Loop through all elements in a vector in reverse order by using rbegn, rend : vector iterator « Vector « C++






  1. C++
  2. Vector
  3. vector iterator

Loop through all elements in a vector in reverse order by using rbegn, rend

   
 

/* The following code example is taken from the book
 * "The C++ Standard Library - A Tutorial and Reference"
 * by Nicolai M. Josuttis, Addison-Wesley, 1999
 *
 * (C) Copyright Nicolai M. Josuttis 1999.
 * Permission to copy, use, modify, sell and distribute this software
 * is granted provided this copyright notice appears in all copies.
 * This software is provided "as is" without express or implied
 * warranty, and with no claim as to its suitability for any purpose.
 */
#include <iostream>
#include <vector>
#include <algorithm>
#include <iterator>
using namespace std;

int main()
{
    vector<int> coll;

    // insert elements from 1 to 9
    for (int i=1; i<=9; ++i) {
        coll.push_back(i);
    }

    // print all element in reverse order
    copy (coll.rbegin(), coll.rend(),        // source
          ostream_iterator<int>(cout," "));  // destination
    cout << endl;
}

/* 
9 8 7 6 5 4 3 2 1

 */








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