std::forward_list<T,Allocator>::reverse
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std::forward_list
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forward_list::reverse
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void reverse() noexcept;
(since C++11) (constexpr since C++26)
Reverses the order of the elements in the container.
No references or iterators become invalidated.
[edit] Complexity
Linear in the size of the container.
[edit] Example
Run this code
#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 << "initially: " << list << '\n'; list.sort(); std::cout << "ascending: " << list << '\n'; list.reverse(); std::cout << "descending:" << list << '\n'; }
Output:
initially: 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