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<div class="subTitle">org.jgrapht.generate</div>
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<h2 title="Class RandomGraphGenerator.DefaultEdgeTopologyFactory" class="title">Class RandomGraphGenerator.DefaultEdgeTopologyFactory<VV,EE></h2>
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<li>org.jgrapht.generate.RandomGraphGenerator.DefaultEdgeTopologyFactory<VV,EE></li>
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<dd><a href="../../../org/jgrapht/generate/RandomGraphGenerator.EdgeTopologyFactory.html" title="interface in org.jgrapht.generate">RandomGraphGenerator.EdgeTopologyFactory</a><VV,EE></dd>
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<dt>Enclosing class:</dt>
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<dd><a href="../../../org/jgrapht/generate/RandomGraphGenerator.html" title="class in org.jgrapht.generate">RandomGraphGenerator</a><<a href="../../../org/jgrapht/generate/RandomGraphGenerator.html" title="type parameter in RandomGraphGenerator">V</a>,<a href="../../../org/jgrapht/generate/RandomGraphGenerator.html" title="type parameter in RandomGraphGenerator">E</a>></dd>
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<pre>public class <span class="strong">RandomGraphGenerator.DefaultEdgeTopologyFactory<VV,EE></span>
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extends <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>
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implements <a href="../../../org/jgrapht/generate/RandomGraphGenerator.EdgeTopologyFactory.html" title="interface in org.jgrapht.generate">RandomGraphGenerator.EdgeTopologyFactory</a><VV,EE></pre>
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<div class="block">Default implementation of the EdgeTopologyFactory interface. randomly
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chooses an edge and tries to add it. If the add fails from any reason
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(like: self edge / multiple edges in unpermitted graph type) it will just
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choose another and try again. Performance:
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<ol>
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<li>when the number of possible edges becomes slim , this class will have
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a very poor performance , cause it will not use gready methods to choose
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them. for example : In simple graph , if #V = N (#x = number Of x) and we
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want full mesh #edges= N*(N-1)/2 , the first added edges will do so
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quickly (O(1) , the last will take O(N^2). So , do not use it in this
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kind of graphs.</li>
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<li>If the numberOfEdges is bigger than what the graph can add, there
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will be an infinite loop here. It is not tested.</li>
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</ol></div>
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<dl><dt><span class="strong">Since:</span></dt>
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<dd>Aug 6, 2005</dd>
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<dt><span class="strong">Author:</span></dt>
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<dd>Assaf</dd></dl>
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</li>
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<td class="colOne"><code><strong><a href="../../../org/jgrapht/generate/RandomGraphGenerator.DefaultEdgeTopologyFactory.html#RandomGraphGenerator.DefaultEdgeTopologyFactory()">RandomGraphGenerator.DefaultEdgeTopologyFactory</a></strong>()</code> </td>
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<td class="colFirst"><code>void</code></td>
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<td class="colLast"><code><strong><a href="../../../org/jgrapht/generate/RandomGraphGenerator.DefaultEdgeTopologyFactory.html#createEdges(org.jgrapht.Graph,%20java.util.Map,%20int,%20java.util.Random)">createEdges</a></strong>(<a href="../../../org/jgrapht/Graph.html" title="interface in org.jgrapht">Graph</a><<a href="../../../org/jgrapht/generate/RandomGraphGenerator.DefaultEdgeTopologyFactory.html" title="type parameter in RandomGraphGenerator.DefaultEdgeTopologyFactory">VV</a>,<a href="../../../org/jgrapht/generate/RandomGraphGenerator.DefaultEdgeTopologyFactory.html" title="type parameter in RandomGraphGenerator.DefaultEdgeTopologyFactory">EE</a>> targetGraph,
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<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>,<a href="../../../org/jgrapht/generate/RandomGraphGenerator.DefaultEdgeTopologyFactory.html" title="type parameter in RandomGraphGenerator.DefaultEdgeTopologyFactory">VV</a>> orderToVertexMap,
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int numberOfEdges,
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<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Random.html?is-external=true" title="class or interface in java.util">Random</a> randomizer)</code>
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<div class="block">Two different calls to the createEdges() with the same parameters
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must result in the generation of the same.</div>
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<td class="colFirst"><code>int</code></td>
