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<div class="headertitle"><div class="title">bidirectional_dijkstra.cpp</div></div>
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<div class="contents">
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<a href="../../d7/d07/bidirectional__dijkstra_8cpp.html">Go to the documentation of this file.</a><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="l00015" name="l00015"></a><span class="lineno"> 15</span> </div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="preprocessor">#include <cassert></span> </div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="preprocessor">#include <cstdint></span></div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="preprocessor">#include <iostream></span> </div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="preprocessor">#include <limits></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 <utility></span> </div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#include <vector></span> </div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> </div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"><a class="line" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a330a2b0a904f01802ada1f8f3b28e76c"> 24</a></span><span class="keyword">constexpr</span> int64_t <a class="code hl_variable" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a330a2b0a904f01802ada1f8f3b28e76c">INF</a> = std::numeric_limits<int64_t>::max();</div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span></div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</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="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span><span class="keyword">namespace </span><a class="code hl_namespace" href="../../d4/d13/namespacebidirectional__dijkstra.html">bidirectional_dijkstra</a> {</div>
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<div class="foldopen" id="foldopen00046" data-start="{" data-end="}">
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"><a class="line" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a69172365aebde9be1997157f6f80e0cf"> 46</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a69172365aebde9be1997157f6f80e0cf">addEdge</a>(std::vector<std::vector<std::pair<uint64_t, uint64_t>>> *adj1,</div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> std::vector<std::vector<std::pair<uint64_t, uint64_t>>> *adj2,</div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> uint64_t u, uint64_t v, uint64_t w) {</div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> (*adj1)[u - 1].push_back(std::make_pair(v - 1, w));</div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> (*adj2)[v - 1].push_back(std::make_pair(u - 1, w));</div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> <span class="comment">// (*adj)[v - 1].push_back(std::make_pair(u - 1, w));</span></div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span>}</div>
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</div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span></div>
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<div class="foldopen" id="foldopen00062" data-start="{" data-end="}">
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"><a class="line" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a22f1b7277e1dd4190f25014b48487ce6"> 62</a></span>uint64_t <a class="code hl_function" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a22f1b7277e1dd4190f25014b48487ce6">Shortest_Path_Distance</a>(</div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> <span class="keyword">const</span> std::vector<uint64_t> &workset_,</div>
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> <span class="keyword">const</span> std::vector<std::vector<uint64_t>> &distance_) {</div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> int64_t distance = <a class="code hl_variable" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a330a2b0a904f01802ada1f8f3b28e76c">INF</a>;</div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> <span class="keywordflow">for</span> (uint64_t i : workset_) {</div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> <span class="keywordflow">if</span> (distance_[0][i] + distance_[1][i] < distance) {</div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> distance = distance_[0][i] + distance_[1][i];</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 class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> }</div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> <span class="keywordflow">return</span> distance;</div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span>}</div>
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</div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span></div>
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<div class="foldopen" id="foldopen00087" data-start="{" data-end="}">
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<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"><a class="line" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a1b2df3d52a403ad46523ab90d3a723c1"> 87</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a1b2df3d52a403ad46523ab90d3a723c1">Bidijkstra</a>(std::vector<std::vector<std::pair<uint64_t, uint64_t>>> *adj1,</div>
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<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> std::vector<std::vector<std::pair<uint64_t, uint64_t>>> *adj2,</div>
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<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> uint64_t s, uint64_t t) {</div>
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<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> uint64_t n = adj1->size();</div>
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<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span></div>
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<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> std::vector<std::vector<uint64_t>> dist(2, std::vector<uint64_t>(n, <a class="code hl_variable" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a330a2b0a904f01802ada1f8f3b28e76c">INF</a>));</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="l00099" name="l00099"></a><span class="lineno"> 99</span></div>
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<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> std::vector<</div>
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<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> std::priority_queue<std::pair<uint64_t, uint64_t>,</div>
