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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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#include <algorithm>
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#include <vector>
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#include <cstdlib>
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#include <iterator>
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#include <functional>
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#include "cppunit/cppunit_proxy.h"
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#if !defined (STLPORT) || defined(_STLP_USE_NAMESPACES)
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using namespace std;
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#endif
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//
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// TestCase class
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//
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class PartitionTest : public CPPUNIT_NS::TestCase
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{
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CPPUNIT_TEST_SUITE(PartitionTest);
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CPPUNIT_TEST(ptition0);
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CPPUNIT_TEST(ptition1);
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CPPUNIT_TEST(stblptn0);
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CPPUNIT_TEST(stblptn1);
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CPPUNIT_TEST_SUITE_END();
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protected:
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void ptition0();
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void ptition1();
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void stblptn0();
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void stblptn1();
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struct less_n {
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less_n(int limit, size_t &nb_calls)
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: _limit(limit), _nb_calls(nb_calls) {}
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bool operator() (int a_) const {
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++_nb_calls;
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return a_ < _limit;
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}
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int _limit;
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size_t &_nb_calls;
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private:
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//explicitely defined as private to avoid warnings:
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less_n& operator = (less_n const&);
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};
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};
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CPPUNIT_TEST_SUITE_REGISTRATION(PartitionTest);
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//
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// tests implementation
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//
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void PartitionTest::stblptn0()
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{
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int numbers[6] = { 10, 5, 11, 20, 6, -2 };
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size_t nb_pred_calls = 0;
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stable_partition((int*)numbers, (int*)numbers + 6, less_n(10, nb_pred_calls));
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// 5 6 -2 10 11 20
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CPPUNIT_ASSERT(numbers[0]==5);
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CPPUNIT_ASSERT(numbers[1]==6);
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CPPUNIT_ASSERT(numbers[2]==-2);
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CPPUNIT_ASSERT(numbers[3]==10);
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CPPUNIT_ASSERT(numbers[4]==11);
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CPPUNIT_ASSERT(numbers[5]==20);
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//Complexity check:
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CPPUNIT_ASSERT( nb_pred_calls == sizeof(numbers) / sizeof(numbers[0]) );
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}
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void PartitionTest::stblptn1()
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{
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//5 5 2 10 0 12 5 0 0 19
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//5 5 2 10 0 5 0 0 12 19
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int numbers[] = { 5, 5, 2, 10, 0, 12, 5, 0, 0, 19 };
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vector <int> v1(numbers, numbers+10);
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size_t nb_pred_calls = 0;
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stable_partition(v1.begin(), v1.end(), less_n(11, nb_pred_calls));
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CPPUNIT_ASSERT(v1[0]==5);
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CPPUNIT_ASSERT(v1[1]==5);
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CPPUNIT_ASSERT(v1[2]==2);
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CPPUNIT_ASSERT(v1[3]==10);
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CPPUNIT_ASSERT(v1[4]==0);
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CPPUNIT_ASSERT(v1[5]==5);
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CPPUNIT_ASSERT(v1[6]==0);
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CPPUNIT_ASSERT(v1[7]==0);
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CPPUNIT_ASSERT(v1[8]==12);
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CPPUNIT_ASSERT(v1[9]==19);
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CPPUNIT_ASSERT( nb_pred_calls == v1.size() );
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}
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void PartitionTest::ptition0()
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{
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int numbers[6] = { 6, 12, 3, 10, 1, 20 };
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size_t nb_pred_calls = 0;
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// 6 1 3 10 12 20
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partition((int*)numbers, (int*)numbers + 6, less_n(10, nb_pred_calls));
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CPPUNIT_ASSERT(numbers[0]==6);
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CPPUNIT_ASSERT(numbers[1]==1);
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CPPUNIT_ASSERT(numbers[2]==3);
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CPPUNIT_ASSERT(numbers[3]==10);
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CPPUNIT_ASSERT(numbers[4]==12);
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CPPUNIT_ASSERT(numbers[5]==20);
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CPPUNIT_ASSERT( nb_pred_calls == sizeof(numbers) / sizeof(numbers[0]) );
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}
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void PartitionTest::ptition1()
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{
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// 19 3 11 14 10 19 8 17 9 6
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// 6 3 9 8 10 19 14 17 11 19
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int numbers[10] ={ 19, 3, 11, 14, 10, 19, 8, 17, 9, 6 };
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vector <int> v1(numbers, numbers+10);
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size_t nb_pred_calls = 0;
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partition(v1.begin(), v1.end(), less_n(11, nb_pred_calls));
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CPPUNIT_ASSERT(v1[0]==6);
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CPPUNIT_ASSERT(v1[1]==3);
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CPPUNIT_ASSERT(v1[2]==9);
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CPPUNIT_ASSERT(v1[3]==8);
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CPPUNIT_ASSERT(v1[4]==10);
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CPPUNIT_ASSERT(v1[5]==19);
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CPPUNIT_ASSERT(v1[6]==14);
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CPPUNIT_ASSERT(v1[7]==17);
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CPPUNIT_ASSERT(v1[8]==11);
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CPPUNIT_ASSERT(v1[9]==19);
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CPPUNIT_ASSERT( nb_pred_calls == v1.size() );
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}
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