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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<div id="projectbrief">A library focused on algorithms on linear arrangements of graphs.</div>
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<li class="navelem"><a class="el" href="dir_8f631ac29b6730c95cdd9d587311e2d3.html">lal</a></li><li class="navelem"><a class="el" href="dir_451d9360bed40d6c41f5da8ac2577526.html">generate</a></li> </ul>
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<div class="headertitle"><div class="title">rand_arrangements.hpp</div></div>
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<div class="contents">
<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">/*********************************************************************</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment"> *</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"> * Linear Arrangement Library - A library that implements a collection</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"> * algorithms for linear arrangments of graphs.</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment"> *</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment"> * Copyright (C) 2019 - 2021</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment"> *</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="comment"> * This file is part of Linear Arrangement Library. To see the full code</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment"> * visit the webpage:</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="comment"> * https://github.com/lluisalemanypuig/linear-arrangement-library.git</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="comment"> *</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="comment"> * Linear Arrangement Library is free software: you can redistribute it</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="comment"> * and/or modify it under the terms of the GNU Affero General Public License</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="comment"> * as published by the Free Software Foundation, either version 3 of the</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="comment"> * License, or (at your option) any later version.</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="comment"> *</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="comment"> * Linear Arrangement Library is distributed in the hope that it will be</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="comment"> * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="comment"> * GNU Affero General Public License for more details.</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="comment"> *</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="comment"> * You should have received a copy of the GNU Affero General Public License</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="comment"> * along with Linear Arrangement Library. If not, see <http://www.gnu.org/licenses/>.</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="comment"> *</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="comment"> * Contact:</span></div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="comment"> *</span></div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="comment"> * Lluís Alemany Puig (lalemany@cs.upc.edu)</span></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="comment"> * LARCA (Laboratory for Relational Algorithmics, Complexity and Learning)</span></div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="comment"> * CQL (Complexity and Quantitative Linguistics Lab)</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="comment"> * Jordi Girona St 1-3, Campus Nord UPC, 08034 Barcelona. CATALONIA, SPAIN</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span><span class="comment"> * Webpage: https://cqllab.upc.edu/people/lalemany/</span></div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span><span class="comment"> *</span></div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span><span class="comment"> * Ramon Ferrer i Cancho (rferrericancho@cs.upc.edu)</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span><span class="comment"> * LARCA (Laboratory for Relational Algorithmics, Complexity and Learning)</span></div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span><span class="comment"> * CQL (Complexity and Quantitative Linguistics Lab)</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span><span class="comment"> * Office S124, Omega