examples/manual/ul_bound.cpp

/**************************************************************************
 *
 * ul_bound.cpp - Example program of upper bound algorithm.
 *
 * $Id: //stdlib/dev/examples/stdlib/manual/ul_bound.cpp#10 $
 *
 ***************************************************************************
 *
 * 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 <vector>
#include <algorithm>
#include <functional>
#include <iostream>

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

    const int a[] = { 0, 1, 2, 2, 3, 4, 5, 5, 5, 6, 7 };

    // Set up a vector.
    const Vector v (a, a + sizeof a / sizeof *a);

    // Try lower_bound variants.
    Iterator it1 = std::lower_bound (v.begin (),v.end (), 3);
    Iterator it2 = std::lower_bound (v.begin (),v.end (), 2,
                                     std::less<int>());

    // Try upper_bound variants.
    Iterator it3 = std::upper_bound (v.begin (), v.end (), 3);
    Iterator it4 = std::upper_bound (v.begin (), v.end (), 2,
                                     std::less<int>());

    std::cout << "\n\nThe upper and lower bounds of 3: ( "
              << *it1 << " , " << *it3
              << " ]\n\n\nThe upper and lower bounds of 2: ( "
              << *it2 << " , " << *it4 << " ]\n";

    return 0;
}