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

 

C++

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Named requirements

Feature test macros (C++20)

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Technical specifications

Symbols index

External libraries

 

Containers library

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array (C++11)

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list

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multimap

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unordered_set (C++11)

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unordered_map (C++11)

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stack

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span (C++20)

 

std::list

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list::list

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Iterators

list::beginlist::cbegin (C++11)

list::endlist::cend (C++11)

list::rbeginlist::crbegin (C++11)

list::rendlist::crend (C++11)

Capacity

list::empty

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Operations

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list::sort

Non-member functions

std::swap

eraseerase_if (C++20)(C++20)

operator==operator!=operator<operator>operator<=operator>=operator<=> (until C++20)(until C++20)(until C++20)(until C++20)(until C++20)(C++20)

Deduction guides(C++17)

 

void reverse();		(until C++11)
void reverse() noexcept;		(since C++11)

Reverses the order of the elements in the container. No references or iterators become invalidated.

Parameters

(none)

Return value

(none)

Complexity

Linear in the size of the container

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 << "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

See also

sort	sorts the elements (public member function)