1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
// -*- C++ -*-
// Copyright (C) 2005, 2006 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 2, 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 COPYING. If not, write to
// the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
// MA 02111-1307, USA.
// As a special exception, you may use this file as part of a free
// software library without restriction. Specifically, if other files
// instantiate templates or use macros or inline functions from this
// file, or you compile this file and link it with other files to
// produce an executable, this file does not by itself cause the
// resulting executable to be covered by the GNU General Public
// License. This exception does not however invalidate any other
// reasons why the executable file might be covered by the GNU General
// Public License.
// 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 pairing_heap_.hpp
* Contains an implementation class for a pairing heap.
*/
/*
* Pairing heap:
* Michael L. Fredman, Robert Sedgewick, Daniel Dominic Sleator,
* and Robert Endre Tarjan, The Pairing Heap:
* A New Form of Self-Adjusting Heap, Algorithmica, 1(1):111-129, 1986.
*/
#include <ext/pb_ds/detail/cond_dealtor.hpp>
#include <ext/pb_ds/detail/type_utils.hpp>
#include <ext/pb_ds/detail/left_child_next_sibling_heap_/left_child_next_sibling_heap_.hpp>
#include <ext/pb_ds/detail/left_child_next_sibling_heap_/null_metadata.hpp>
namespace pb_ds
{
namespace detail
{
#ifdef PB_DS_PAIRING_HEAP_DEBUG_
#define PB_DS_DBG_ASSERT(X) assert(X)
#define PB_DS_DBG_VERIFY(X) assert(X)
#define PB_DS_DBG_ONLY(X) X
#else // #ifdef PB_DS_PAIRING_HEAP_DEBUG_
#define PB_DS_DBG_ASSERT(X)
#define PB_DS_DBG_VERIFY(X) {if((X)==0);}
#define PB_DS_DBG_ONLY(X) ;
#endif // #ifdef PB_DS_PAIRING_HEAP_DEBUG_
#define PB_DS_CLASS_T_DEC \
template<typename Value_Type, class Cmp_Fn, class Allocator>
#define PB_DS_CLASS_C_DEC \
pairing_heap_< \
Value_Type, \
Cmp_Fn, \
Allocator>
#ifdef PB_DS_LC_NS_HEAP_DEBUG_
#define PB_DS_BASE_C_DEC \
left_child_next_sibling_heap_< \
Value_Type, \
Cmp_Fn, \
null_left_child_next_sibling_heap_node_metadata, \
Allocator, \
false>
#else // #ifdef PB_DS_LC_NS_HEAP_DEBUG_
#define PB_DS_BASE_C_DEC \
left_child_next_sibling_heap_< \
Value_Type, \
Cmp_Fn, \
null_left_child_next_sibling_heap_node_metadata, \
Allocator>
#endif // #ifdef PB_DS_LC_NS_HEAP_DEBUG_
/**
* class description = "P4ri|\|g h3ap$">
**/
template<typename Value_Type, class Cmp_Fn, class Allocator>
class pairing_heap_ : public PB_DS_BASE_C_DEC
{
private:
typedef PB_DS_BASE_C_DEC base_type;
typedef typename base_type::node_pointer node_pointer;
public:
typedef typename Allocator::size_type size_type;
typedef typename Allocator::difference_type difference_type;
typedef Value_Type value_type;
typedef
typename Allocator::template rebind<
value_type>::other::pointer
pointer;
typedef
typename Allocator::template rebind<
value_type>::other::const_pointer
const_pointer;
typedef
typename Allocator::template rebind<
value_type>::other::reference
reference;
typedef
typename Allocator::template rebind<
value_type>::other::const_reference
const_reference;
typedef
typename PB_DS_BASE_C_DEC::const_point_iterator
const_point_iterator;
typedef typename PB_DS_BASE_C_DEC::point_iterator point_iterator;
typedef typename PB_DS_BASE_C_DEC::const_iterator const_iterator;
typedef typename PB_DS_BASE_C_DEC::iterator iterator;
typedef Cmp_Fn cmp_fn;
typedef Allocator allocator;
pairing_heap_();
pairing_heap_(const Cmp_Fn& r_cmp_fn);
pairing_heap_(const PB_DS_CLASS_C_DEC& other);
void
swap(PB_DS_CLASS_C_DEC& other);
~pairing_heap_();
inline point_iterator
push(const_reference r_val);
void
modify(point_iterator it, const_reference r_new_val);
inline const_reference
top() const;
void
pop();
void
erase(point_iterator it);
template<typename Pred>
size_type
erase_if(Pred pred);
template<typename Pred>
void
split(Pred pred, PB_DS_CLASS_C_DEC& other);
void
join(PB_DS_CLASS_C_DEC& other);
protected:
template<typename It>
void
copy_from_range(It first_it, It last_it);
#ifdef PB_DS_PAIRING_HEAP_DEBUG_
void
assert_valid() const;
#endif
private:
inline void
push_imp(node_pointer p_nd);
node_pointer
join_node_children(node_pointer p_nd);
node_pointer
forward_join(node_pointer p_nd, node_pointer p_next);
node_pointer
back_join(node_pointer p_nd, node_pointer p_next);
void
remove_node(node_pointer p_nd);
};
#include <ext/pb_ds/detail/pairing_heap_/constructors_destructor_fn_imps.hpp>
#include <ext/pb_ds/detail/pairing_heap_/debug_fn_imps.hpp>
#include <ext/pb_ds/detail/pairing_heap_/find_fn_imps.hpp>
#include <ext/pb_ds/detail/pairing_heap_/insert_fn_imps.hpp>
#include <ext/pb_ds/detail/pairing_heap_/erase_fn_imps.hpp>
#include <ext/pb_ds/detail/pairing_heap_/split_join_fn_imps.hpp>
#undef PB_DS_CLASS_C_DEC
#undef PB_DS_CLASS_T_DEC
#undef PB_DS_BASE_C_DEC
#undef PB_DS_DBG_ASSERT
#undef PB_DS_DBG_VERIFY
#undef PB_DS_DBG_ONLY
} // namespace detail
} // namespace pb_ds
|
