std::partition_copy
|
|
This page has been machine-translated from the English version of the wiki using Google Translate.
The translation may contain errors and awkward wording. Hover over text to see the original version. You can help to fix errors and improve the translation. For instructions click here. |
| Defined in header <algorithm>
|
||
| template< class InputIt, class OutputIt1, class OutputIt2, class UnaryPredicate > |
(C + + 11以来) | |
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.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.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:
The signature does not need to have const &, but the function must not modify the objects passed to it. | |||||||||
| Type requirements | |||||||||||
-InputIt must meet the requirements of InputIterator.
| |||||||||||
-OutputIt1 must meet the requirements of OutputIterator.
| |||||||||||
-OutputIt2 must meet the requirements of OutputIterator.
| |||||||||||
[編集] 値を返します
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.d_first_true range and the iterator to the end of the d_first_false range.You can help to correct and verify the translation. Click here for instructions.
[編集] 複雑
distance(first, last)の正確pアプリケーション.distance(first, last) applications of p.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
#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; }
Output:
true_arr: 6 7 8 9 10 false_arr: 1 2 3 4 5
[編集] も参照してください
| 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) | |