building</span></div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span><span class="comment"> * Jordi Girona St 1-3, Campus Nord UPC, 08034 Barcelona. CATALONIA, SPAIN</span></div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span><span class="comment"> * Webpage: https://cqllab.upc.edu/people/rferrericancho/</span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span><span class="comment"> *</span></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span><span class="comment"> ********************************************************************/</span></div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> </div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span><span class="preprocessor">#pragma once</span></div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> </div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span><span class="comment">// C++ includes</span></div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span><span class="preprocessor">#include <algorithm></span></div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span><span class="preprocessor">#include <random></span></div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> </div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span><span class="comment">// lal includes</span></div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span><span class="preprocessor">#include <lal/graphs/graph.hpp></span></div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> </div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespacelal.html">lal</a> {</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span><span class="keyword">namespace </span>generate {</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> </div>
<div class="foldopen" id="foldopen00082" data-start="{" data-end="};">
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"><a class="line" href="classlal_1_1generate_1_1rand__arrangements.html"> 82</a></span><span class="keyword">class </span><a class="code hl_class" href="classlal_1_1generate_1_1rand__arrangements.html">rand_arrangements</a> {</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span><span class="keyword">public</span>:</div>
<div class="foldopen" id="foldopen00090" data-start="{" data-end="}">
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"><a class="line" href="classlal_1_1generate_1_1rand__arrangements.html#a692df8f9434651b7211c15abde9442d7"> 90</a></span> <a class="code hl_function" href="classlal_1_1generate_1_1rand__arrangements.html#a692df8f9434651b7211c15abde9442d7">rand_arrangements</a>(<span class="keyword">const</span> <a class="code hl_class" href="classlal_1_1graphs_1_1graph.html">lal::graphs::graph</a>& g, uint32_t seed = 0) noexcept</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> : <a class="code hl_class" href="classlal_1_1generate_1_1rand__arrangements.html">rand_arrangements</a>(g.get_num_nodes(), seed)</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> { }</div>
</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> </div>
<div class="foldopen" id="foldopen00100" data-start="{" data-end="}">
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"><a class="line" href="classlal_1_1generate_1_1rand__arrangements.html#a0fb0ff7fa398127d22cacb50aef9e32d"> 100</a></span> <a class="code hl_function" href="classlal_1_1generate_1_1rand__arrangements.html#a0fb0ff7fa398127d22cacb50aef9e32d">rand_arrangements</a>(uint32_t n, uint32_t seed = 0) noexcept</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> : <a class="code hl_variable" href="classlal_1_1generate_1_1rand__arrangements.html#a70a43b8485694ba9b7ae31318ab22573">m_n</a>(n),</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <a class="code hl_variable" href="classlal_1_1generate_1_1rand__arrangements.html#abaa7416011c44a0c8786d1ef6ca30f80">m_arr</a>(<a class="code hl_typedef" href="namespacelal.html#afa9a90a785b8b5461c516b8a3971c558">linear_arrangement</a>(<a class="code hl_variable" href="classlal_1_1generate_1_1rand__arrangements.html#a70a43b8485694ba9b7ae31318ab22573">m_n</a>))</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> {</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> <span class="keywordflow">if</span> (seed == 0) {</div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> std::random_device rd;</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> <a class="code hl_variable" href="classlal_1_1generate_1_1rand__arrangements.html#aca0afad3568a52e48fd971ad1dfde2ed">m_gen</a> = std::mt19937(rd());</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> }</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> <a class="code hl_variable" href="classlal_1_1generate_1_1rand__arrangements.html#aca0afad3568a52e48fd971ad1dfde2ed">m_gen</a> = std::mt19937(seed);</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> }</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> std::iota(<a class="code hl_variable" href="classlal_1_1generate_1_1rand__arrangements.html#abaa7416011c44a0c8786d1ef6ca30f80">m_arr</a>.begin(), <a class="code hl_variable" href="classlal_1_1generate_1_1rand__arrangements.html#abaa7416011c44a0c8786d1ef6ca30f80">m_arr</a>.end(), 0);</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> }</div>
