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std::forward_list::sort

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std::forward_list
Member-Funktionen
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Member functions
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forward_list::forward_list
forward_list::~forward_list
forward_list::operator=
forward_list::assign
forward_list::get_allocator
Elementzugriff zerstört
Original:
Element access
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forward_list::front
Iteratoren
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Iterators
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forward_list::before_begin
forward_list::cbefore_begin
forward_list::begin
forward_list::cbegin
forward_list::end
forward_list::cend
Kapazität
Original:
Capacity
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forward_list::empty
forward_list::max_size
Modifiers
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Modifiers
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forward_list::clear
forward_list::insert_after
forward_list::emplace_after
forward_list::erase_after
forward_list::push_front
forward_list::emplace_front
forward_list::pop_front
forward_list::resize
forward_list::swap
Operations
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Operations
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forward_list::merge
forward_list::splice_after
forward_list::remove
forward_list::remove_if
forward_list::reverse
forward_list::unique
forward_list::sort
 
void sort();
(1) (seit C++11)
template< class Compare >
void sort( Compare comp );
(2) (seit C++11)
Sortiert die Elemente in aufsteigender Reihenfolge. Die Reihenfolge der gleiche Elemente garantiert erhalten. Die erste Version verwendet operator< um die Elemente zu vergleichen, verwendet die zweite Version des gegebenen Vergleichsfunktion comp. Die Reihenfolge der äquivalente Elemente erhalten bleibt .
Original:
Sorts the elements in ascending order. The order of equal elements is guaranteed to be preserved. The first version uses operator< to compare the elements, the second version uses the given comparison function comp. The ordering of equivalent elements is preserved.
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Inhaltsverzeichnis

[Bearbeiten] Parameter

comp - comparison function which returns ​true if the first argument is less than the second.

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 forward_list<T,Allocator>::const_iterator can be dereferenced and then implicitly converted to both of them. ​

[Bearbeiten] Rückgabewert

(None)
Original:
(none)
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[Bearbeiten] Beispiel

#include <iostream>
#include <functional>
#include <forward_list>
 
std::ostream& operator<<(std::ostream& ostr, const std::forward_list<int>& list)
{
    for (auto &i : list) {
        ostr << " " << i;
    }
    return ostr;
}
 
int main()
{
    std::forward_list<int> list = { 8,7,5,9,0,1,3,2,6,4 };
 
    std::cout << "before:     " << list << "\n";
    list.sort();
    std::cout << "ascending:  " << list << "\n";
    list.sort(std::greater<int>());
    std::cout << "descending: " << list << "\n";
}

Output:

before:      8 7 5 9 0 1 3 2 6 4
ascending:   0 1 2 3 4 5 6 7 8 9
descending:  9 8 7 6 5 4 3 2 1 0

[Bearbeiten] Komplexität

N · log(N) Vergleiche, wo N ist die Größe des Behälters .
Original:
N · log(N) comparisons, where N is the size of the container.
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