copy_backward, merge, unique and reverse. : copy_backward « STL Algorithms Non modifying sequence operations « C++ Tutorial

1. C++ Tutorial
2. STL Algorithms Non modifying sequence operations
3. copy_backward

#include <iostream>
#include <algorithm>
#include <vector>

using namespace std;

int main()
{
   const int SIZE = 5;
   int a1[ SIZE ] = { 1, 3, 5, 7, 9 };
   int a2[ SIZE ] = { 2, 4, 5, 7, 9 };
   vector< int > v1( a1, a1 + SIZE );
   vector< int > v2( a2, a2 + SIZE );

   vector< int > results( v1.size() );
   copy_backward( v1.begin(), v1.end(), results.end() );
   
   vector< int > results2( v1.size() + v2.size() );
   merge( v1.begin(), v1.end(), v2.begin(), v2.end(),results2.begin() );
   
   vector< int >::iterator endLocation;
   endLocation = unique( results2.begin(), results2.end() );

   reverse( v1.begin(), v1.end() );

   cout << endl;
   return 0;
}