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<td class="colLast"><code><strong><a href="../../../org/jgrapht/generate/RandomGraphGenerator.DefaultEdgeTopologyFactory.html#getMaxEdgesForVertexNum(org.jgrapht.Graph)">getMaxEdgesForVertexNum</a></strong>(<a href="../../../org/jgrapht/Graph.html" title="interface in org.jgrapht">Graph</a><<a href="../../../org/jgrapht/generate/RandomGraphGenerator.DefaultEdgeTopologyFactory.html" title="type parameter in RandomGraphGenerator.DefaultEdgeTopologyFactory">VV</a>,<a href="../../../org/jgrapht/generate/RandomGraphGenerator.DefaultEdgeTopologyFactory.html" title="type parameter in RandomGraphGenerator.DefaultEdgeTopologyFactory">EE</a>> targetGraph)</code>
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<div class="block">Return max edges for that graph.</div>
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<td class="colFirst"><code>boolean</code></td>
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<td class="colLast"><code><strong><a href="../../../org/jgrapht/generate/RandomGraphGenerator.DefaultEdgeTopologyFactory.html#isNumberOfEdgesValid(org.jgrapht.Graph,%20int)">isNumberOfEdgesValid</a></strong>(<a href="../../../org/jgrapht/Graph.html" title="interface in org.jgrapht">Graph</a><<a href="../../../org/jgrapht/generate/RandomGraphGenerator.DefaultEdgeTopologyFactory.html" title="type parameter in RandomGraphGenerator.DefaultEdgeTopologyFactory">VV</a>,<a href="../../../org/jgrapht/generate/RandomGraphGenerator.DefaultEdgeTopologyFactory.html" title="type parameter in RandomGraphGenerator.DefaultEdgeTopologyFactory">EE</a>> targetGraph,
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int numberOfEdges)</code>
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<div class="block">checks if the numOfEdges is smaller than the Max edges according to
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the following table:</div>
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<h3>Constructor Detail</h3>
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<a name="RandomGraphGenerator.DefaultEdgeTopologyFactory()">
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<h4>RandomGraphGenerator.DefaultEdgeTopologyFactory</h4>
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<pre>public RandomGraphGenerator.DefaultEdgeTopologyFactory()</pre>
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<h3>Method Detail</h3>
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<a name="createEdges(org.jgrapht.Graph, java.util.Map, int, java.util.Random)">
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<h4>createEdges</h4>
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<pre>public void createEdges(<a href="../../../org/jgrapht/Graph.html" title="interface in org.jgrapht">Graph</a><<a href="../../../org/jgrapht/generate/RandomGraphGenerator.DefaultEdgeTopologyFactory.html" title="type parameter in RandomGraphGenerator.DefaultEdgeTopologyFactory">VV</a>,<a href="../../../org/jgrapht/generate/RandomGraphGenerator.DefaultEdgeTopologyFactory.html" title="type parameter in RandomGraphGenerator.DefaultEdgeTopologyFactory">EE</a>> targetGraph,
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<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>,<a href="../../../org/jgrapht/generate/RandomGraphGenerator.DefaultEdgeTopologyFactory.html" title="type parameter in RandomGraphGenerator.DefaultEdgeTopologyFactory">VV</a>> orderToVertexMap,
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int numberOfEdges,
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<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Random.html?is-external=true" title="class or interface in java.util">Random</a> randomizer)</pre>
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<div class="block"><strong>Description copied from interface: <code><a href="../../../org/jgrapht/generate/RandomGraphGenerator.EdgeTopologyFactory.html#createEdges(org.jgrapht.Graph,%20java.util.Map,%20int,%20java.util.Random)">RandomGraphGenerator.EdgeTopologyFactory</a></code></strong></div>
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<div class="block">Two different calls to the createEdges() with the same parameters
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must result in the generation of the same. But if the randomizer is
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different, it should, usually, create different edge topology.</div>
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<dl>
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<dt><strong>Specified by:</strong></dt>
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<dd><code><a href="../../../org/jgrapht/generate/RandomGraphGenerator.EdgeTopologyFactory.html#createEdges(org.jgrapht.Graph,%20java.util.Map,%20int,%20java.util.Random)">createEdges</a></code> in interface <code><a href="../../../org/jgrapht/generate/RandomGraphGenerator.EdgeTopologyFactory.html" title="interface in org.jgrapht.generate">RandomGraphGenerator.EdgeTopologyFactory</a><<a href="../../../org/jgrapht/generate/RandomGraphGenerator.DefaultEdgeTopologyFactory.html" title="type parameter in RandomGraphGenerator.DefaultEdgeTopologyFactory">VV</a>,<a href="../../../org/jgrapht/generate/RandomGraphGenerator.DefaultEdgeTopologyFactory.html" title="type parameter in RandomGraphGenerator.DefaultEdgeTopologyFactory">EE</a>></code></dd>
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<dt><span class="strong">Parameters:</span></dt><dd><code>targetGraph</code> - - guranteed to start with zero edges.</dd><dd><code>orderToVertexMap</code> - - key=Integer of vertex order . between zero
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to numOfVertexes (exclusive). value = vertex from the graph. unique.</dd><dd><code>numberOfEdges</code> - - to create in the graph</dd></dl>
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</li>
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</ul>
