Reverse element in a sequence with algorithm reverse - C++ STL Algorithm

Description

Reverse element in a sequence with algorithm reverse

Demo Code

#include <iostream> 
#include <algorithm> // algorithm definitions 
#include <vector> // vector class-template definition 
#include <iterator> // ostream_iterator 
using namespace std; 

int main() /*w ww  .  ja v  a  2 s. c  o  m*/
{ 
   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 ); // copy of a1 
   vector< int > v2( a2, a2 + SIZE ); // copy of a2 
   ostream_iterator< int > output( cout, " " ); 

   cout << "Vector v1 contains: "; 
   copy( v1.begin(), v1.end(), output ); // display vector output 
   cout << "\nVector v2 contains: "; 
   copy( v2.begin(), v2.end(), output ); // display vector output 

   vector< int > results( v1.size() ); 

   // place elements of v1 into results in reverse order 

    cout << "\n\nVector v1 after reverse: "; 
    reverse( v1.begin(), v1.end() ); // reverse elements of v1 
    copy( v1.begin(), v1.end(), output ); 
    cout << endl; 
}

Result

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Related Tutorials

• Using istreambuf_iterator, ostreambuf_iterator, and replace_copy() to filter a file.
• Replacing values from a sequence using algorithms replace_copy_if.
• Replacing values from a sequence using algorithms replace_if
• Reverse a sequence with reverse()
• Copy elements of one sequence into another sequence in reverse order with algorithm reverse_copy