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
|
// -*- C++ -*-
// Copyright (C) 2005-2015 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.
/**
* This example shows how to use priority queues. It defines a
* function performing a sequence of operations on
* a generic container. It then calls this function with some containers.
*/
#include <ext/pb_ds/priority_queue.hpp>
#include <iostream>
#include <cassert>
using namespace std;
using namespace __gnu_pbds;
using namespace __gnu_pbds;
template<typename Cntnr>
void
some_op_sequence(Cntnr& r_c)
{
assert(r_c.empty());
assert(r_c.size() == 0);
for (size_t i = 0; i < 10; ++i)
r_c.push(i);
cout << endl << "All values in the container:" << endl;
for (typename Cntnr::const_iterator it = r_c.begin(); it != r_c.end();
++it)
cout <<* it << endl;
assert(!r_c.empty());
assert(r_c.size() == 10);
cout << "Popping all values: " << endl;
while (!r_c.empty())
{
cout << r_c.top() << endl;
r_c.pop();
}
assert(r_c.empty());
assert(r_c.size() == 0);
cout << endl;
}
void
priority_queue_link_regression_test_0()
{
{
/*
* Perform operations on a pairing-heap queue.
*/
cout << "Pairing heap" << endl;
__gnu_pbds::priority_queue<int, less<int>, pairing_heap_tag> c;
some_op_sequence(c);
}
{
/*
* Perform operations on a binomial-heap queue.
*/
cout << "Binomial heap" << endl;
__gnu_pbds::priority_queue<int, less<int>, binomial_heap_tag> c;
some_op_sequence(c);
}
{
/*
* Perform operations on a binomial-heap queue.
*/
cout << "Redundant-counter binomial heap" << endl;
__gnu_pbds::priority_queue<int, less<int>, rc_binomial_heap_tag> c;
some_op_sequence(c);
}
{
/*
* Perform operations on a binomial-heap queue.
*/
cout << "Binary heap" << endl;
__gnu_pbds::priority_queue<int, less<int>, binary_heap_tag> c;
some_op_sequence(c);
}
{
/*
* Perform operations on a thin-heap queue.
*/
cout << "Thin heap" << endl;
__gnu_pbds::priority_queue<int, less<int>, thin_heap_tag> c;
some_op_sequence(c);
}
}
void
priority_queue_link_regression_test_1()
{
{
/*
* Perform operations on a pairing-heap queue.
*/
cout << "Pairing heap" << endl;
__gnu_pbds::priority_queue<int, less<int>, pairing_heap_tag> c;
some_op_sequence(c);
}
{
/*
* Perform operations on a binomial-heap queue.
*/
cout << "Binomial heap" << endl;
__gnu_pbds::priority_queue<int, less<int>, binomial_heap_tag> c;
some_op_sequence(c);
}
{
/*
* Perform operations on a binomial-heap queue.
*/
cout << "Redundant-counter binomial heap" << endl;
__gnu_pbds::priority_queue<int, less<int>, rc_binomial_heap_tag> c;
some_op_sequence(c);
}
{
/*
* Perform operations on a binomial-heap queue.
*/
cout << "Binary heap" << endl;
__gnu_pbds::priority_queue<int, less<int>, binary_heap_tag> c;
some_op_sequence(c);
}
{
/*
* Perform operations on a thin-heap queue.
*/
cout << "Thin heap" << endl;
__gnu_pbds::priority_queue<int, less<int>, thin_heap_tag> c;
some_op_sequence(c);
}
}
int
main()
{
priority_queue_link_regression_test_0();
priority_queue_link_regression_test_1();
return 0;
}
|
