std::min_element
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Déclaré dans l'en-tête <algorithm> | ||
template<class ForwardIt > ForwardIt min_element( ForwardIt first, ForwardIt last ); | (1) | |
template<class ForwardIt, class Compare > ForwardIt min_element( ForwardIt first, ForwardIt last, Compare comp ); | (2) | |
Trouve le plus petit élément dans le
[first, last) gamme. La première version utilise operator< de comparer les valeurs, la deuxième version utilise la fonction de comparaison donnée comp .Original:
Finds the smallest element in the range
[first, last). The first version uses operator< to compare the values, the second version uses 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.
You can help to correct and verify the translation. Click here for instructions.
Sommaire |
[modifier]Paramètres
| first, last | - | itérateurs terme définissant la plage d'examiner Original: forward iterators defining the range to examine The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
| cmp | - | 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. |
| Type requirements | ||
-ForwardIt must meet the requirements of ForwardIterator. | ||
[modifier]Retourne la valeur
Iterator pour le plus petit élément dans le
[first, last) gamme. Si plusieurs éléments de la gamme sont équivalents à le plus petit élément, retourne l'itérateur sur le premier élément tel. Retours last si la plage est vide .Original:
Iterator to the smallest element in the range
[first, last). If several elements in the range are equivalent to the smallest element, returns the iterator to the first such element. Returns last if the range is empty.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.
[modifier]Complexité
Exactement max(N-1,0) comparaisons, où N =std::distance(first, last) .
Original:
Exactly max(N-1,0) comparisons, where N =std::distance(first, last).
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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[modifier]Mise en œuvre possible
| First version |
|---|
template<class ForwardIt> ForwardIt min_element(ForwardIt first, ForwardIt last){if(first == last)return last; ForwardIt smallest = first;++first;for(; first != last;++first){if(*first <*smallest){ smallest = first;}}return smallest;} |
| Second version |
template<class ForwardIt, class Compare> ForwardIt min_element(ForwardIt first, ForwardIt last, Compare comp){if(first == last)return last; ForwardIt smallest = first;++first;for(; first != last;++first){if(comp(*first, *smallest)){ smallest = first;}}return smallest;} |
[modifier]Exemple
#include <algorithm>#include <iostream>#include <vector> int main(){std::vector<int> v{3, 1, 4, 1, 5, 9}; std::vector<int>::iterator result = std::min_element(v.begin(), v.end());std::cout<<"min element at: "<<std::distance(v.begin(), result);}
Résultat :
min element at: 1
[modifier]Voir aussi
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) | |
(C++11) | retourne le plus petit élément et le plus important dans une gamme Original: returns the smallest and 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) |
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) | |
