70 lines
2.4 KiB
C++
70 lines
2.4 KiB
C++
/**************************************************************************
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*
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* unique.cpp - Example program of unique algorithm.
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*
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* $Id: unique.cpp 550991 2007-06-26 23:58:07Z sebor $
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*
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***************************************************************************
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*
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* Copyright 1994-2006 Rogue Wave Software.
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*
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**************************************************************************/
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#include <algorithm> // for copy, unique_copy
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#include <iostream> // for cout, endl
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#include <iterator> // for insert_iterator, ostream_iterator
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#include <vector> // for vector
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int main ()
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{
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// for convenience
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typedef std::vector<int, std::allocator<int> > Vector;
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typedef std::insert_iterator<Vector> Iter;
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typedef std::ostream_iterator<Vector::value_type, char,
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std::char_traits<char> > OSIter;
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// Initialize two vectors.
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const int a1 [] = {
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4, 5, 5, 9, -1, -1, -1, 3, 7, 5,
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5, 5, 6, 7, 7, 7, 4, 2, 1, 1
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};
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Vector v (a1, a1 + sizeof a1 / sizeof *a1);
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Vector result;
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// Create an insert_iterator for results.
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Iter ins (result, result.begin ());
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// Demonstrate includes.
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std::cout << "The vector: " << std::endl << " ";
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std::copy (v.begin (), v.end (), OSIter (std::cout, " "));
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// Find the unique elements.
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std::unique_copy(v.begin(), v.end(), ins);
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// Display the results.
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std::cout << "\n\nHas the following unique elements:\n ";
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std::copy (result.begin (), result.end (), OSIter (std::cout, " "));
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std::cout << std::endl;
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return 0;
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}
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