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<h2>C++ Reference</h2>
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<h1 style="color: #145A32;">C++ Reference: Graph</h1>
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<a href="io_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">// Copyright 2010-2021 Google LLC</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">// Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment">// you may not use this file except in compliance with the License.</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment">// You may obtain a copy of the License at</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment">// Unless required by applicable law or agreed to in writing, software</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment">// distributed under the License is distributed on an &quot;AS IS&quot; BASIS,</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment">// See the License for the specific language governing permissions and</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment">// limitations under the License.</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;</div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment">// A collections of i/o utilities for the Graph classes in ./graph.h.</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;</div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="preprocessor">#ifndef UTIL_GRAPH_IO_H_</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="preprocessor">#define UTIL_GRAPH_IO_H_</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;</div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="preprocessor">#include &lt;algorithm&gt;</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="preprocessor">#include &lt;cstdint&gt;</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="preprocessor">#include &lt;memory&gt;</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="preprocessor">#include &lt;numeric&gt;</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="preprocessor">#include &lt;string&gt;</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="preprocessor">#include &lt;vector&gt;</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="preprocessor">#include &quot;absl/status/status.h&quot;</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="preprocessor">#include &quot;absl/status/statusor.h&quot;</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span c
<div class="ttc" id="namespaceutil_html_a2d1e9c029dfaa2e8dfd58862836440b9ac932364714f74e3ca75990c8126019a1"><div class="ttname"><a href="namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9ac932364714f74e3ca75990c8126019a1">util::PRINT_GRAPH_ADJACENCY_LISTS</a></div><div class="ttdef"><b>Definition:</b> <a href="io_8h_source.html#l00044">io.h:44</a></div></div>
<div class="ttc" id="classutil_1_1_list_graph_html_aceb0938bcb2e8e5f37986d4cf8e3a955"><div class="ttname"><a href="classutil_1_1_list_graph.html#aceb0938bcb2e8e5f37986d4cf8e3a955">util::ListGraph::Head</a></div><div class="ttdeci">NodeIndexType Head(ArcIndexType arc) const</div><div class="ttdef"><b>Definition:</b> <a href="graph_8h_source.html#l01118">graph.h:1118</a></div></div>
<div class="ttc" id="namespaceutil_html"><div class="ttname"><a href="namespaceutil.html">util</a></div><div class="ttdef"><b>Definition:</b> <a href="connected__components_8h_source.html#l00056">connected_components.h:56</a></div></div>
<div class="ttc" id="classutil_1_1_base_graph_html_a4d3fc55a2fe209a908470199437cec9a"><div class="ttname"><a href="classutil_1_1_base_graph.html#a4d3fc55a2fe209a908470199437cec9a">util::BaseGraph::num_arcs</a></div><div class="ttdeci">ArcIndexType num_arcs() const</div><div class="ttdef"><b>Definition:</b> <a href="graph_8h_source.html#l00206">graph.h:206</a></div></div>
<div class="ttc" id="namespaceutil_html_ac1f20692bcd36ed6d01b970af9eb2972"><div class="ttname"><a href="namespaceutil.html#ac1f20692bcd36ed6d01b970af9eb2972">util::ReadGraphFile</a></div><div class="ttdeci">absl::StatusOr&lt; Graph * &gt; ReadGraphFile(const std::string &amp;filename, bool directed, std::vector&lt; int &gt; *num_nodes_with_color_or_null)</div><div class="ttdef"><b>Definition:</b> <a href="io_8h_source.html#l00132">io.h:132</a></div></div>
