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std::swap_ranges

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C++
 
Biblioteca algoritmo
Funções
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Functions
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Não modificar operações de seqüência
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Non-modifying sequence operations
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Modificando operações de seqüência
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Modifying sequence operations
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Particionamento operações
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Partitioning operations
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Operações de classificação (em intervalos ordenados)
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Sorting operations (on sorted ranges)
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Binários operações de busca (em intervalos ordenados)
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Binary search operations (on sorted ranges)
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Definir operações (em intervalos ordenados)
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Set operations (on sorted ranges)
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Operações de pilha
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Heap operations
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Mínimo / máximo de operações
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Minimum/maximum operations
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Operações numéricas
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Numeric operations
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C biblioteca
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C library
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Definido no cabeçalho <algorithm>
template< class ForwardIt1, class ForwardIt2 >
ForwardIt2 swap_ranges( ForwardIt1 first1, ForwardIt1 last1, ForwardIt2 first2 )
Trocas elementos entre [first1, last1) gama e uma outra gama a partir de first2.
Original:
Exchanges elements between range [first1, last1) and another range starting at first2.
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Índice

[editar] Parâmetros

first1, last1 -
a primeira gama de elementos para trocar
Original:
the first range of elements to swap
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first2 -
início da segunda gama de elementos para trocar
Original:
beginning of the second range of elements to swap
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Type requirements
-
ForwardIt1, ForwardIt2 must meet the requirements of ForwardIterator.
-
The types of dereferenced ForwardIt1 and ForwardIt2 must meet the requirements of Swappable

[editar] Valor de retorno

Iterador para o elemento passado o último elemento trocado no início gama com first2.
Original:
Iterator to the element past the last element exchanged in the range beginning with first2.
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[editar] Possível implementação

template<class ForwardIt1, class ForwardIt2>
ForwardIt1 swap_ranges(ForwardIt1 first1, 
                             ForwardIt1 last1, 
                             ForwardIt2 first2)
{
    while (first1 != last1) {
        std::iter_swap(first1++, first2++);
    }
    return first2;
}

[editar] Exemplo

Demonstra troca de subfaixas de diferentes recipientes
Original:
Demonstrates swapping of subranges from different containers
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#include <algorithm>
#include <list>
#include <vector>
#include <iostream>
int main()
{
    std::vector<int> v = {1, 2, 3, 4, 5};
    std::list<int> l = {-1, -2, -3, -4, -5};
 
    std::swap_ranges(v.begin(), v.begin()+3, l.begin());
 
    for(int n : v)
       std::cout << n << ' ';
    std::cout << '\n';
    for(int n : l)
       std::cout << n << ' ';
    std::cout << '\n';
}

Saída: 

-1 -2 -3 4 5
1 2 3 -4 -5

[editar] Complexidade

linear, em que a distância entre first e last
Original:
linear in the distance between first and last
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[editar] Veja também
troca os elementos apontado por dois iteradores
Original:
swaps the elements pointed to by two iterators
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(modelo de função) [edit]
troca os valores dos dois objetos
Original:
swaps the values of two objects
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(modelo de função) [edit]
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