author | hgs |
Tue, 20 Jul 2010 16:35:53 +0530 | |
changeset 44 | 97b0fb8a2cc2 |
parent 0 | e4d67989cc36 |
permissions | -rw-r--r-- |
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// Copyright (C) 2001 Vladimir Prus <ghost@cs.msu.su> |
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// Copyright (C) 2001 Jeremy Siek <jsiek@cs.indiana.edu> |
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// Distributed under the Boost Software License, Version 1.0. (See |
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// accompanying file LICENSE_1_0.txt or copy at |
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// http://www.boost.org/LICENSE_1_0.txt) |
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/* |
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* © Portions copyright (c) 2006-2007 Nokia Corporation. All rights reserved. |
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*/ |
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#include <boost/graph/vector_as_graph.hpp> |
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#include <boost/graph/transitive_closure.hpp> |
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#include <iostream> |
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#include <boost/graph/vector_as_graph.hpp> |
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#include <boost/graph/adjacency_list.hpp> |
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#include <boost/graph/adjacency_list_io.hpp> |
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#include <boost/graph/graph_utility.hpp> |
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#include <cstdlib> |
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#include <ctime> |
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#include <boost/progress.hpp> |
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#ifdef __SYMBIAN32__ |
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#include "std_log_result.h" |
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#define LOG_FILENAME_LINE __FILE__, __LINE__ |
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#endif |
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unsigned int failed_tests = 0; |
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using namespace std; |
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using namespace boost; |
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void generate_graph(int n, double p, vector< vector<int> >& r1) |
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{ |
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static class { |
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public: |
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double operator()() { |
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return double(rand())/RAND_MAX; |
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} |
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} gen; |
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r1.clear(); |
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r1.resize(n); |
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for (int i = 0; i < n; ++i) |
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for (int j = 0; j < n; ++j) |
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if (gen() < p) |
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r1[i].push_back(j); |
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} |
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|
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template <class Graph> |
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typename graph_traits<Graph>::degree_size_type |
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num_incident(typename graph_traits<Graph>::vertex_descriptor u, |
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typename graph_traits<Graph>::vertex_descriptor v, |
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const Graph& g) |
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{ |
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typename graph_traits<Graph>::degree_size_type d = 0; |
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typename graph_traits<Graph>::out_edge_iterator i, i_end; |
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for (tie(i, i_end) = out_edges(u, g); i != i_end; ++i) |
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if (target(*i, g) == v) |
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++d; |
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return d; |
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} |
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|
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|
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// (i,j) is in E' iff j is reachable from i |
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// Hmm, is_reachable does not detect when there is a non-trivial path |
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// from i to i. It always returns true for is_reachable(i,i). |
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// This needs to be fixed/worked around. |
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template <typename Graph, typename GraphTC> |
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bool check_transitive_closure(Graph& g, GraphTC& tc) |
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{ |
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typename graph_traits<Graph>::vertex_iterator i, i_end; |
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for (tie(i, i_end) = vertices(g); i != i_end; ++i) { |
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typename graph_traits<Graph>::vertex_iterator j, j_end; |
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for (tie(j, j_end) = vertices(g); j != j_end; ++j) { |
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bool g_has_edge; |
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typename graph_traits<Graph>::edge_descriptor e_g; |
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typename graph_traits<Graph>::degree_size_type num_tc; |
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tie (e_g, g_has_edge) = edge(*i, *j, g); |
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num_tc = num_incident(*i, *j, tc); |
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if (*i == *j) { |
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if (g_has_edge) { |
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if (num_tc != 1) |
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return false; |
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} else { |
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bool can_reach = false; |
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typename graph_traits<Graph>::adjacency_iterator k, k_end; |
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for (tie(k, k_end) = adjacent_vertices(*i, g); k != k_end; ++k) { |
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std::vector<default_color_type> color_map_vec(num_vertices(g)); |
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if (is_reachable(*k, *i, g, &color_map_vec[0])) { |
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can_reach = true; |
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break; |
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} |
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} |
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if (can_reach) { |
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if (num_tc != 1) { |
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std::cout << "1. " << *i << std::endl; |
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return false; |
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} |
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} else { |
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if (num_tc != 0) { |
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std::cout << "2. " << *i << std::endl; |
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return false; |
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} |
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} |
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106 |
} |
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} else { |
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std::vector<default_color_type> color_map_vec(num_vertices(g)); |
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if (is_reachable(*i, *j, g, &color_map_vec[0])) { |
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if (num_tc != 1) |
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111 |
return false; |
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} else { |
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if (num_tc != 0) |
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return false; |
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} |
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} |
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} |
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} |
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return true; |
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120 |
} |
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121 |
|
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bool test(int n, double p) |
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123 |
{ |
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vector< vector<int> > g1, g1_tc; |
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generate_graph(n, p, g1); |
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cout << "Created graph with " << n << " vertices.\n"; |
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127 |
|
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vector< vector<int> > g1_c(g1); |
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129 |
|
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{ |
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progress_timer t; |
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cout << "transitive_closure" << endl; |
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transitive_closure(g1, g1_tc, vertex_index_map(identity_property_map())); |
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134 |
} |
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135 |
|
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if(check_transitive_closure(g1, g1_tc)) |
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137 |
return true; |
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138 |
else { |
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cout << "Original graph was "; |
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print_graph(g1, identity_property_map()); |
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cout << "Result is "; |
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print_graph(g1_tc, identity_property_map()); |
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143 |
return false; |
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144 |
} |
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145 |
} |
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146 |
|
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147 |
|
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148 |
int main() |
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{ |
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srand(time(0)); |
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151 |
static class { |
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public: |
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double operator()() { |
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return double(rand())/RAND_MAX; |
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} |
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} gen; |
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157 |
|
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158 |
|
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159 |
for (size_t i = 0; i < 100; ++i) { |
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int n = 0 + int(20*gen()); |
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double p = gen(); |
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162 |
if (!test(n, p)) { |
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cout << "Failed." << endl; |
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return 1; |
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165 |
} |
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166 |
} |
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167 |
cout << "Passed." << endl; |
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168 |
#ifdef __SYMBIAN32__ |
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169 |
if(failed_tests) |
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170 |
{ |
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171 |
std_log(LOG_FILENAME_LINE,"Result : Failed"); |
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172 |
assert_failed = true; |
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173 |
} |
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174 |
else |
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175 |
{ |
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176 |
std_log(LOG_FILENAME_LINE,"Result : Passed"); |
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177 |
} |
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178 |
std_log(LOG_FILENAME_LINE,"[End Test Case ]"); |
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179 |
#endif |
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180 |
#ifdef __SYMBIAN32__ |
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181 |
testResultXml("transitive_closure_test"); |
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182 |
close_log_file(); |
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183 |
#endif |
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184 |
return failed_tests; |
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185 |
} |
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|
186 |