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<div class="headertitle"><div class="title">is_graph_bipartite2.cpp</div></div>
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</div><!--header-->
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<div class="contents">
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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span></div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="preprocessor">#include <cassert></span> </div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="preprocessor">#include <cstdint></span></div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="preprocessor">#include <iostream></span> </div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#include <queue></span> </div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#include <vector></span> </div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span></div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="keyword">namespace </span><a class="code hl_namespace" href="../../df/dce/namespacegraph.html">graph</a> {</div>
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<div class="foldopen" id="foldopen00037" data-start="{" data-end="}">
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"><a class="line" href="../../df/dce/namespacegraph.html#a8e1b547cd407c0774e63f0dc95cda9e7"> 37</a></span><span class="keywordtype">bool</span> <a class="code hl_function" href="../../df/dce/namespacegraph.html#a8e1b547cd407c0774e63f0dc95cda9e7">checkBipartite</a>(<span class="keyword">const</span> std::vector<std::vector<int64_t>> &<a class="code hl_namespace" href="../../df/dce/namespacegraph.html">graph</a>,</div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> int64_t index, std::vector<int64_t> *visited) {</div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> std::queue<int64_t> q; </div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> q.push(index); </div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> (*visited)[index] = 1; </div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> <span class="keywordflow">while</span> (q.size()) {</div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> int64_t u = q.front();</div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> q.pop();</div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <span class="keywordflow">for</span> (uint64_t i = 0; i < <a class="code hl_namespace" href="../../df/dce/namespacegraph.html">graph</a>[u].size(); i++) {</div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> int64_t v =</div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <a class="code hl_namespace" href="../../df/dce/namespacegraph.html">graph</a>[u][i]; </div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> <span class="keywordflow">if</span> (!(*visited)[v]) </div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> {</div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> (*visited)[v] =</div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> ((*visited)[u] == 1)</div>
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<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> ? -1</div>
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<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> : 1; </div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> q.push(v); </div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ((*visited)[v] ==</div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> (*visited)[u]) </div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> {</div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> }</div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> }</div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> }</div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> <span class="keywordflow">return</span> <span class="keyword">true</span>; </div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span>}</div>
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</div>
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span></div>
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<div class="foldopen" id="foldopen00076" data-start="{" data-end="}">
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<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"><a class="line" href="../../df/dce/namespacegraph.html#a84b0551489c613a681cc83b34450da4b"> 76</a></span><span class="keywordtype">bool</span> <a class="code hl_function" href="../../df/dce/namespacegraph.html#a84b0551489c613a681cc83b34450da4b">isBipartite</a>(<span class="keyword">const</span> std::vector<std::vector<int64_t>> &<a class="code hl_namespace" href="../../df/dce/namespacegraph.html">graph</a>) {</div>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> std::vector<int64_t> visited(</div>
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<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> <a class="code hl_namespace" href="../../df/dce/namespacegraph.html">graph</a>.size()); </div>
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<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> </div>
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<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> <span class="keywordflow">for</span> (uint64_t i = 0; i < <a class="code hl_namespace" href="../../df/dce/namespacegraph.html">graph</a>.size(); i++) {</div>
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<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> <span class="keywordflow">if</span> (!visited[i]) </div>
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<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> {</div>
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<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> <span class="keywordflow">if</span> (!<a class="code hl_function" href="../../df/dce/namespacegraph.html#a8e1b547cd407c0774e63f0dc95cda9e7">checkBipartite</a>(<a class="code hl_namespace" href="../../df/dce/namespacegraph.html">graph</a>, i, &visited)) {</div>
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<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> }</div>
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<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> }</div>
