void reverse(); | (since C++11) |
Reverses the order of the elements in the container. No references or iterators become invalidated.
Parameters
(none).
Return value
(none).
Example
#include <iostream>
#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.reverse();
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
Complexity
Linear in the size of the container.
See also
| sorts the elements (public member function) |
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