std::search_n
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Defined in header <algorithm>
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template< class ForwardIt, class Size, class T > ForwardIt1 search_n( ForwardIt first, ForwardIt last, Size count, const T& value ); |
(1) | |
template< class ForwardIt, class Size, class T, class BinaryPredicate > ForwardIt1 search_n( ForwardIt first, ForwardIt last, Size count, const T& value, |
(2) | |
検索数が同一の要素、与えられた値の値に等しいそれぞれの最初のシーケンスの範囲
[first, last)
。最初のバージョンは、要素を比較するoperator==
使用して、2番目のバージョンは、指定されたバイナリ述語p
を使用しています.Original:
Searches the range
[first, last)
for the first sequence of count identical elements, each equal to the given value value. The first version uses operator==
to compare the elements, the second version uses the given binary predicate 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.
目次 |
[編集] パラメータ
first, last | - | 検討する要素の範囲
Original: the range of elements to examine The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
count | - | を検索するためのシーケンスの長さ
Original: the length of the sequence to search for The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
value | - | 検索する要素の値
Original: the value of the elements to search for The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
p | - | binary predicate which returns true if the elements should be treated as equal. The signature of the predicate function should be equivalent to the following: bool pred(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. |
型の要件 | ||
-ForwardIt は ForwardIterator
の要求を満足しなければなりません。 |
[編集] 値を返します
レンジ
[first, last)
に見出される配列の先頭にIiterator。そのようなシーケンスが見つからない場合は、last
が返されます.Original:
Iiterator to the beginning of the found sequence in the range
[first, last)
. If no such sequence is found, last
is returned.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
述部の中で最も
last - first
アプリケーションで.Original:
At most
last - first
applications of the predicate.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
First version |
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template<class ForwardIt, class Size, class T> ForwardIt1 search_n(ForwardIt first, ForwardIt last, Size count, const T& value) { Size curr_count = 0; ForwardIt result, t_last = first; std::advance(t_last, std::distance(first, last) - count + 1); for (; first != t_last; first++) { curr_count = 0; result = first; while (*first == value) { curr_count++; if (curr_count == count) { return result; } ++first; } } return last; } |
Second version |
template<class ForwardIt, class Size, class T, class BinaryPredicate> ForwardIt1 search_n(ForwardIt first, ForwardIt last, Size count, const T& value, BinaryPredicate p) { Size curr_count = 0; ForwardIt result, t_last = first; std::advance(t_last, std::distance(first, last) - count + 1); for (; first != t_last; first++) { curr_count = 0; result = first; while (p(*first == value)) { curr_count++; if (curr_count == count) { return result; } ++first; } } return last; } |
[編集] 例
This section is incomplete |
[編集] も参照してください
一定の範囲内にある要素の最後のシーケンスを見つけることができます Original: finds the last sequence of elements in a certain range 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) | |
(C++11) |
特定の条件を満たす最初の要素を検索します Original: finds the first element satisfying specific criteria 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) |
ある範囲の要素を検索します (関数テンプレート) |