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std::inplace_merge

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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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merge
inplace_merge
includes
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 BidirIt >
void inplace_merge( BidirIt first, BidirIt middle, BidirIt last );
(1)
template< class BidirIt, class Compare>
void inplace_merge( BidirIt first, BidirIt middle, BidirIt last, Compare comp );
(2)
Combina dos cadenas consecutivas ordenados [first, middle) y [middle, last) en un rango [first, last) ordenada. El orden de los elementos iguales se garantiza que se conservan. La primera versión utiliza operator< para comparar los elementos, la segunda versión utiliza la función de comparación dado comp .
Original:
Merges two consecutive sorted ranges [first, middle) and [middle, last) into one sorted range [first, last). The order of equal elements is guaranteed to be preserved. 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 -
el comienzo de la primera gama ordenados
Original:
the beginning of the first sorted range
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middle -
el final de la primera gama ordenados y el comienzo de la segunda
Original:
the end of the first sorted range and the beginning of the second
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last -
el final de la segunda gama ordenados
Original:
the end of the second sorted range
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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 BidirIt can be dereferenced and then implicitly converted to both of them. ​

Type requirements
-
BidirIt must meet the requirements of ValueSwappable and BidirectionalIterator.
-
The type of dereferenced BidirIt must meet the requirements of MoveAssignable and MoveConstructible.

[editar] Valor de retorno

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

Exactamente N-1 comparaciones memoria adicional si se dispone de suficiente, de lo contrario N·log(N) donde N = std::distance(first, last) .
Original:
Exactly N-1 comparisons if enough additional memory is available, otherwise N·log(N) where N = std::distance(first, last).
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[editar] Notas

Esta función intenta asignar un búfer temporal, normalmente llamando std::get_temporary_buffer. Si la asignación falla, el algoritmo menos eficiente es elegido .
Original:
This function attempts to allocate a temporary buffer, typically by calling std::get_temporary_buffer. If the allocation fails, the less efficient algorithm is chosen.
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[editar] Ejemplo

El código siguiente es una implementación del tipo de mezcla .
Original:
The following code is an implementation of merge sort.
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#include <vector>
#include <iostream>
#include <algorithm>
 
template<class Iter>
void merge_sort(Iter first, Iter last)
{
    if (last - first > 1) {
        Iter middle = first + (last - first) / 2;
        merge_sort(first, middle);
        merge_sort(middle, last);
        std::inplace_merge(first, middle, last);
    }
}
 
int main()
{
    std::vector<int> v{8, 2, -2, 0, 11, 11, 1, 7, 3};
    merge_sort(v.begin(), v.end());
    for(auto n : v) {
        std::cout << n << ' ';
    }
    std::cout << '\n';
}

Output:

-2 0 1 2 3 7 8 11 11

[editar] Ver también

fusiona dos rangos ordenados
Original:
merges two sorted ranges
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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]
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]