std::push_heap

 

C++

Lenguaje

Cabeceras

Conceptos

Biblioteca de utilidades

Biblioteca de cadenas

Biblioteca de contenedores

Biblioteca de algoritmos

Biblioteca de iteradores

Biblioteca numérica

Biblioteca de entrada/salida

Biblioteca de localización

Biblioteca de expresiones regulares (C++11)

Biblioteca de operaciones atómicas (C++11)

Biblioteca de hilos/subprocesos (C++11)

 

Biblioteca de algoritmos

Políticas de ejecución (C++17)
is_execution_policy	execution::seqexecution::parexecution::par_unseq	execution::sequenced_policyexecution::parallel_policyexecution::parallel_unsequenced_policy
Operaciones no modificadoras de secuencia
all_ofany_ofnone_of (C++11)(C++11)(C++11) for_each for_each_n (C++17)	countcount_if mismatch equal adjacent_find	findfind_iffind_if_not (C++11) find_end find_first_of	search search_n lexicographical_compare lexicographical_compare_3way (C++20)
Operaciones modificadoras de secuencia
copycopy_if (C++11) copy_n (C++11) copy_backward move (C++11) move_backward (C++11) transform	fill fill_n generate generate_n swap iter_swap swap_ranges sample (C++17)	removeremove_if replacereplace_if reverse rotate unique random_shuffle (hasta C++17)	remove_copyremove_copy_if replace_copyreplace_copy_if reverse_copy rotate_copy unique_copy shuffle (C++11)
Operaciones en almacenamiento no inicializado
uninitialized_copy uninitialized_move (C++17)	uninitialized_copy_n (C++11) uninitialized_move_n (C++17)	uninitialized_fill	uninitialized_fill_n
Operaciones de partición
is_partitioned (C++11) partition_point (C++11)	partition partition_copy (C++11)	stable_partition
Operaciones de ordenación
is_sorted (C++11) is_sorted_until (C++11)	sort stable_sort	partial_sort partial_sort_copy	nth_element
Operaciones de búsqueda binaria
lower_bound	upper_bound	binary_search	equal_range
Operaciones de set (en rangos ordenados)
merge inplace_merge	set_difference set_intersection	set_symmetric_difference set_union	includes
Operaciones de pila
is_heap (C++11) is_heap_until (C++11)	make_heap sort_heap	push_heap pop_heap
Operaciones minimo/maximo
max max_element	min min_element	minmax (C++11) minmax_element (C++11)	clamp (C++17) compare_3way (C++20)
Permutaciones
is_permutation (C++11)	next_permutation	prev_permutation
Operaciones numéricas
iota (C++11) inner_product adjacent_difference	accumulate reduce (C++17) transform_reduce (C++17)	partial_sum inclusive_scan (C++17) exclusive_scan (C++17)	transform_inclusive_scan (C++17) transform_exclusive_scan (C++17)
Bibliotecas C
qsort	bsearch

 

Definido en la cabecera <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)

Inserta el elemento en la posición last-1 en el montón definido por la [first, last-1) rango. La primera versión de la función utiliza operator< para comparar los elementos, el segundo utiliza la función de comparación dado 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.

Parámetros

first, last	-	la gama de elementos que definen el montón de 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. 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. ​
Requerimientos de tipo
- RandomIt debe reunir los requerimientos de RandomAccessIterator.
- The type of dereferenced RandomIt must meet the requirements of MoveAssignable and MoveConstructible.

Valor de retorno

(Ninguno)

Original:

(none)

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Complejidad

A lo sumo 2 × log (N) comparaciones N=std::distance(first, last) donde .

Original:

At most 2×log(N) comparisons where N=std::distance(first, last).

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Notas

Un montón' es una serie de elementos [f,l) que tiene las siguientes propiedades:

Original:

A heap is a range of elements [f,l) that has the following properties:

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

• *f es el elemento más grande en el intervalo

  Original:

  *f is the largest element in the range

  The text has been machine-translated via Google Translate.
  You can help to correct and verify the translation. Click here for instructions.
• un elemento nuevo puede añadirse utilizando 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.
• el primer elemento se puede eliminar con std::pop_heap()

  Original:

  the first element can be removed using std::pop_heap()

  The text has been machine-translated via Google Translate.
  You can help to correct and verify the translation. Click here for instructions.

La disposición real de los elementos depende de la implementación .

Original:

The actual arrangement of the elements is implementation defined.

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Ejemplo

#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';
}

Salida:

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

Ver también

pop_heap

elimina el elemento más grande de un montón 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. (plantilla de función)