deque rbegin() function in C++ STL
The deque::rbegin() is an inbuilt function in C++ STL which returns a reverse iterator which points to the last element of the deque (i.e., its reverse beginning).
Syntax:
deque_name.rbegin()
Parameter: This function does not accept any parameters.
Return value: It returns a reverse iterator which points to the last element of the deque.
Below programs illustrates the above function:
Program 1:
// C++ program to illustrate the // deque::rbegin() function #include <bits/stdc++.h> using namespace std; int main() { deque<int> dq = { 10, 20, 30, 40, 50 }; cout << "The deque in reverse order: "; // prints the elements in reverse order for (auto it = dq.rbegin(); it != dq.rend(); ++it) cout << *it << " "; return 0; } |
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Output:
The deque in reverse order: 50 40 30 20 10
Program 2:
// C++ program to illustrate the // deque::rbegin() function #include <bits/stdc++.h> using namespace std; int main() { deque<char> dq = { 'a', 'b', 'c', 'd', 'e' }; cout << "The deque in reverse order: "; // prints the elements in reverse order for (auto it = dq.rbegin(); it != dq.rend(); ++it) cout << *it << " "; return 0; } |
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Output:
The deque in reverse order: e d c b a
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