examples/manual/max_elem.cpp

/**************************************************************************
 *
 * max_elem.cpp - Example program for finding maximum value in a range.
 *
 * $Id: //stdlib/dev/examples/stdlib/manual/max_elem.cpp#11 $
 *
 ***************************************************************************
 *
 * Copyright (c) 1994-2005 Quovadx,  Inc., acting through its  Rogue Wave
 * Software division. Licensed under the Apache License, Version 2.0 (the
 * "License");  you may  not use this file except  in compliance with the
 * License.    You    may   obtain   a   copy   of    the   License    at
 * http://www.apache.org/licenses/LICENSE-2.0.    Unless   required    by
 * applicable law  or agreed to  in writing,  software  distributed under
 * the License is distributed on an "AS IS" BASIS,  WITHOUT WARRANTIES OR
 * CONDITIONS OF  ANY KIND, either  express or implied.  See  the License
 * for the specific language governing permissions  and limitations under
 * the License.
 * 
 **************************************************************************/

#include <algorithm>    // for max_element
#include <functional>   // for less
#include <iostream>     // for cout, endl
#include <vector>       // for vector


int main ()
{
    typedef std::vector<int, std::allocator<int> > Vector;
    typedef Vector::iterator                       Iterator;

    const Vector::value_type d1[] = { 1, 3, 5, 32, 64 }; 			 				
    // Set up vector.
    Vector v1(d1 + 0, d1 + sizeof d1 / sizeof *d1);	

    // Find the largest element in the vector.
    Iterator it1 = std::max_element (v1.begin (), v1.end ());

    // Find the largest element in the range from
    // the beginning of the vector to the 2nd to last.
    Iterator it2 = std::max_element (v1.begin (), v1.end () - 1,
                                     std::less<int>());

    // Find the smallest element.
    Iterator it3 = std::min_element (v1.begin (), v1.end ());

    // Find the smallest value in the range from
    // the beginning of the vector plus 1 to the end.
    Iterator it4 = std::min_element (v1.begin () + 1, v1.end (),
                                     std::less<int>());

    std::cout << *it1 << " " << *it2 << " "
              << *it3 << " " << *it4 << std::endl;

    return 0;
}