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      std::max

      De cppreference.com
      < cpp‎ | algorithm

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      C++
       
      Bibliothèque d'algorithmes
      Fonctions
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      Functions
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      Non-modification de la séquence des opérations
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      Non-modifying sequence operations
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      Modification de la séquence des opérations
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      Modifying sequence operations
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      Des opérations de partitionnement
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      Partitioning operations
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      Opérations de tri (sur les gammes triés)
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      Sorting operations (on sorted ranges)
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      Opérations binaires de recherche (sur les gammes triés)
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      Binary search operations (on sorted ranges)
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      Définir les opérations (sur les gammes triés)
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      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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      Déclaré dans l'en-tête <algorithm>
      template<class T >
      const T& max(const T& a, const T& b );
      		 (1)
      template<class T, class Compare >
      const T& max(const T& a, const T& b, Compare comp );
      		 (2)
      template<class T >
      T max(std::initializer_list<T> ilist);
      		 (3) (depuis C++11)
      template<class T, class Compare >
      T max(std::initializer_list<T> ilist, Compare comp );
      		 (4) (depuis C++11)
      1-2)
      Retourne la plus grande des deux valeurs .
      Original:
      Returns the greater of the two values.
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      3-4)
      Renvoie la plus grande des valeurs dans ilist liste d'initialisation .
      Original:
      Returns the greatest of the values in initializer list ilist.
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      Les versions (1,3) operator< utiliser pour comparer les valeurs, les versions (2,4) utiliser la fonction de comparaison donnée comp .
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      The (1,3) versions use operator< to compare the values, the (2,4) versions use the given comparison function comp.
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      Sommaire

      [modifier]Paramètres

      a, b -
      les valeurs de comparaison
      Original:
      the values to compare
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      ilist -
      initialiseur liste avec les valeurs à comparer
      Original:
      initializer list with the values to compare
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      comp - comparison function which returns ​true if if a is less than b.

      The signature of the comparison function should be equivalent to the following:

       bool cmp(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 an object of type T can be implicitly converted to both of them. ​

      Type requirements
      -
      T must meet the requirements of LessThanComparable. for the overloads (1) and (3)
      -
      T must meet the requirements of CopyConstructible. for the overloads (3) and (4)

      [modifier]Retourne la valeur

      1-2)
      Le plus élevé des a et b. Si elles sont équivalentes, les rendements a .
      Original:
      The greater of a and b. If they are equivalent, returns a.
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      3-4)
      La plus grande valeur dans ilist. Si plusieurs valeurs sont équivalentes à la plus grande, retourne le plus à gauche .
      Original:
      The greatest value in ilist. If several values are equivalent to the greatest, returns the leftmost one.
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      [modifier]Complexité

      1-2)
      Constante
      Original:
      Constant
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      3-4)
      Linéaire dans ilist.size()
      Original:
      Linear in ilist.size()
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      [modifier]Mise en œuvre possible

      First version 
      template<class T>const T& max(const T& a, const T& b){return(a < b)? b : a;}
      Second version 
      template<class T, class Compare>const T& max(const T& a, const T& b, Compare comp){return(comp(a, b))? b : a;}
      Third version 
      template<class T > T max(std::initializer_list<T> ilist){return*std::max_element(ilist.begin(), ilist.end());}
      Fourth version 
      template<class T, class Compare > T max(std::initializer_list<T> ilist, Compare comp ){return*std::max_element(ilist.begin(), ilist.end(), comp);}

      [modifier]Exemple

      #include <algorithm>#include <iostream>#include <string> int main(){std::cout<<"larger of 1 and 9999: "<< std::max(1, 9999)<<'\n'<<"larger of 'a', and 'b': "<< std::max('a', 'b')<<'\n'<<"longest of \"foo\", \"bar\", and \"hello\": "<< std::max({"foo", "bar", "hello"}, [](conststd::string& s1, conststd::string& s2){return s1.size()< s2.size();})<<'\n';}

      Résultat : 

      larger of 1 and 9999: 9999 larger of 'a', and 'b': b longest of "foo", "bar", and "hello": hello

      [modifier]Voir aussi

      retourne le plus petit des deux éléments
      Original:
      returns the smaller of two elements
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      (fonction générique)[edit]
      (C++11)
      renvoie le plus grand et le plus petit des deux éléments
      Original:
      returns the larger and the smaller of two elements
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      (fonction générique)[edit]
      retourne le plus grand élément dans une plage
      Original:
      returns the largest element in a range
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      (fonction générique)[edit]
      Récupérée de « https://fr.cppreference.com/mwiki/index.php?title=cpp/algorithm/max&oldid=47521 »
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