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<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> }</div>
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<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span>}</div>
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</div>
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<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span>} <span class="comment">// namespace graph</span></div>
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<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span></div>
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<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span><span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code hl_function" href="../../dd/d1e/generate__parentheses_8cpp.html#aa8dca7b867074164d5f45b0f3851269d">test</a>() {</div>
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<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> std::vector<std::vector<int64_t>> <a class="code hl_namespace" href="../../df/dce/namespacegraph.html">graph</a> = {{1, 3}, {0, 2}, {1, 3}, {0, 2}};</div>
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<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> </div>
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<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> assert(<a class="code hl_function" href="../../df/dce/namespacegraph.html#a84b0551489c613a681cc83b34450da4b">graph::isBipartite</a>(<a class="code hl_namespace" href="../../df/dce/namespacegraph.html">graph</a>) ==</div>
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<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> <span class="keyword">true</span>); </div>
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<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> </div>
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<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> std::vector<std::vector<int64_t>> graph_not_bipartite = {</div>
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<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> {1, 2, 3}, {0, 2}, {0, 1, 3}, {0, 2}};</div>
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<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> </div>
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<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> assert(<a class="code hl_function" href="../../df/dce/namespacegraph.html#a84b0551489c613a681cc83b34450da4b">graph::isBipartite</a>(graph_not_bipartite) ==</div>
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<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> <span class="keyword">false</span>); </div>
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<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> std::cout << <span class="stringliteral">"All tests have successfully passed!\n"</span>;</div>
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<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span>}</div>
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<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span><span class="keywordtype">int</span> <a class="code hl_function" href="../../dd/d1e/generate__parentheses_8cpp.html#gae66f6b31b5ad750f1fe042a706a4e3d4">main</a>() {</div>
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<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> <a class="code hl_function" href="../../dd/d1e/generate__parentheses_8cpp.html#aa8dca7b867074164d5f45b0f3851269d">test</a>(); <span class="comment">// run self-test implementations</span></div>
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<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span>}</div>
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<div class="ttc" id="agenerate__parentheses_8cpp_html_aa8dca7b867074164d5f45b0f3851269d"><div class="ttname"><a href="../../dd/d1e/generate__parentheses_8cpp.html#aa8dca7b867074164d5f45b0f3851269d">test</a></div><div class="ttdeci">static void test()</div><div class="ttdoc">Self-test implementations.</div><div class="ttdef"><b>Definition</b> <a href="../../dd/d1e/generate__parentheses_8cpp_source.html#l00082">generate_parentheses.cpp:82</a></div></div>
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<div class="ttc" id="agenerate__parentheses_8cpp_html_gae66f6b31b5ad750f1fe042a706a4e3d4"><div class="ttname"><a href="../../dd/d1e/generate__parentheses_8cpp.html#gae66f6b31b5ad750f1fe042a706a4e3d4">main</a></div><div class="ttdeci">int main()</div><div class="ttdoc">Main function.</div><div class="ttdef"><b>Definition</b> <a href="../../dd/d1e/generate__parentheses_8cpp_source.html#l00110">generate_parentheses.cpp:110</a></div></div>
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<div class="ttc" id="anamespacegraph_html"><div class="ttname"><a href="../../df/dce/namespacegraph.html">graph</a></div><div class="ttdoc">Graph Algorithms.</div></div>
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<div class="ttc" id="anamespacegraph_html_a84b0551489c613a681cc83b34450da4b"><div class="ttname"><a href="../../df/dce/namespacegraph.html#a84b0551489c613a681cc83b34450da4b">graph::isBipartite</a></div><div class="ttdeci">bool isBipartite(const std::vector< std::vector< int64_t > > &graph)</div><div class="ttdoc">returns true if the given graph is bipartite else returns false</div><div class="ttdef"><b>Definition</b> <a href="#l00076">is_graph_bipartite2.cpp:76</a></div></div>
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<div class="ttc" id="anamespacegraph_html_a8e1b547cd407c0774e63f0dc95cda9e7"><div class="ttname"><a href="../../df/dce/namespacegraph.html#a8e1b547cd407c0774e63f0dc95cda9e7">graph::checkBipartite</a></div><div class="ttdeci">bool checkBipartite(const std::vector< std::vector< int64_t > > &graph, int64_t index, std::vector< int64_t > *visited)</div><div class="ttdoc">function to check whether the passed graph is bipartite or not</div><div class="ttdef"><b>Definition</b> <a href="#l00037">is_graph_bipartite2.cpp:37</a></div></div>
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</html>
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