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<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> std::vector<std::pair<uint64_t, uint64_t>>,</div>
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<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> std::greater<std::pair<uint64_t, uint64_t>>>></div>
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<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> pq(2);</div>
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<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> std::vector<uint64_t> workset(n);</div>
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<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> std::vector<bool> visited(n);</div>
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<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span></div>
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<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> pq[0].push(std::make_pair(0, s));</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="l00116" name="l00116"></a><span class="lineno"> 116</span> dist[0][s] = 0;</div>
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<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span></div>
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<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> pq[1].push(std::make_pair(0, t));</div>
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<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span></div>
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<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> dist[1][t] = 0;</div>
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<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> </div>
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<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> <span class="keywordflow">while</span> (<span class="keyword">true</span>) {</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="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> <span class="comment">// If pq[0].size() is equal to zero then the node/ vertex is not</span></div>
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<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> <span class="comment">// reachable from s</span></div>
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<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> <span class="keywordflow">if</span> (pq[0].size() == 0) {</div>
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<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> <span class="keywordflow">break</span>;</div>
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<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> }</div>
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<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> uint64_t currentNode = pq[0].top().second;</div>
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<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span></div>
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<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> uint64_t currentDist = pq[0].top().first;</div>
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<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> </div>
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<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> pq[0].pop();</div>
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<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span></div>
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<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> <span class="keywordflow">for</span> (std::pair<int, int> edge : (*adj1)[currentNode]) {</div>
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<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> <span class="keywordflow">if</span> (currentDist + edge.second < dist[0][edge.first]) {</div>
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<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> dist[0][edge.first] = currentDist + edge.second;</div>
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<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> pq[0].push(std::make_pair(dist[0][edge.first], edge.first));</div>
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<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> }</div>
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<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> }</div>
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<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> <span class="comment">// store the processed node/ vertex</span></div>
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<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> workset.push_back(currentNode);</div>
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<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span></div>
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<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> <span class="keywordflow">if</span> (visited[currentNode] == 1) {</div>
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<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> <span class="keywordflow">return</span> <a class="code hl_function" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a22f1b7277e1dd4190f25014b48487ce6">Shortest_Path_Distance</a>(workset, dist);</div>
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<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> }</div>
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<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> visited[currentNode] = <span class="keyword">true</span>;</div>
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<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> </div>
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<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> <span class="comment">// If pq[1].size() is equal to zero then the node/ vertex is not</span></div>
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<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> <span class="comment">// reachable from t</span></div>
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<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> <span class="keywordflow">if</span> (pq[1].size() == 0) {</div>
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<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> <span class="keywordflow">break</span>;</div>
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<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> }</div>
