std::search
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definiert in Header <algorithm>
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template< class ForwardIt1, class ForwardIt2 > ForwardIt1 search( ForwardIt1 first, ForwardIt1 last, |
(1) | |
template< class ForwardIt1, class ForwardIt2, class BinaryPredicate > ForwardIt1 search( ForwardIt1 first, ForwardIt1 last, |
(2) | |
[s_first, s_last)
im Bereich [first, last - (s_last - s_first))
. Die erste Version verwendet operator==
um die Elemente zu vergleichen, verwendet die zweite Version des gegebenen binären Prädikats p
.[s_first, s_last)
in the range [first, last - (s_last - s_first))
. The first version uses operator==
to compare the elements, the second version uses the given binary predicate p
.You can help to correct and verify the translation. Click here for instructions.
Inhaltsverzeichnis |
[Bearbeiten] Parameter
first, last | - | das Spektrum der Elemente zu untersuchen
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. |
s_first, s_last | - | der Bereich der Elemente für
Original: the range of 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. |
Type requirements | ||
-ForwardIt1, ForwardIt2 must meet the requirements of ForwardIterator .
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[Bearbeiten] Rückgabewert
[s_first, s_last)
im Bereich [first, last - (s_last - s_first))
. Wenn keine solche Teilfolge, ist last
returned.[s_first, s_last)
in the range [first, last - (s_last - s_first))
. If no such subsequence is found, last
is returned.You can help to correct and verify the translation. Click here for instructions.
[s_first, s_last)
leer ist, wird first
zurückgegeben. (seit C++11)[s_first, s_last)
is empty, first
is returned. (seit C++11)You can help to correct and verify the translation. Click here for instructions.
[Bearbeiten] Komplexität
S*N
Vergleiche, wo S = std::distance(s_first, s_last) und N = std::distance(first, last) .S*N
comparisons where S = std::distance(s_first, s_last) and N = std::distance(first, last).You can help to correct and verify the translation. Click here for instructions.
[Bearbeiten] Mögliche Implementierung
First version |
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template<class ForwardIt1, class ForwardIt2> ForwardIt1 search(ForwardIt1 first, ForwardIt1 last, ForwardIt2 s_first, ForwardIt2 s_last) { for (; ; ++first) { ForwardIt1 it = first; for (ForwardIt2 s_it = s_first; ; ++it, ++s_it) { if (s_it == s_last) { return first; } if (it == last) { return last; } if (!(*it == *s_it)) { break; } } } } |
Second version |
template<class ForwardIt1, class ForwardIt2, class BinaryPredicate> ForwardIt1 search(ForwardIt1 first, ForwardIt1 last, ForwardIt2 s_first, ForwardIt2 s_last, BinaryPredicate p) { for (; ; ++first) { ForwardIt1 it = first; for (ForwardIt2 s_it = s_first; ; ++it, ++s_it) { if (s_it == s_last) { return first; } if (it == last) { return last; } if (!p(*it, *s_it)) { break; } } } } |
[Bearbeiten] Beispiel
This section is incomplete |
[Bearbeiten] Siehe auch
findet die letzte Sequenz von Elementen in einem bestimmten Bereich 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. (Funktions-Template) | |
Bestimmt, ob zwei Sätze von Elementen gleich sind (Funktions-Template) | |
(C++11) |
Findet das erste Elemente, welches bestimmte Kriterien erfüllt (Funktions-Template) |
wahr, wenn ein Bereich ist lexikographisch kleiner als der andere Original: returns true if one range is lexicographically less than another The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktions-Template) | |
Findet die erste Position, an der sich zwei Bereiche unterscheiden (Funktions-Template) | |
Suchen nach einer Reihe aufeinanderfolgender Kopien eines Elements in einem Bereich Original: searches for a number consecutive copies of an element in a range The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktions-Template) |