Loop through deque in the reverse direction using a reverse_iterator. - C++ STL

C++ examples for STL:deque

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Description

Loop through deque in the reverse direction using a reverse_iterator.

Demo Code

#include <iostream>
#include <deque>
using namespace std;
void show(const char *msg, deque<int> q);
int main() {/*from w  w  w  . j a  va 2  s  .  c  o  m*/
   //Declare a deque that has an initial capacity of 10.
   deque<int> dq(10);
   for(unsigned i=0; i < dq.size(); ++i)
      dq[i] = i*i;
   // Declare an iterator to a deque<int>.
   deque<int>::iterator itr;
   // Now, declare reverse iterator to a deque<int>
   deque<int>::reverse_iterator ritr;
   // Cycle through dq in the reverse direction using a reverse_iterator.
   for(ritr = dq.rbegin(); ritr != dq.rend(); ++ritr)
      cout << *ritr << " ";
   cout << "\n\n";
   return 0;
}
// Display the contents of a deque<int>.
void show(const char *msg, deque<int> q) {
   cout << msg;
   for(unsigned i=0; i < q.size(); ++i)
      cout << q[i] << " ";
   cout << "\n";
}

Result


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