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<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> currentNode = pq[1].top().second;</div>
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<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span></div>
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<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> currentDist = pq[1].top().first;</div>
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<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span> </div>
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<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> pq[1].pop();</div>
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<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span></div>
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<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> <span class="keywordflow">for</span> (std::pair<int, int> edge : (*adj2)[currentNode]) {</div>
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<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span> <span class="keywordflow">if</span> (currentDist + edge.second < dist[1][edge.first]) {</div>
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<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> dist[1][edge.first] = currentDist + edge.second;</div>
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<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span> pq[1].push(std::make_pair(dist[1][edge.first], edge.first));</div>
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<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> }</div>
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<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> }</div>
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<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> <span class="comment">// store the processed node/ vertex</span></div>
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<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> workset.push_back(currentNode);</div>
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<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span></div>
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<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span> <span class="keywordflow">if</span> (visited[currentNode] == 1) {</div>
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<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> <span class="keywordflow">return</span> <a class="code hl_function" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a22f1b7277e1dd4190f25014b48487ce6">Shortest_Path_Distance</a>(workset, dist);</div>
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<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> }</div>
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<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span> visited[currentNode] = <span class="keyword">true</span>;</div>
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<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span> }</div>
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<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> <span class="keywordflow">return</span> -1;</div>
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<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span>}</div>
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</div>
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<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span>} <span class="comment">// namespace bidirectional_dijkstra</span></div>
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<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span>} <span class="comment">// namespace graph</span></div>
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<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span></div>
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<div class="foldopen" id="foldopen00200" data-start="{" data-end="}">
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<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"><a class="line" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a483bb8ccf42aaf7375a83e91490eda1e"> 200</a></span><span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code hl_function" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a483bb8ccf42aaf7375a83e91490eda1e">tests</a>() {</div>
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<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span> std::cout << <span class="stringliteral">"Initiatinig Predefined Tests..."</span> << std::endl;</div>
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<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span> std::cout << <span class="stringliteral">"Initiating Test 1..."</span> << std::endl;</div>
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<div class="line"><a id="l00203" name="l00203"></a><span class="lineno"> 203</span> std::vector<std::vector<std::pair<uint64_t, uint64_t>>> adj1_1(</div>
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<div class="line"><a id="l00204" name="l00204"></a><span class="lineno"> 204</span> 4, std::vector<std::pair<uint64_t, uint64_t>>());</div>
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<div class="line"><a id="l00205" name="l00205"></a><span class="lineno"> 205</span> std::vector<std::vector<std::pair<uint64_t, uint64_t>>> adj1_2(</div>
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<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span> 4, std::vector<std::pair<uint64_t, uint64_t>>());</div>
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<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span> <a class="code hl_function" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a69172365aebde9be1997157f6f80e0cf">graph::bidirectional_dijkstra::addEdge</a>(&adj1_1, &adj1_2, 1, 2, 1);</div>
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<div class="line"><a id="l00208" name="l00208"></a><span class="lineno"> 208</span> <a class="code hl_function" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a69172365aebde9be1997157f6f80e0cf">graph::bidirectional_dijkstra::addEdge</a>(&adj1_1, &adj1_2, 4, 1, 2);</div>
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|
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span> <a class="code hl_function" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a69172365aebde9be1997157f6f80e0cf">graph::bidirectional_dijkstra::addEdge</a>(&adj1_1, &adj1_2, 2, 3, 2);</div>
