Espacios de nombres
Variantes
Acciones

std::make_heap

De cppreference.com
< cpp‎ | algorithm

 
 
Biblioteca de algoritmos
Políticas de ejecución (C++17)
Operaciones no modificadoras de secuencia
(C++11)(C++11)(C++11)
(C++17)
Operaciones modificadoras de secuencia
Operaciones en almacenamiento no inicializado
Operaciones de partición
Operaciones de ordenación
(C++11)
Operaciones de búsqueda binaria
Operaciones de set (en rangos ordenados)
Operaciones de pila
(C++11)
make_heap
Operaciones minimo/maximo
(C++11)
(C++17)
Permutaciones
Operaciones numéricas
Bibliotecas C
 
Definido en la cabecera <algorithm>
template< class RandomIt >
void make_heap( RandomIt first, RandomIt last );
(1)
template< class RandomIt, class Compare >

void make_heap( RandomIt first, RandomIt last,

                Compare comp );
(2)
Construye un montón' en el [first, last) rango. La primera versión de la función utiliza operator< para comparar los elementos, el segundo utiliza la función de comparación dado comp .
Original:
Constructs a heap in the range [first, last). 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.

Contenido

[editar] Parámetros

first, last -
la gama de elementos para hacer que el montón de
Original:
the range of elements to make the heap from
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.

[editar] 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.

[editar] Complejidad

En la mayoría de las comparaciones 3*std::distance(first, last) .
Original:
At most 3*std::distance(first, last) comparisons.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[editar] 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.

[editar] Ejemplo

#include <iostream>
#include <algorithm>
 
int main()
{
    std::vector<int> v { 3, 1, 4, 1, 5, 9 };
 
    std::cout << "initially, v: ";
    for (auto i : v) std::cout << i << ' ';
    std::cout << '\n';
 
    std::make_heap(v.begin(), v.end());
 
    std::cout << "after make_heap, v: ";
    for (auto i : v) std::cout << i << ' ';
    std::cout << '\n';
 
    std::pop_heap(v.begin(), v.end());
    auto largest = v.back();
    v.pop_back();
    std::cout << "largest element: " << largest << '\n';
 
    std::cout << "after removing the largest element, v: ";
    for (auto i : v) std::cout << i << ' ';
    std::cout << '\n';
}

Salida:

initially, v: 3 1 4 1 5 9 
after make_heap, v: 9 5 4 1 1 3 
largest element: 9
after removing the largest element, v: 5 3 4 1 1

[editar] Ver también

Resulta un montón en una gama de elementos ordenados
Original:
turns a heap into a sorted range of elements
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) [editar]