C++ Deque Library - end() Function

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Description

The C++ function std::deque::end() returns a random access iterator which points to the last element of the deque.

Declaration

Following is the declaration for std::deque::end() function form std::deque header.

C++98

iterator end();
const_iterator end() const;

C++11

iterator end() noexcept;
const_iterator end() const noexcept;

Parameters

None

Return value

If deque object is constant qualified then method returns constant random access iterator otherwise non constant random access iterator.

Exceptions

This member function never throws exception.

Time complexity

Constant i.e. O(1)

Example

The following example shows the usage of std::deque::end() function.

#include <iostream>
#include <deque>

using namespace std;

int main(void) {

   deque<int> d = {1, 2, 3, 4, 5};

   cout << "Contents of deque in reverse order" << endl;

   for (auto it = d.end() - 1; it >= d.begin(); --it)
      cout << *it << endl;

   return 0;
}

Let us compile and run the above program, this will produce the following result −

Contents of deque in reverse order
5
4
3
2
1