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<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"> 210</span> <a class="code hl_function" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a69172365aebde9be1997157f6f80e0cf">graph::bidirectional_dijkstra::addEdge</a>(&adj1_1, &adj1_2, 1, 3, 5);</div>
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<div class="line"><a id="l00211" name="l00211"></a><span class="lineno"> 211</span> </div>
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<div class="line"><a id="l00212" name="l00212"></a><span class="lineno"> 212</span> uint64_t s = 1, t = 3;</div>
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<div class="line"><a id="l00213" name="l00213"></a><span class="lineno"> 213</span> assert(<a class="code hl_function" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a1b2df3d52a403ad46523ab90d3a723c1">graph::bidirectional_dijkstra::Bidijkstra</a>(&adj1_1, &adj1_2, s - 1,</div>
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<div class="line"><a id="l00214" name="l00214"></a><span class="lineno"> 214</span> t - 1) == 3);</div>
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<div class="line"><a id="l00215" name="l00215"></a><span class="lineno"> 215</span> std::cout << <span class="stringliteral">"Test 1 Passed..."</span> << std::endl;</div>
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<div class="line"><a id="l00216" name="l00216"></a><span class="lineno"> 216</span> </div>
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<div class="line"><a id="l00217" name="l00217"></a><span class="lineno"> 217</span> s = 4, t = 3;</div>
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<div class="line"><a id="l00218" name="l00218"></a><span class="lineno"> 218</span> std::cout << <span class="stringliteral">"Initiating Test 2..."</span> << std::endl;</div>
|
|
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno"> 219</span> assert(<a class="code hl_function" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a1b2df3d52a403ad46523ab90d3a723c1">graph::bidirectional_dijkstra::Bidijkstra</a>(&adj1_1, &adj1_2, s - 1,</div>
|
|
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno"> 220</span> t - 1) == 5);</div>
|
|
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno"> 221</span> std::cout << <span class="stringliteral">"Test 2 Passed..."</span> << std::endl;</div>
|
|
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno"> 222</span> </div>
|
|
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno"> 223</span> std::vector<std::vector<std::pair<uint64_t, uint64_t>>> adj2_1(</div>
|
|
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno"> 224</span> 5, std::vector<std::pair<uint64_t, uint64_t>>());</div>
|
|
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno"> 225</span> std::vector<std::vector<std::pair<uint64_t, uint64_t>>> adj2_2(</div>
|
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<div class="line"><a id="l00226" name="l00226"></a><span class="lineno"> 226</span> 5, std::vector<std::pair<uint64_t, uint64_t>>());</div>
|
|
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno"> 227</span> <a class="code hl_function" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a69172365aebde9be1997157f6f80e0cf">graph::bidirectional_dijkstra::addEdge</a>(&adj2_1, &adj2_2, 1, 2, 4);</div>
|
|
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno"> 228</span> <a class="code hl_function" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a69172365aebde9be1997157f6f80e0cf">graph::bidirectional_dijkstra::addEdge</a>(&adj2_1, &adj2_2, 1, 3, 2);</div>
|
|
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno"> 229</span> <a class="code hl_function" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a69172365aebde9be1997157f6f80e0cf">graph::bidirectional_dijkstra::addEdge</a>(&adj2_1, &adj2_2, 2, 3, 2);</div>
|
|
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno"> 230</span> <a class="code hl_function" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a69172365aebde9be1997157f6f80e0cf">graph::bidirectional_dijkstra::addEdge</a>(&adj2_1, &adj2_2, 3, 2, 1);</div>
|
|
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno"> 231</span> <a class="code hl_function" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a69172365aebde9be1997157f6f80e0cf">graph::bidirectional_dijkstra::addEdge</a>(&adj2_1, &adj2_2, 2, 4, 2);</div>
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|
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno"> 232</span> <a class="code hl_function" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a69172365aebde9be1997157f6f80e0cf">graph::bidirectional_dijkstra::addEdge</a>(&adj2_1, &adj2_2, 3, 5, 4);</div>
|
|
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno"> 233</span> <a class="code hl_function" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a69172365aebde9be1997157f6f80e0cf">graph::bidirectional_dijkstra::addEdge</a>(&adj2_1, &adj2_2, 5, 4, 1);</div>
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|
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno"> 234</span> <a class="code hl_function" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a69172365aebde9be1997157f6f80e0cf">graph::bidirectional_dijkstra::addEdge</a>(&adj2_1, &adj2_2, 2, 5, 3);</div>
|
|
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno"> 235</span> <a class="code hl_function" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a69172365aebde9be1997157f6f80e0cf">graph::bidirectional_dijkstra::addEdge</a>(&adj2_1, &adj2_2, 3, 4, 4);</div>
|
|
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno"> 236</span> </div>
|
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<div class="line"><a id="l00237" name="l00237"></a><span class="lineno"> 237</span> s = 1, t = 5;</div>
|
|
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno"> 238</span> std::cout << <span class="stringliteral">"Initiating Test 3..."</span> << std::endl;</div>
|
|
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno"> 239</span> assert(<a class="code hl_function" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a1b2df3d52a403ad46523ab90d3a723c1">graph::bidirectional_dijkstra::Bidijkstra</a>(&adj2_1, &adj2_2, s - 1,</div>
|
|
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno"> 240</span> t - 1) == 6);</div>
|
|
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno"> 241</span> std::cout << <span class="stringliteral">"Test 3 Passed..."</span> << std::endl;</div>
|
|
<div class="line"><a id="l00242" name="l00242"></a><span class="lineno"> 242</span> std::cout << <span class="stringliteral">"All Test Passed..."</span> << std::endl << std::endl;</div>
