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    std::mismatch

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    <metanoindex/>

     
    C++
     
    Bibliothèque d'algorithmes
    Fonctions
    Original:
    Functions
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    Non-modification de la séquence des opérations
    Original:
    Non-modifying sequence operations
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    Modification de la séquence des opérations
    Original:
    Modifying sequence operations
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    Des opérations de partitionnement
    Original:
    Partitioning operations
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    Opérations de tri (sur les gammes triés)
    Original:
    Sorting operations (on sorted ranges)
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    is_sorted (C++11)
    is_sorted_until (C++11)
    sort
    Opérations binaires de recherche (sur les gammes triés)
    Original:
    Binary search operations (on sorted ranges)
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    Définir les opérations (sur les gammes triés)
    Original:
    Set operations (on sorted ranges)
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    Opérations Heap
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    Heap operations
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    Minimum / maximum de fonctionnement
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    Minimum/maximum operations
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    Opérations numériques
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    Numeric operations
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    Bibliothèque C
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    C library
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    <tbody> </tbody>
    Déclaré dans l'en-tête <algorithm>
    template< class InputIt1, class InputIt2 > std::pair<InputIt1,InputIt2> mismatch( InputIt1 first1, InputIt1 last1, InputIt2 first2 );
    		 (1)
    template< class InputIt1, class InputIt2, class BinaryPredicate > std::pair<InputIt1,InputIt2> mismatch( InputIt1 first1, InputIt1 last1, InputIt2 first2, BinaryPredicate p );
    		 (2)
    Retourne la paire désadaptation d'abord des éléments de deux gammes: celle définie par [first1, last1) et un autre à partir de first2. La première version de la fonction utilise operator== de comparer les éléments, la deuxième version utilise le prédicat binaire donné p .
    Original:
    Returns the first mismatching pair of elements from two ranges: one defined by [first1, last1) and another starting at first2. The first version of the function uses operator== to compare the elements, the second version uses the given binary predicate p.
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    Paramètres

    first1, last1 -
    la première plage des éléments
    Original:
    the first range of the elements
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    first2 -
    le début de la seconde plage des éléments
    Original:
    the beginning of the second range of the elements
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    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.
    The types Type1 and Type2 must be such that objects of types InputIt1 and InputIt2 can be dereferenced and then implicitly converted to Type1 and Type2 respectively.

    ​

    Type requirements
    -
    InputIt1 must meet the requirements of InputIterator.
    -
    InputIt2 must meet the requirements of InputIterator.
    -
    OutputIt must meet the requirements of OutputIterator.

    Retourne la valeur

    std::pair avec les itérateurs aux deux premières non équivalents éléments, ou, si aucun des différents éléments trouvés, paire avec last1 et l'itérateur correspondant de la deuxième plage .
    Original:
    std::pair with iterators to the first two non-equivalent elements, or, if no different elements found, pair with last1 and the corresponding iterator from the second range.
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    Complexité

    Tout au plus last1 - first1 applications du prédicat
    Original:
    At most last1 - first1 applications of the predicate
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    Mise en œuvre possible

    First version 
    template<class InputIt1, class InputIt2>
std::pair<InputIt1, InputIt2>
    mismatch(InputIt1 first1, InputIt1 last1, InputIt2 first2)
{
    while (first1 != last1 && *first1 == *first2) {
        ++first1, ++first2;
    }
    return std::make_pair(first1, first2);
}
    Second version 
    template<class InputIt1, class InputIt2, class BinaryPredicate>
std::pair<InputIt1, InputIt2>
    mismatch(InputIt1 first1, InputIt1 last1, InputIt2 first2, BinaryPredicate p)
{
    while (first1 != last1 && p(*first1, *first2)) {
        ++first1, ++first2;
    }
    return std::make_pair(first1, first2);
}

    Exemple

    Ce programme détermine la sous-chaîne la plus longue qui est simultanément trouve au tout début de la chaîne et à la fin de celui-ci, dans l'ordre inverse (qui peuvent se chevaucher)
    Original:
    This program determines the the longest substring that is simultaneously found at the very beginning of the given string and at the very end of it, in reverse order (possibly overlapping)
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    #include <iostream>
#include <string>
#include <algorithm>

std::string mirror_ends(const std::string& in)
{
    return std::string(in.begin(),
                       std::mismatch(in.begin(), in.end(), in.rbegin()).first);
}

int main()
{
    std::cout << mirror_ends("abXYZba") << '\n'
              << mirror_ends("abca") << '\n'
              << mirror_ends("aba") << '\n';
}

    Résultat : 

    ab
a
aba

    Voir aussi
    détermine si deux ensembles d'éléments sont les mêmes
    Original:
    determines if two sets of elements are the same
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    (fonction générique) [edit]


    (C++11)
    trouve le premier élément répondant à des critères spécifiques
    Original:
    finds the first element satisfying specific criteria
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    (fonction générique) [edit]
    renvoie vrai si une plage est lexicographiquement inférieur à un autre
    Original:
    returns true if one range is lexicographically less than another
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    (fonction générique) [edit]
    recherches pour une série d'éléments
    Original:
    searches for a range of elements
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    (fonction générique) [edit]