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prtition.cpp
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C/C++ Source or Header
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1998-02-09
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109 lines
#include "stlexam.h"
#pragma hdrstop
/**************************************************************************
*
* prtition.cpp - Example program for partition. See Class Reference Section
*
* $Id: prtition.cpp,v 1.14 1996/08/28 01:17:59 smithey Exp $
*
***************************************************************************
*
* (c) Copyright 1994, 1995 Rogue Wave Software, Inc.
* ALL RIGHTS RESERVED *
* The software and information contained herein are proprietary to, and
* comprise valuable trade secrets of, Rogue Wave Software, Inc., which
* intends to preserve as trade secrets such software and information.
* This software is furnished pursuant to a written license agreement and
* may be used, copied, transmitted, and stored only in accordance with
* the terms of such license and with the inclusion of the above copyright
* notice. This software and information or any other copies thereof may
* not be provided or otherwise made available to any other person.
*
* Notwithstanding any other lease or license that may pertain to, or
* accompany the delivery of, this computer software and information, the
* rights of the Government regarding its use, reproduction and disclosure
* are as set forth in Section 52.227-19 of the FARS Computer
* Software-Restricted Rights clause.
*
* Use, duplication, or disclosure by the Government is subject to
* restrictions as set forth in subparagraph (c)(1)(ii) of the Rights in
* Technical Data and Computer Software clause at DFARS 252.227-7013.
* Contractor/Manufacturer is Rogue Wave Software, Inc.,
* P.O. Box 2328, Corvallis, Oregon 97339.
*
* This computer software and information is distributed with "restricted
* rights." Use, duplication or disclosure is subject to restrictions as
* set forth in NASA FAR SUP 18-52.227-79 (April 1985) "Commercial
* Computer Software-Restricted Rights (April 1985)." If the Clause at
* 18-52.227-74 "Rights in Data General" is specified in the contract,
* then the "Alternate III" clause applies.
*
**************************************************************************/
#ifndef _RWSTD_HEADER_REQUIRES_HPP
#include<functional>
#include<deque>
#include<algorithm>
#else
#include<functional.hpp>
#include<deque.hpp>
#include<algorithm.hpp>
#endif
#ifdef _RW_STD_IOSTREAM
#include <iostream>
#else
#include <iostream.h>
#endif
#ifndef _RWSTD_NO_NAMESPACE
using namespace std;
#endif
//
// Create a new predicate from unary_function.
//
template<class Arg>
class is_even : public unary_function<Arg, bool>
{
public:
bool operator()(const Arg& arg1) { return (arg1 % 2) == 0; }
};
int main ()
{
//
// Initialize a deque with an array of integers.
//
int init[10] = { 1,2,3,4,5,6,7,8,9,10 };
deque<int,allocator<int> > d1(init+0, init+10);
deque<int,allocator<int> > d2(init+0, init+10);
//
// Print out the original values.
//
cout << "Unpartitioned values: " << "\t\t";
copy(d1.begin(), d1.end(), ostream_iterator<int,char,char_traits<char> >(cout," "));
cout << endl;
//
// A partition of the deque according to even/oddness.
//
partition(d2.begin(), d2.end(), is_even<int>());
//
// Output result of partition.
//
cout << "Partitioned values: " << "\t\t";
copy(d2.begin(), d2.end(), ostream_iterator<int,char,char_traits<char> >(cout," "));
cout << endl;
//
// A stable partition of the deque according to even/oddness.
//
stable_partition(d1.begin(), d1.end(), is_even<int>());
//
// Output result of partition.
//
cout << "Stable partitioned values: " << "\t";
copy(d1.begin(), d1.end(), ostream_iterator<int,char,char_traits<char> >(cout," "));
cout << endl;
return 0;
}