std::partition_copy
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| Defined in header <algorithm>
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| template< class InputIt, class OutputIt1,           class OutputIt2, class UnaryPredicate > | (C++11およびそれ以降) | |
pでレンジ[first, last)から範囲の先頭に述語d_first_trueを満たす要素をコピーし、pでレンジ先頭にd_first_falseを満たさない要素がコピーされます.Original:
Copies the elements that satisfy the predicate 
p from the range [first, last) to the range beginning at d_first_true, and copies the elements that do not satisfy p to the range beginning at d_first_false.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.
| 目次 | 
[編集] パラメータ
| first, last | - |  ソートする要素の範囲 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_true | - |  pを満たす要素の出力範囲の始まり Original:  the beginning of the output range for the elements that satisfy p The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. | 
| d_first_false | - |  pを満たさない要素の出力範囲の始まり Original:  the beginning of the output range for the elements that do not satisfy p The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. | 
| p | - | unary predicate which returns true  要素がd_first_trueに配置する必要があるかどうか . Original:  if the element should be placed in d_first_true  The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. The signature of the predicate function should be equivalent to the following: bool pred(const Type &a); The signature does not need to have const &, but the function must not modify the objects passed to it. | 
| 型の要件 | ||
| - InputItはInputIteratorの要求を満足しなければなりません。 | ||
| - OutputIt1はOutputIteratorの要求を満足しなければなりません。 | ||
| - OutputIt2はOutputIteratorの要求を満足しなければなりません。 | ||
[編集] 値を返します
イテレータからpair範囲と
d_first_true範囲の末尾を指すイテレータの最後に構築d_first_false.Original:
A pair constructed from the iterator to the end of the 
d_first_true range and the iterator to the end of the d_first_false range.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.
[編集] 複雑性
distance(first, last)の正確pアプリケーション.Original:
Exactly 
distance(first, last) applications of p.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.
[編集] 可能な実装
| template<class InputIt, class OutputIt1, class OutputIt2, class UnaryPredicate> std::pair<OutputIt1, OutputIt2> partition_copy(InputIt first, InputIt last, OutputIt1 d_first_true, OutputIt2 d_first_false, UnaryPredicate p) { while (first != last) { if (p(*first)) { *d_first_true = *first; ++d_first_true; } else { *d_first_false = *first; ++d_first_false; } ++first; } return std::pair<OutputIt1, OutputIt2>(d_first_true, d_first_false); } | 
[編集] 例
このコードを実行します
#include <iostream> #include <algorithm> #include <utility> int main() { int arr [10] = {1,2,3,4,5,6,7,8,9,10}; int true_arr [5] = {0}; int false_arr [5] = {0}; std::partition_copy(std::begin(arr), std::end(arr), std::begin(true_arr),std::begin(false_arr), [] (int i) {return i > 5;}); std::cout << "true_arr: "; for (auto it = std::begin(true_arr); it != std::end(true_arr); ++it) { std::cout << *it << ' '; } std::cout << '\n'; std::cout << "false_arr: "; for (auto it = std::begin(false_arr); it != std::end(false_arr); ++it) { std::cout << *it << ' '; } std::cout << '\n'; return 0; }
出力:
true_arr: 6 7 8 9 10 false_arr: 1 2 3 4 5
[編集] 参照
|  二つのグループに要素の範囲を分割します  Original:  divides a range of elements into two groups  The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (関数テンプレート) | |
|  それらの相対的な順序を維持しながら、二つのグループに要素を分割します  Original:  divides elements into two groups while preserving their relative order  The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (関数テンプレート) | |


