std::partial_sort_copy
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<tbody> </tbody>| Definido no cabeçalho <algorithm>
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template< class InputIt, class RandomIt > RandomIt partial_sort_copy( InputIt first, InputIt last, RandomIt d_first, RandomIt d_last ); |
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template< class InputIt, class RandomIt, class Compare > RandomIt partial_sort_copy( InputIt first, InputIt last, RandomIt d_first, RandomIt d_last, Compare comp ); |
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Classifica alguns dos elementos no intervalo
[first, last) em ordem ascendente. No máximo d_first - d_last dos elementos são movidos para o [d_first, d_first + n) intervalo e classificados. n é o número de elementos para classificar (n = min(last - first, d_last - d_first)). A ordem dos elementos iguais não é garantido para ser preservado. A primeira versão utiliza operator< para comparar os elementos, a segunda versão utiliza a função de comparação dada comp.Original:
Sorts some of the elements in the range
[first, last) in ascending order. At most d_first - d_last of the elements are moved to the range [d_first, d_first + n) and then sorted. n is the number of elements to sort (n = min(last - first, d_last - d_first)). The order of equal elements is not guaranteed to be preserved. The first version uses operator< to compare the elements, the second version 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.
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Parâmetros
| first, last | - | a gama de elementos para classificar
Original: the range of elements to sort The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
| d_first, d_last | - | aleatórios iteradores de acesso que definem o intervalo de destino
Original: random access iterators defining the destination range 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:
The signature does not need to have |
| Type requirements | ||
-InputIt must meet the requirements of InputIterator.
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-RandomIt must meet the requirements of ValueSwappable and RandomAccessIterator.
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-The type of dereferenced RandomIt must meet the requirements of MoveAssignable and MoveConstructible.
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Valor de retorno
um iterador para o elemento que define o limite superior do intervalo de ordenadas, ou seja
d_first + min(last - first, d_last - d_first).Original:
an iterator to the element defining the upper boundary of the sorted range, i.e.
d_first + min(last - first, d_last - d_first).The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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Complexidade
O(N·log(min(D,N)), onde
N = std::distance(first, last), D = std::distance(d_first, d_last) aplicações de cmp.Original:
O(N·log(min(D,N)), where
N = std::distance(first, last), D = std::distance(d_first, d_last) applications of cmp.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
Exemplo
Os tipos de código a seguir um vetor de números inteiros e copiá-los em um menor e um maior vetor .
Original:
The following code sorts an vector of integers and copies them into a smaller and a larger vector.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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#include <algorithm>
#include <vector>
#include <functional>
#include <iostream>
int main()
{
std::vector<int> v0{4, 2, 5, 1, 3};
std::vector<int> v1{10, 11, 12};
std::vector<int> v2{10, 11, 12, 13, 14, 15, 16};
std::vector<int>::iterator it;
it = std::partial_sort_copy(v0.begin(), v0.end(), v1.begin(), v1.end());
std::cout << "Writing to the smaller vector in ascending order gives: ";
for (int a : v1) {
std::cout << a << " ";
}
std::cout << '\n';
if(it == v1.end())
std::cout << "The return value is the end iterator\n";
it = std::partial_sort_copy(v0.begin(), v0.end(), v2.begin(), v2.end(),
std::greater<int>());
std::cout << "Writing to the larger vector in descending order gives: ";
for (int a : v2) {
std::cout << a << " ";
}
std::cout << '\n' << "The return value is the iterator to " << *it << '\n';
}
Saída:
Writing to the smaller vector in ascending order gives: 1 2 3
The return value is the end iterator
Writing to the larger vector in descending order gives: 5 4 3 2 1 15 16
The return value is the iterator to 15
Veja também
classifica os elementos N primeiros de uma série Original: sorts the first N elements of a range The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (modelo de função) | |
tipo um intervalo em ordem crescente Original: sorts a range into ascending order The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (modelo de função) | |
Classifica um intervalo de elementos preservando ordem entre elementos iguais Original: sorts a range of elements while preserving order between equal elements The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (modelo de função) | |