61 lines
2.3 KiB
C++
61 lines
2.3 KiB
C++
/**************************************************************************
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*
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* lex_comp.cpp - Example program compares to ranges lexicographically.
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*
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* $Id: lex_compare.cpp 648752 2008-04-16 17:01:56Z faridz $
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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 lexicographical_compare
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#include <functional> // for less
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#include <ios> // for boolalpha
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#include <iostream> // for cout, endl
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#include <vector> // for vector
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#include <examples.h>
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int main()
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{
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typedef std::vector<int, std::allocator<int> > Vector;
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const Vector::value_type d1[] = { 1, 3, 5, 32, 64 };
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const Vector::value_type d2[] = { 1, 3, 2, 43, 56 };
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// Create vectors.
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const Vector v1 (d1 + 0, d1 + sizeof d1 / sizeof *d1);
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const Vector v2 (d2 + 0, d2 + sizeof d1 / sizeof *d2);
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// Is v1 less than v2 (I think not).
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bool b1 = std::lexicographical_compare (v1.begin (), v1.end (),
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v2.begin (), v2.end ());
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// Is v2 less than v1 (yup, sure is).
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bool b2 = std::lexicographical_compare (v2.begin (), v2.end (),
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v1.begin (), v1.end (),
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std::less<int>());
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std::cout << std::boolalpha << b1
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<< " " << b2 << std::endl;
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return 0;
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}
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