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realstealthninja
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<title>TheAlgorithms/C++: graph/dijkstra.cpp Source File</title>
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@@ -60,7 +60,7 @@ window.MathJax = {
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@@ -124,7 +124,7 @@ $(function(){initNavTree('d8/d68/dijkstra_8cpp_source.html','../../'); initResiz
<div class="headertitle"><div class="title">dijkstra.cpp</div></div>
</div><!--header-->
<div class="contents">
<a href="../../d8/d68/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>
<a href="../../d8/d68/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>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="preprocessor">#include &lt;cassert&gt;</span></div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="preprocessor">#include &lt;iostream&gt;</span></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="preprocessor">#include &lt;limits&gt;</span></div>
@@ -134,7 +134,8 @@ $(function(){initNavTree('d8/d68/dijkstra_8cpp_source.html','../../'); initResiz
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span><span class="preprocessor">#include &lt;vector&gt;</span></div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> </div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</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&lt;int64_t&gt;::max();</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> </div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> </div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span><span class="keyword">namespace </span><a class="code hl_namespace" href="../../df/dce/namespacegraph.html">graph</a> {</div>
<div class="foldopen" id="foldopen00048" data-start="{" data-end="}">
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"><a class="line" href="../../df/dce/namespacegraph.html#a0e30e0dca68cb6e4f671440819b35b6a"> 48</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="../../df/dce/namespacegraph.html#a9125ceb66bfbec3093bba64c2c1e99e2">addEdge</a>(std::vector&lt;std::vector&lt;std::pair&lt;int, int&gt;&gt;&gt; *adj, <span class="keywordtype">int</span> u, <span class="keywordtype">int</span> v,</div>
@@ -143,28 +144,28 @@ $(function(){initNavTree('d8/d68/dijkstra_8cpp_source.html','../../'); initResiz
<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>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span>}</div>
</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> </div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span></div>
<div class="foldopen" id="foldopen00066" data-start="{" data-end="}">
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"><a class="line" href="../../df/dce/namespacegraph.html#adc68cbc8ba09eb1142265935c0d45b84"> 66</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="../../df/dce/namespacegraph.html#adc68cbc8ba09eb1142265935c0d45b84">dijkstra</a>(std::vector&lt;std::vector&lt;std::pair&lt;int, int&gt;&gt;&gt; *adj, <span class="keywordtype">int</span> s, <span class="keywordtype">int</span> t) {</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> <span class="keywordtype">int</span> n = adj-&gt;size();</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> </div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span></div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> std::vector&lt;int64_t&gt; dist(n, <a class="code hl_variable" href="../../d7/d07/bidirectional__dijkstra_8cpp.html#a330a2b0a904f01802ada1f8f3b28e76c">INF</a>);</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> </div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span></div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> std::priority_queue&lt;std::pair&lt;int, int&gt;, std::vector&lt;std::pair&lt;int, int&gt;&gt;,</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> std::greater&lt;std::pair&lt;int, int&gt;&gt;&gt;</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> pq;</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> </div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span></div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> pq.push(std::make_pair(0, s));</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> </div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span></div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> dist[s] = 0;</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> </div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <span class="keywordflow">while</span> (!pq.empty()) {</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> <span class="keywordtype">int</span> currentNode = pq.top().second;</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> </div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span></div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <span class="keywordtype">int</span> currentDist = pq.top().first;</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> </div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> pq.pop();</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> </div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span></div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> <span class="keywordflow">for</span> (std::pair&lt;int, int&gt; edge : (*adj)[currentNode]) {</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> <span class="keywordflow">if</span> (currentDist + edge.second &lt; dist[edge.first]) {</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> dist[edge.first] = currentDist + edge.second;</div>
@@ -179,7 +180,7 @@ $(function(){initNavTree('d8/d68/dijkstra_8cpp_source.html','../../'); initResiz
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span>}</div>
</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span>} <span class="comment">// namespace graph</span></div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> </div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span></div>
<div class="foldopen" id="foldopen00113" data-start="{" data-end="}">
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"><a class="line" href="../../d8/d68/dijkstra_8cpp.html#a88ec9ad42717780d6caaff9d3d6977f9"> 113</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="../../d8/d68/dijkstra_8cpp.html#a88ec9ad42717780d6caaff9d3d6977f9">tests</a>() {</div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> std::cout &lt;&lt; <span class="stringliteral">&quot;Initiatinig Predefined Tests...&quot;</span> &lt;&lt; std::endl;</div>
@@ -219,7 +220,7 @@ $(function(){initNavTree('d8/d68/dijkstra_8cpp_source.html','../../'); initResiz
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> std::cout &lt;&lt; <span class="stringliteral">&quot;All Test Passed...&quot;</span> &lt;&lt; std::endl &lt;&lt; std::endl;</div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span>}</div>
</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> </div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span></div>
<div class="foldopen" id="foldopen00152" data-start="{" data-end="}">
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"><a class="line" href="../../d8/d68/dijkstra_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4"> 152</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="../../d8/d68/dijkstra_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a>() {</div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> <span class="comment">// running predefined tests</span></div>
@@ -263,7 +264,7 @@ $(function(){initNavTree('d8/d68/dijkstra_8cpp_source.html','../../'); initResiz
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