original:a new element can be added using std::push_heap()The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions. - o primeiro elemento pode ser removido usando std::pop_heap()Original:the first element can be removed using std::pop_heap()The text has been machine-translated via Google Translate.
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O real disposição dos elementos é definido pela implementação.
Original:
The actual arrangement of the elements is implementation defined.
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[editar]Exemplo
#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';}
Output:
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
[editar]Veja também
remove o maior elemento de um heap Original: removes the largest element from a heap The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (modelo de função) |