|
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<div class="line"><a id="l00243" name="l00243"></a><span class="lineno"> 243</span>}</div>
|
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</div>
|
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<div class="line"><a id="l00244" name="l00244"></a><span class="lineno"> 244</span></div>
|
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<div class="foldopen" id="foldopen00249" data-start="{" data-end="}">
|
|
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno"><a class="line" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4"> 249</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a>() {</div>
|
|
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno"> 250</span> <a class="code hl_function" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a483bb8ccf42aaf7375a83e91490eda1e">tests</a>(); <span class="comment">// running predefined tests</span></div>
|
|
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno"> 251</span> uint64_t vertices = uint64_t();</div>
|
|
<div class="line"><a id="l00252" name="l00252"></a><span class="lineno"> 252</span> uint64_t edges = uint64_t();</div>
|
|
<div class="line"><a id="l00253" name="l00253"></a><span class="lineno"> 253</span> std::cout << <span class="stringliteral">"Enter the number of vertices : "</span>;</div>
|
|
<div class="line"><a id="l00254" name="l00254"></a><span class="lineno"> 254</span> std::cin >> vertices;</div>
|
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<div class="line"><a id="l00255" name="l00255"></a><span class="lineno"> 255</span> std::cout << <span class="stringliteral">"Enter the number of edges : "</span>;</div>
|
|
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno"> 256</span> std::cin >> edges;</div>
|
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<div class="line"><a id="l00257" name="l00257"></a><span class="lineno"> 257</span> </div>
|
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<div class="line"><a id="l00258" name="l00258"></a><span class="lineno"> 258</span> std::vector<std::vector<std::pair<uint64_t, uint64_t>>> adj1(</div>
|
|
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno"> 259</span> vertices, std::vector<std::pair<uint64_t, uint64_t>>());</div>
|
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<div class="line"><a id="l00260" name="l00260"></a><span class="lineno"> 260</span> std::vector<std::vector<std::pair<uint64_t, uint64_t>>> adj2(</div>
|
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<div class="line"><a id="l00261" name="l00261"></a><span class="lineno"> 261</span> vertices, std::vector<std::pair<uint64_t, uint64_t>>());</div>
|
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<div class="line"><a id="l00262" name="l00262"></a><span class="lineno"> 262</span> </div>
|
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<div class="line"><a id="l00263" name="l00263"></a><span class="lineno"> 263</span> uint64_t u = uint64_t(), v = uint64_t(), w = uint64_t();</div>
|
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<div class="line"><a id="l00264" name="l00264"></a><span class="lineno"> 264</span> std::cout << <span class="stringliteral">"Enter the edges by three integers in this form: u v w "</span></div>
|
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<div class="line"><a id="l00265" name="l00265"></a><span class="lineno"> 265</span> << std::endl;</div>
|
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<div class="line"><a id="l00266" name="l00266"></a><span class="lineno"> 266</span> std::cout << <span class="stringliteral">"Example: if there is and edge between node 1 and node 4 with "</span></div>
|
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<div class="line"><a id="l00267" name="l00267"></a><span class="lineno"> 267</span> <span class="stringliteral">"weight 7 enter: 1 4 7, and then press enter"</span></div>
|
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<div class="line"><a id="l00268" name="l00268"></a><span class="lineno"> 268</span> << std::endl;</div>
|
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<div class="line"><a id="l00269" name="l00269"></a><span class="lineno"> 269</span> <span class="keywordflow">while</span> (edges--) {</div>
|
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<div class="line"><a id="l00270" name="l00270"></a><span class="lineno"> 270</span> std::cin >> u >> v >> w;</div>
|
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<div class="line"><a id="l00271" name="l00271"></a><span class="lineno"> 271</span> <a class="code hl_function" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a69172365aebde9be1997157f6f80e0cf">graph::bidirectional_dijkstra::addEdge</a>(&adj1, &adj2, u, v, w);</div>
|
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<div class="line"><a id="l00272" name="l00272"></a><span class="lineno"> 272</span> <span class="keywordflow">if</span> (edges != 0) {</div>
|
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<div class="line"><a id="l00273" name="l00273"></a><span class="lineno"> 273</span> std::cout << <span class="stringliteral">"Enter the next edge"</span> << std::endl;</div>
|
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<div class="line"><a id="l00274" name="l00274"></a><span class="lineno"> 274</span> }</div>
|
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<div class="line"><a id="l00275" name="l00275"></a><span class="lineno"> 275</span> }</div>
|
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<div class="line"><a id="l00276" name="l00276"></a><span class="lineno"> 276</span> </div>
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<div class="line"><a id="l00277" name="l00277"></a><span class="lineno"> 277</span> uint64_t s = uint64_t(), t = uint64_t();</div>
|
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<div class="line"><a id="l00278" name="l00278"></a><span class="lineno"> 278</span> std::cout</div>
|
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<div class="line"><a id="l00279" name="l00279"></a><span class="lineno"> 279</span> << <span class="stringliteral">"Enter the source node and the target node separated by a space"</span></div>
|
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<div class="line"><a id="l00280" name="l00280"></a><span class="lineno"> 280</span> << std::endl;</div>
|
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<div class="line"><a id="l00281" name="l00281"></a><span class="lineno"> 281</span> std::cout << <span class="stringliteral">"Example: If the source node is 5 and the target node is 6 "</span></div>
