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C++ Deque Library - crend() Function
Description
The C++ function std::deque::crend() returns a constant reverse iterator which points to the theoretical element preceding the first element in the deque i.e. reverse end of deque.
Declaration
Following is the declaration for std::deque::crend() function form std::deque header.
C++11
const_reverse_iterator crend() const noexcept;
Parameters
None
Return value
Returns a constant random reverse iterator which points to the reverser end of deque.
Exceptions
This member function never throws exception.
Time complexity
Constant i.e. O(1)
Example
The following example shows the usage of std::deque::crend() function.
#include <iostream> #include <deque> using namespace std; int main(void) { deque<int> d = {1, 2, 3, 4, 5}; cout << "Contents of deque are" << endl; for (auto it = d.crend() - 1; it >= d.crbegin(); --it) cout << *it << endl; return 0; }
Let us compile and run the above program, this will produce the following result −
Contents of deque are 1 2 3 4 5
deque.htm
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