Espaces de noms
Variantes
Affichages
Actions

std::max

De cppreference.com
< cpp‎ | algorithm

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.

Click here for the English version of this page

 
C++
 
Bibliothèque d'algorithmes
Fonctions
Original:
Functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Non-modification de la séquence des opérations
Original:
Non-modifying sequence operations
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Modification de la séquence des opérations
Original:
Modifying sequence operations
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Des opérations de partitionnement
Original:
Partitioning operations
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Opérations de tri (sur les gammes triés)
Original:
Sorting operations (on sorted ranges)
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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)
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Définir les opérations (sur les gammes triés)
Original:
Set operations (on sorted ranges)
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Opérations Heap
Original:
Heap operations
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Minimum / maximum de fonctionnement
Original:
Minimum/maximum operations
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Opérations numériques
Original:
Numeric operations
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Bibliothèque C
Original:
C library
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
 
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.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
3-4)
Renvoie la plus grande des valeurs dans ilist liste d'initialisation .
Original:
Returns the greatest of the values in initializer list ilist.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Les versions (1,3) operator< utiliser pour comparer les valeurs, les versions (2,4) utiliser la fonction de comparaison donnée comp .
Original:
The (1,3) versions use operator< to compare the values, the (2,4) versions use the given comparison function comp.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Sommaire

[modifier] Paramètres

a, b -
les valeurs de comparaison
Original:
the values to compare
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
ilist -
initialiseur liste avec les valeurs à comparer
Original:
initializer list with the values to compare
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[modifier] Complexité

1-2)
Constante
Original:
Constant
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
3-4)
Linéaire dans ilist.size()
Original:
Linear in ilist.size()
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[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" },
                            [](const std::string& s1, const std::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
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(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
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(fonction générique) [edit]
retourne le plus grand élément dans une plage
Original:
returns the largest 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.

(fonction générique) [edit]
Récupérée de « https://fr.cppreference.com/mwiki/index.php?title=cpp/algorithm/max&oldid=47521 »