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std::list<T,Allocator>::reverse

From cppreference.com
< cpp‎ | container‎ | list
 
 
 
std::list
 
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 <list>
 
std::ostream & operator<<(std::ostream & ostr, const std::list <int>& list)
{
 for (auto& i : list)
 ostr << ' ' << i;
 return ostr;
}
 
int main()
{
 std::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

Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR Applied to Behavior as published Correct behavior
LWG 1207 C++98 it was unclear whether iterators and/or references will be invalidated keep valid

[edit] See also

sorts the elements
(public member function) [edit]

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