</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> </div>
<div class="foldopen" id="foldopen00115" data-start="{" data-end="}">
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"><a class="line" href="classlal_1_1generate_1_1rand__arrangements.html#a96d586ed8fd108dd0be613fb9e7df0cf"> 115</a></span> <span class="keyword">const</span> <a class="code hl_typedef" href="namespacelal.html#afa9a90a785b8b5461c516b8a3971c558">linear_arrangement</a>& <a class="code hl_function" href="classlal_1_1generate_1_1rand__arrangements.html#a96d586ed8fd108dd0be613fb9e7df0cf">get_arrangement</a>() noexcept {</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> std::shuffle(<a class="code hl_variable" href="classlal_1_1generate_1_1rand__arrangements.html#abaa7416011c44a0c8786d1ef6ca30f80">m_arr</a>.begin(), <a class="code hl_variable" href="classlal_1_1generate_1_1rand__arrangements.html#abaa7416011c44a0c8786d1ef6ca30f80">m_arr</a>.end(), <a class="code hl_variable" href="classlal_1_1generate_1_1rand__arrangements.html#aca0afad3568a52e48fd971ad1dfde2ed">m_gen</a>);</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> <span class="keywordflow">return</span> <a class="code hl_variable" href="classlal_1_1generate_1_1rand__arrangements.html#abaa7416011c44a0c8786d1ef6ca30f80">m_arr</a>;</div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> }</div>
</div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> </div>
<div class="foldopen" id="foldopen00121" data-start="{" data-end="}">
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"><a class="line" href="classlal_1_1generate_1_1rand__arrangements.html#a0ed61c0894dc244fadab517dc43f6172"> 121</a></span> <span class="keyword">inline</span> <span class="keyword">const</span> <a class="code hl_typedef" href="namespacelal.html#afa9a90a785b8b5461c516b8a3971c558">linear_arrangement</a>& <a class="code hl_function" href="classlal_1_1generate_1_1rand__arrangements.html#a0ed61c0894dc244fadab517dc43f6172">yield_arrangement</a>() noexcept {</div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> <span class="keywordflow">return</span> <a class="code hl_function" href="classlal_1_1generate_1_1rand__arrangements.html#a96d586ed8fd108dd0be613fb9e7df0cf">get_arrangement</a>();</div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> }</div>
</div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> </div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"><a class="line" href="classlal_1_1generate_1_1rand__arrangements.html#a70a43b8485694ba9b7ae31318ab22573"> 127</a></span> <span class="keyword">const</span> uint32_t <a class="code hl_variable" href="classlal_1_1generate_1_1rand__arrangements.html#a70a43b8485694ba9b7ae31318ab22573">m_n</a>;</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"><a class="line" href="classlal_1_1generate_1_1rand__arrangements.html#aca0afad3568a52e48fd971ad1dfde2ed"> 129</a></span> std::mt19937 <a class="code hl_variable" href="classlal_1_1generate_1_1rand__arrangements.html#aca0afad3568a52e48fd971ad1dfde2ed">m_gen</a>;</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"><a class="line" href="classlal_1_1generate_1_1rand__arrangements.html#abaa7416011c44a0c8786d1ef6ca30f80"> 135</a></span> <a class="code hl_typedef" href="namespacelal.html#afa9a90a785b8b5461c516b8a3971c558">linear_arrangement</a> <a class="code hl_variable" href="classlal_1_1generate_1_1rand__arrangements.html#abaa7416011c44a0c8786d1ef6ca30f80">m_arr</a>;</div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span>};</div>
</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> </div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span>} <span class="comment">// -- namespace generate</span></div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span>} <span class="comment">// -- namespace lal</span></div>
