C++ <list> - reverse() Function

The C++ list::reverse function is used to reverse the order of elements of the list container.

Syntax

C++98
C++11

void reverse();

void reverse() noexcept;

Parameters

No parameter is required.

Return Value

None.

Time Complexity

Linear i.e, Θ(n).

Example:

In the example below, the list::reverse function is used reverse the order of elements of the list called MyList.

#include <iostream>
#include <list>
using namespace std;
 
int main (){
  list<int> MyList{10, 20, 30, 40, 50};
  list<int>::iterator it;

  cout<<"MyList contains: ";
  for(it = MyList.begin(); it != MyList.end(); it++)
    cout<<*it<<" ";

  //Reverse the order of all elements of the list
  MyList.reverse();
  
  cout<<"\nMyList contains: ";
  for(it = MyList.begin(); it != MyList.end(); it++)
    cout<<*it<<" ";

  return 0;
}

The output of the above code will be:

MyList contains: 10 20 30 40 50 
MyList contains: 50 40 30 20 10

❮ C++ <list> Library