| Index: gcc/libstdc++-v3/testsuite/ext/pb_ds/example/basic_multiset.cc
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| diff --git a/gcc/libstdc++-v3/testsuite/ext/pb_ds/example/basic_multiset.cc b/gcc/libstdc++-v3/testsuite/ext/pb_ds/example/basic_multiset.cc
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| deleted file mode 100644
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| index 1127f7591179029dd223b5d24c0af80981716d37..0000000000000000000000000000000000000000
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| --- a/gcc/libstdc++-v3/testsuite/ext/pb_ds/example/basic_multiset.cc
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| +++ /dev/null
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| @@ -1,165 +0,0 @@
|
| -// -*- C++ -*-
|
| -
|
| -// Copyright (C) 2005, 2006, 2009 Free Software Foundation, Inc.
|
| -//
|
| -// This file is part of the GNU ISO C++ Library. This library is free
|
| -// software; you can redistribute it and/or modify it under the terms
|
| -// of the GNU General Public License as published by the Free Software
|
| -// Foundation; either version 3, or (at your option) any later
|
| -// version.
|
| -
|
| -// This library is distributed in the hope that it will be useful, but
|
| -// WITHOUT ANY WARRANTY; without even the implied warranty of
|
| -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
| -// General Public License for more details.
|
| -
|
| -// You should have received a copy of the GNU General Public License
|
| -// along with this library; see the file COPYING3. If not see
|
| -// <http://www.gnu.org/licenses/>.
|
| -
|
| -
|
| -// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
|
| -
|
| -// Permission to use, copy, modify, sell, and distribute this software
|
| -// is hereby granted without fee, provided that the above copyright
|
| -// notice appears in all copies, and that both that copyright notice
|
| -// and this permission notice appear in supporting documentation. None
|
| -// of the above authors, nor IBM Haifa Research Laboratories, make any
|
| -// representation about the suitability of this software for any
|
| -// purpose. It is provided "as is" without express or implied
|
| -// warranty.
|
| -
|
| -/**
|
| - * @file basic_multiset_example.cpp
|
| - * A basic example showing how to use multisets.
|
| - */
|
| -
|
| -
|
| -// This example shows how to use "multisets".
|
| -
|
| -// In this example we build a very simple priority queue that also can
|
| -// be queried if an entry contains (i.e., it is slightly similar to an
|
| -// associative container as well as a priority queue). The priority
|
| -// queue adapts a "multiset".
|
| -
|
| -// (Note that there are more efficient ways for implementing this than
|
| -// by adapting an associative container. This is just an example for
|
| -// "multisets".)
|
| -
|
| -#include <iostream>
|
| -#include <cassert>
|
| -#include <ext/pb_ds/assoc_container.hpp>
|
| -
|
| -using namespace std;
|
| -using namespace __gnu_pbds;
|
| -
|
| -// A simple priority queue that also supports an "contains" query.
|
| -class contains_pq
|
| -{
|
| -public:
|
| - // Pushes an integer.
|
| - void
|
| - push(int i);
|
| -
|
| - // Pops the largest integer and returns it.
|
| - int
|
| - pop();
|
| -
|
| - // Returns true iff i is contained in the container.
|
| - bool
|
| - contains(int i) const
|
| - { return m_tree.find(i) != m_tree.end(); }
|
| -
|
| - // Returns true iff empty.
|
| - bool
|
| - empty() const
|
| - { return m_tree.empty(); }
|
| -
|
| -private:
|
| - // This is the container type we adapt - a "multiset".
|
| - // It maps each integer to the number of times it logically appears.
|
| - typedef
|
| - tree<
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| - int,
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| - size_t,
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| - greater<
|
| - int> >
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| - tree_t;
|
| -
|
| -private:
|
| - tree_t m_tree;
|
| -};
|
| -
|
| -void
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| -contains_pq::
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| -push(int i)
|
| -{
|
| - // To push i, we insert to the "multiset" that i appears 0 times
|
| - // (which is a no-op if i already is contained), then increment the
|
| - // number of times i is contained by 1.
|
| - ++m_tree.insert(make_pair(i, 0)).first->second;
|
| -}
|
| -
|
| -int
|
| -contains_pq::
|
| -pop()
|
| -{
|
| - assert(!empty());
|
| -
|
| - // The element we need to pop must be the first one, since tree_t is
|
| - // an ordered container.
|
| - tree_t::iterator it = m_tree.begin();
|
| -
|
| - const int i = it->first;
|
| -
|
| - // Decrease the number of times the popped element appears in the
|
| - // container object. If it is 0 - we erase it.
|
| - if (--it->second == 0)
|
| - m_tree.erase(it);
|
| -
|
| - return i;
|
| -}
|
| -
|
| -int main()
|
| -{
|
| - contains_pq cpq;
|
| -
|
| - // First we push some elements.
|
| - cpq.push(4);
|
| - cpq.push(3);
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| - cpq.push(2);
|
| - cpq.push(1);
|
| - cpq.push(4);
|
| -
|
| - // Note that logically, 4 appears 2 times, and each of 1, 2, and 3
|
| - // appear once.
|
| - assert(cpq.contains(4));
|
| - assert(cpq.contains(3));
|
| - assert(cpq.contains(2));
|
| - assert(cpq.contains(1));
|
| -
|
| - // Now pop the topmost element - it should be 4.
|
| - assert(cpq.pop() == 4);
|
| -
|
| - // Now logically, each of 1, 2, 3, and 4 appear once.
|
| - assert(cpq.contains(4));
|
| -
|
| - // We pop the topmost element - it should be 4.
|
| - assert(cpq.pop() == 4);
|
| -
|
| - // 4 should not be contained any more.
|
| - assert(!cpq.contains(4));
|
| -
|
| - assert(cpq.contains(3));
|
| - assert(cpq.contains(2));
|
| - assert(cpq.contains(1));
|
| -
|
| - assert(cpq.pop() == 3);
|
| - assert(cpq.pop() == 2);
|
| - assert(cpq.pop() == 1);
|
| -
|
| - assert(cpq.empty());
|
| -
|
| - return 0;
|
| -}
|
| -
|
|
|