algo/partitioncopy1.cpp

The following code example is taken from the book
The C++ Standard Library - A Tutorial and Reference, 2nd Edition
by Nicolai M. Josuttis, Addison Wesley Longman, 2012
Copyright © 2012 by Pearson Education, Inc. and Nicolai M. Josuttis


#include "algostuff.hpp"
using namespace std;

int main()
{
   vector<int> coll = { 1, 6, 33, 7, 22, 4, 11, 33, 2, 7, 0, 42, 5 };
   PRINT_ELEMENTS(coll,"coll: ");

   // destination collections:
   vector<int> evenColl;
   vector<int> oddColl;

   // copy all elements partitioned accordingly into even and odd elements
   partition_copy (coll.cbegin(),coll.cend(), // source range
                   back_inserter(evenColl),   // destination for even elements
                   back_inserter(oddColl),    // destination for odd elements
                   [](int elem){              // predicate: check for even elements
                       return elem%2==0;
                   });

   PRINT_ELEMENTS(evenColl,"evenColl: ");
   PRINT_ELEMENTS(oddColl, "oddColl:  ");
}