|
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<div class="line"><a id="l00282" name="l00282"></a><span class="lineno"> 282</span> <span class="stringliteral">"enter: 5 6 and press enter"</span></div>
|
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<div class="line"><a id="l00283" name="l00283"></a><span class="lineno"> 283</span> << std::endl;</div>
|
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<div class="line"><a id="l00284" name="l00284"></a><span class="lineno"> 284</span> std::cin >> s >> t;</div>
|
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<div class="line"><a id="l00285" name="l00285"></a><span class="lineno"> 285</span> <span class="keywordtype">int</span> dist =</div>
|
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<div class="line"><a id="l00286" name="l00286"></a><span class="lineno"> 286</span> <a class="code hl_function" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a1b2df3d52a403ad46523ab90d3a723c1">graph::bidirectional_dijkstra::Bidijkstra</a>(&adj1, &adj2, s - 1, t - 1);</div>
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<div class="line"><a id="l00287" name="l00287"></a><span class="lineno"> 287</span> <span class="keywordflow">if</span> (dist == -1) {</div>
|
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<div class="line"><a id="l00288" name="l00288"></a><span class="lineno"> 288</span> std::cout << <span class="stringliteral">"Target not reachable from source"</span> << std::endl;</div>
|
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<div class="line"><a id="l00289" name="l00289"></a><span class="lineno"> 289</span> } <span class="keywordflow">else</span> {</div>
|
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<div class="line"><a id="l00290" name="l00290"></a><span class="lineno"> 290</span> std::cout << <span class="stringliteral">"Shortest Path Distance : "</span> << dist << std::endl;</div>
|
|
<div class="line"><a id="l00291" name="l00291"></a><span class="lineno"> 291</span> }</div>
|
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<div class="line"><a id="l00292" name="l00292"></a><span class="lineno"> 292</span> </div>
|
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<div class="line"><a id="l00293" name="l00293"></a><span class="lineno"> 293</span> <span class="keywordflow">return</span> 0;</div>
|
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<div class="line"><a id="l00294" name="l00294"></a><span class="lineno"> 294</span>}</div>
|
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</div>
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<div class="ttc" id="abidirectional__dijkstra_8cpp_html_a1b2df3d52a403ad46523ab90d3a723c1"><div class="ttname"><a href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a1b2df3d52a403ad46523ab90d3a723c1">graph::bidirectional_dijkstra::Bidijkstra</a></div><div class="ttdeci">int Bidijkstra(std::vector< std::vector< std::pair< uint64_t, uint64_t > > > *adj1, std::vector< std::vector< std::pair< uint64_t, uint64_t > > > *adj2, uint64_t s, uint64_t t)</div><div class="ttdoc">Function runs the dijkstra algorithm for some source vertex and target vertex in the graph and return...</div><div class="ttdef"><b>Definition</b> <a href="#l00087">bidirectional_dijkstra.cpp:87</a></div></div>
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<div class="ttc" id="abidirectional__dijkstra_8cpp_html_a22f1b7277e1dd4190f25014b48487ce6"><div class="ttname"><a href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a22f1b7277e1dd4190f25014b48487ce6">graph::bidirectional_dijkstra::Shortest_Path_Distance</a></div><div class="ttdeci">uint64_t Shortest_Path_Distance(const std::vector< uint64_t > &workset_, const std::vector< std::vector< uint64_t > > &distance_)</div><div class="ttdoc">This function returns the shortest distance from the source to the target if there is path between ve...</div><div class="ttdef"><b>Definition</b> <a href="#l00062">bidirectional_dijkstra.cpp:62</a></div></div>
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<div class="ttc" id="abidirectional__dijkstra_8cpp_html_a330a2b0a904f01802ada1f8f3b28e76c"><div class="ttname"><a href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a330a2b0a904f01802ada1f8f3b28e76c">INF</a></div><div class="ttdeci">constexpr int64_t INF</div><div class="ttdoc">for assert</div><div class="ttdef"><b>Definition</b> <a href="#l00024">bidirectional_dijkstra.cpp:24</a></div></div>
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<div class="ttc" id="abidirectional__dijkstra_8cpp_html_a483bb8ccf42aaf7375a83e91490eda1e"><div class="ttname"><a href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a483bb8ccf42aaf7375a83e91490eda1e">tests</a></div><div class="ttdeci">static void tests()</div><div class="ttdoc">Function to test the provided algorithm above.</div><div class="ttdef"><b>Definition</b> <a href="#l00200">bidirectional_dijkstra.cpp:200</a></div></div>
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<div class="ttc" id="abidirectional__dijkstra_8cpp_html_a69172365aebde9be1997157f6f80e0cf"><div class="ttname"><a href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a69172365aebde9be1997157f6f80e0cf">graph::bidirectional_dijkstra::addEdge</a></div><div class="ttdeci">void addEdge(std::vector< std::vector< std::pair< uint64_t, uint64_t > > > *adj1, std::vector< std::vector< std::pair< uint64_t, uint64_t > > > *adj2, uint64_t u, uint64_t v, uint64_t w)</div><div class="ttdoc">Function that add edge between two nodes or vertices of graph.</div><div class="ttdef"><b>Definition</b> <a href="#l00046">bidirectional_dijkstra.cpp:46</a></div></div>
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<div class="ttc" id="abidirectional__dijkstra_8cpp_html_ae66f6b31b5ad750f1fe042a706a4e3d4"><div class="ttname"><a href="../../d7/d07/bidirectional__dijkstra_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a></div><div class="ttdeci">int main()</div><div class="ttdoc">Main function.</div><div class="ttdef"><b>Definition</b> <a href="#l00249">bidirectional_dijkstra.cpp:249</a></div></div>
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<div class="ttc" id="anamespacebidirectional__dijkstra_html"><div class="ttname"><a href="../../d4/d13/namespacebidirectional__dijkstra.html">bidirectional_dijkstra</a></div><div class="ttdoc">Functions for [Bidirectional Dijkstra Shortest Path] (https://www.coursera.org/learn/algorithms-on-gr...</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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