<div class="ttc" id="aclasslal_1_1generate_1_1rand__arrangements_html"><div class="ttname"><a href="classlal_1_1generate_1_1rand__arrangements.html">lal::generate::rand_arrangements</a></div><div class="ttdoc">Random generation of arrangements of any graph.</div><div class="ttdef"><b>Definition</b> rand_arrangements.hpp:82</div></div>
<div class="ttc" id="aclasslal_1_1generate_1_1rand__arrangements_html_a0ed61c0894dc244fadab517dc43f6172"><div class="ttname"><a href="classlal_1_1generate_1_1rand__arrangements.html#a0ed61c0894dc244fadab517dc43f6172">lal::generate::rand_arrangements::yield_arrangement</a></div><div class="ttdeci">const linear_arrangement & yield_arrangement() noexcept</div><div class="ttdoc">Returns a linear arrangement constructed uniformly at random.</div><div class="ttdef"><b>Definition</b> rand_arrangements.hpp:121</div></div>
<div class="ttc" id="aclasslal_1_1generate_1_1rand__arrangements_html_a0fb0ff7fa398127d22cacb50aef9e32d"><div class="ttname"><a href="classlal_1_1generate_1_1rand__arrangements.html#a0fb0ff7fa398127d22cacb50aef9e32d">lal::generate::rand_arrangements::rand_arrangements</a></div><div class="ttdeci">rand_arrangements(uint32_t n, uint32_t seed=0) noexcept</div><div class="ttdoc">Constructor with number of vertices.</div><div class="ttdef"><b>Definition</b> rand_arrangements.hpp:100</div></div>
<div class="ttc" id="aclasslal_1_1generate_1_1rand__arrangements_html_a692df8f9434651b7211c15abde9442d7"><div class="ttname"><a href="classlal_1_1generate_1_1rand__arrangements.html#a692df8f9434651b7211c15abde9442d7">lal::generate::rand_arrangements::rand_arrangements</a></div><div class="ttdeci">rand_arrangements(const lal::graphs::graph &g, uint32_t seed=0) noexcept</div><div class="ttdoc">Constructor with graph.</div><div class="ttdef"><b>Definition</b> rand_arrangements.hpp:90</div></div>
<div class="ttc" id="aclasslal_1_1generate_1_1rand__arrangements_html_a70a43b8485694ba9b7ae31318ab22573"><div class="ttname"><a href="classlal_1_1generate_1_1rand__arrangements.html#a70a43b8485694ba9b7ae31318ab22573">lal::generate::rand_arrangements::m_n</a></div><div class="ttdeci">const uint32_t m_n</div><div class="ttdoc">Number of vertices.</div><div class="ttdef"><b>Definition</b> rand_arrangements.hpp:127</div></div>
<div class="ttc" id="aclasslal_1_1generate_1_1rand__arrangements_html_a96d586ed8fd108dd0be613fb9e7df0cf"><div class="ttname"><a href="classlal_1_1generate_1_1rand__arrangements.html#a96d586ed8fd108dd0be613fb9e7df0cf">lal::generate::rand_arrangements::get_arrangement</a></div><div class="ttdeci">const linear_arrangement & get_arrangement() noexcept</div><div class="ttdoc">Returns a linear arrangement constructed uniformly at random.</div><div class="ttdef"><b>Definition</b> rand_arrangements.hpp:115</div></div>
<div class="ttc" id="aclasslal_1_1generate_1_1rand__arrangements_html_abaa7416011c44a0c8786d1ef6ca30f80"><div class="ttname"><a href="classlal_1_1generate_1_1rand__arrangements.html#abaa7416011c44a0c8786d1ef6ca30f80">lal::generate::rand_arrangements::m_arr</a></div><div class="ttdeci">linear_arrangement m_arr</div><div class="ttdoc">The arrangement generated by this class.</div><div class="ttdef"><b>Definition</b> rand_arrangements.hpp:135</div></div>
<div class="ttc" id="aclasslal_1_1generate_1_1rand__arrangements_html_aca0afad3568a52e48fd971ad1dfde2ed"><div class="ttname"><a href="classlal_1_1generate_1_1rand__arrangements.html#aca0afad3568a52e48fd971ad1dfde2ed">lal::generate::rand_arrangements::m_gen</a></div><div class="ttdeci">std::mt19937 m_gen</div><div class="ttdoc">Random number generator.</div><div class="ttdef"><b>Definition</b> rand_arrangements.hpp:129</div></div>
<div class="ttc" id="aclasslal_1_1graphs_1_1graph_html"><div class="ttname"><a href="classlal_1_1graphs_1_1graph.html">lal::graphs::graph</a></div><div class="ttdoc">Abstract class for graphs.</div><div class="ttdef"><b>Definition</b> graph.hpp:69</div></div>
<div class="ttc" id="anamespacelal_html"><div class="ttname"><a href="namespacelal.html">lal</a></div><div class="ttdoc">Main namespace of the library.</div><div class="ttdef"><b>Definition</b> definitions.hpp:48</div></div>
<div class="ttc" id="anamespacelal_html_afa9a90a785b8b5461c516b8a3971c558"><div class="ttname"><a href="namespacelal.html#afa9a90a785b8b5461c516b8a3971c558">lal::linear_arrangement</a></div><div class="ttdeci">std::vector< position > linear_arrangement</div><div class="ttdoc">A linear arrangement of the nodes of a graph.</div><div class="ttdef"><b>Definition</b> definitions.hpp:72</div></div>
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