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<div class="ttc" id="classutil_1_1_list_graph_html_a7b505ba4a01bce342d049f5a8674da72"><div class="ttname"><a href="classutil_1_1_list_graph.html#a7b505ba4a01bce342d049f5a8674da72">util::ListGraph::AddArc</a></div><div class="ttdeci">ArcIndexType AddArc(NodeIndexType tail, NodeIndexType head)</div><div class="ttdef"><b>Definition:</b> <a href="graph_8h_source.html#l01141">graph.h:1141</a></div></div>
<div class="ttc" id="classutil_1_1_list_graph_html"><div class="ttname"><a href="classutil_1_1_list_graph.html">util::ListGraph</a></div><div class="ttdef"><b>Definition:</b> <a href="graph_8h_source.html#l00299">graph.h:299</a></div></div>
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<div class="ttc" id="namespaceutil_html_a372b5c94ec5d30f923449516ebc2a963"><div class="ttname"><a href="namespaceutil.html#a372b5c94ec5d30f923449516ebc2a963">util::GraphToString</a></div><div class="ttdeci">std::string GraphToString(const Graph &amp;graph, GraphToStringFormat format)</div><div class="ttdef"><b>Definition:</b> <a href="io_8h_source.html#l00107">io.h:107</a></div></div>
<div class="ttc" id="namespaceutil_html_a2f76166dbe0c4055a1f256235ad00478"><div class="ttname"><a href="namespaceutil.html#a2f76166dbe0c4055a1f256235ad00478">util::Graph</a></div><div class="ttdeci">ListGraph Graph</div><div class="ttdef"><b>Definition:</b> <a href="graph_8h_source.html#l02361">graph.h:2361</a></div></div>
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<div class="ttc" id="classutil_1_1_base_graph_html_a8a40f2c75615a26ba71e94dd7d42f481"><div class="ttname"><a href="classutil_1_1_base_graph.html#a8a40f2c75615a26ba71e94dd7d42f481">util::BaseGraph::AllNodes</a></div><div class="ttdeci">IntegerRange&lt; NodeIndex &gt; AllNodes() const</div><div class="ttdef"><b>Definition:</b> <a href="graph_8h_source.html#l00936">graph.h:936</a></div></div>
<div class="ttc" id="namespaceutil_html_a45fca0c4762006176ad5622ec40dea9c"><div class="ttname"><a href="namespaceutil.html#a45fca0c4762006176ad5622ec40dea9c">util::WriteGraphToFile</a></div><div class="ttdeci">absl::Status WriteGraphToFile(const Graph &amp;graph, const std::string &amp;filename, bool directed, const std::vector&lt; int &gt; &amp;num_nodes_with_color)</div><div class="ttdef"><b>Definition:</b> <a href="io_8h_source.html#l00235">io.h:235</a></div></div>
<div class="ttc" id="classutil_1_1_base_graph_html_a6a2df5042167b234f6dc3aed4acfa6c9"><div class="ttname"><a href="classutil_1_1_base_graph.html#a6a2df5042167b234f6dc3aed4acfa6c9">util::BaseGraph::num_nodes</a></div><div class="ttdeci">NodeIndexType num_nodes() const</div><div class="ttdef"><b>Definition:</b> <a href="graph_8h_source.html#l00203">graph.h:203</a></div></div>
<div class="ttc" id="namespaceutil_html_a2d1e9c029dfaa2e8dfd58862836440b9a59afa9bae775818b44690c5d14cdf8d0"><div class="ttname"><a href="namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9a59afa9bae775818b44690c5d14cdf8d0">util::PRINT_GRAPH_ARCS</a></div><div class="ttdef"><b>Definition:</b> <a href="io_8h_source.html#l00040">io.h:40</a></div></div>
<div class="ttc" id="classutil_1_1_base_graph_html_aec05ff3d270a5f888e1623c2a99ff2aa"><div class="ttname"><a href="classutil_1_1_base_graph.html#aec05ff3d270a5f888e1623c2a99ff2aa">util::BaseGraph&lt; NodeIndexType, ArcIndexType, false &gt;::NodeIndex</a></div><div class="ttdeci">NodeIndexType NodeIndex</div><div class="ttdef"><b>Definition:</b> <a href="graph_8h_source.html#l00191">graph.h:191</a></div></div>
<div class="ttc" id="classutil_1_1_base_graph_html_a92531459eff09455cfa63976f5024906"><div class="ttname"><a href="classutil_1_1_base_graph.html#a92531459eff09455cfa63976f5024906">util::BaseGraph&lt; NodeIndexType, ArcIndexType, false &gt;::ArcIndex</a></div><div class="ttdeci">ArcIndexType ArcIndex</div><div class="ttdef"><b>Definition:</b> <a href="graph_8h_source.html#l00192">graph.h:192</a></div></div>
<div class="ttc" id="namespaceutil_html_a2d1e9c029dfaa2e8dfd58862836440b9"><div class="ttname"><a href="namespaceutil.html#a2d1e9c029dfaa2e8dfd58862836440b9">util::GraphToStringFormat</a></div><div class="ttdeci">GraphToStringFormat</div><div class="ttdef"><b>Definition:</b> <a href="io_8h_source.html#l00038">io.h:38</a></div></div>
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