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std::partial_sort

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< cpp‎ | algorithm

 
 
Algoritmo biblioteca
Funciones
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Functions
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Para no modificar la secuencia de las operaciones
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Non-modifying sequence operations
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Modificación de la secuencia de operaciones
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Modifying sequence operations
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Particionamiento operaciones
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Partitioning operations
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Clasificación de las operaciones (en rangos ordenados)
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Sorting operations (on sorted ranges)
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Las operaciones binarias de búsqueda (en rangos ordenados)
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Binary search operations (on sorted ranges)
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Conjunto de operaciones (en rangos ordenados)
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Set operations (on sorted ranges)
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Operaciones del montón
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Heap operations
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Mínimo / máximo de operaciones
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Minimum/maximum operations
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Operaciones numéricas
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Numeric operations
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C biblioteca
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C library
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Defined in header <algorithm>
template< class RandomIt >
void partial_sort( RandomIt first, RandomIt middle, RandomIt last );
(1)
template< class RandomIt, class Compare >
void partial_sort( RandomIt first, RandomIt middle, RandomIt last, Compare comp );
(2)
Ordena de algunos de los elementos en el rango [first, last) en orden ascendente. El middle - first primero de estos elementos se colocan en el rango [first, middle). El orden de los elementos iguales no se garantiza que se mantendrá. El orden de los elementos restantes en el rango [middle, last) no está especificada. La primera versión utiliza operator< para comparar los elementos, la segunda versión utiliza la función de comparación dado comp .
Original:
Sorts some of the elements in the range [first, last) in ascending order. The first middle - first of these elements are placed in the range [first, middle). The order of equal elements is not guaranteed to be preserved. The order of the remaining elements in the range [middle, last) is unspecified. The first version uses operator< to compare the elements, the second version uses the given comparison function comp.
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Contenido

[editar] Parámetros

first, last -
la gama de elementos a ordenar
Original:
the range of elements to sort
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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 ValueSwappable and RandomAccessIterator.
-
The type of dereferenced RandomIt must meet the requirements of MoveAssignable and MoveConstructible.

[editar] Valor de retorno

(Ninguno)
Original:
(none)
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[editar] Complejidad

O(N·log2(N)), donde las aplicaciones N = std::distance(first, last) de cmp. Si la memoria adicional está disponible, la complejidad es O(N·log(N))
Original:
O(N·log2(N)), where N = std::distance(first, last) applications of cmp. If additional memory is available, then the complexity is O(N·log(N))
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[editar] Ejemplo

#include <algorithm>
#include <functional>
#include <array>
#include <iostream>
 
int main()
{
    std::array<int, 10> s{5, 7, 4, 2, 8, 6, 1, 9, 0, 3};
 
    std::partial_sort(s.begin(), s.begin() + 3, s.end());
    for (int a : s) {
        std::cout << a << " ";
    } 
}

Output:

0 1 2 7 8 6 5 9 4 3

[editar] Ver también

copias y clasifica parcialmente una serie de elementos
Original:
copies and partially sorts a range of elements
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(función de plantilla) [edit]
Ordena un intervalo de elementos, mientras que la preservación del orden entre los elementos iguales
Original:
sorts a range of elements while preserving order between equal elements
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(función de plantilla) [edit]
Ordena un intervalo en orden ascendente
Original:
sorts a range into ascending order
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(función de plantilla) [edit]