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<a name="isNumberOfEdgesValid(org.jgrapht.Graph, int)">
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<!-- -->
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</a>
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<ul class="blockList">
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<li class="blockList">
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<h4>isNumberOfEdgesValid</h4>
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<pre>public boolean isNumberOfEdgesValid(<a href="../../../org/jgrapht/Graph.html" title="interface in org.jgrapht">Graph</a><<a href="../../../org/jgrapht/generate/RandomGraphGenerator.DefaultEdgeTopologyFactory.html" title="type parameter in RandomGraphGenerator.DefaultEdgeTopologyFactory">VV</a>,<a href="../../../org/jgrapht/generate/RandomGraphGenerator.DefaultEdgeTopologyFactory.html" title="type parameter in RandomGraphGenerator.DefaultEdgeTopologyFactory">EE</a>> targetGraph,
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int numberOfEdges)</pre>
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<div class="block">checks if the numOfEdges is smaller than the Max edges according to
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the following table:
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<p>
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<table border=1 cellpadding=5>
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<caption></caption>
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<tr align="center">
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<th>Graph Type</th>
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<th><i>Directed / UnDirected</i></th>
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<th><i>multiple edges</i></th>
|
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<th><i>loops</i></th>
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<th><i>Max Edges</i></th>
|
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</tr>
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<tr align="center">
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<td>SimpleGraph</td>
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<td>UnDirected</td>
|
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<td>-</td>
|
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<td>-</td>
|
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<td>N(N-1)/2</td>
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</tr>
|
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<tr align="center">
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<td>Multigraph</td>
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<td>UnDirected</td>
|
||
|
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<td>+</td>
|
||
|
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<td>-</td>
|
||
|
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<td>Infinite</td>
|
||
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</tr>
|
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<tr align="center">
|
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<td>Pseudograph</td>
|
||
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<td>UnDirected</td>
|
||
|
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<td>+</td>
|
||
|
|
<td>+</td>
|
||
|
|
<td>Infinite</td>
|
||
|
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</tr>
|
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<tr align="center">
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<td>SimpleDirectedGraph</td>
|
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<td>Directed</td>
|
||
|
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<td>-</td>
|
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|
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<td>-</td>
|
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|
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<td>N (N-1)</td>
|
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</tr>
|
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<tr align="center">
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<td>DefaultDirectedGraph</td>
|
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|
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<td>Directed</td>
|
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|
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<td>-</td>
|
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|
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<td>+</td>
|
||
|
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<td>N*(N-1)+ N = N^2</td>
|
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</tr>
|
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<tr align="center">
|
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<td>DirectedMultigraph</td>
|
||
|
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<td>Directed</td>
|
||
|
|
<td>+</td>
|
||
|
|
<td>+</td>
|
||
|
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<td>Infinite</td>
|
||
|
|
</tr>
|
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|
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</table></div>
|
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<dl>
|
||
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<dt><strong>Specified by:</strong></dt>
|
||
|
|
<dd><code><a href="../../../org/jgrapht/generate/RandomGraphGenerator.EdgeTopologyFactory.html#isNumberOfEdgesValid(org.jgrapht.Graph,%20int)">isNumberOfEdgesValid</a></code> in interface <code><a href="../../../org/jgrapht/generate/RandomGraphGenerator.EdgeTopologyFactory.html" title="interface in org.jgrapht.generate">RandomGraphGenerator.EdgeTopologyFactory</a><<a href="../../../org/jgrapht/generate/RandomGraphGenerator.DefaultEdgeTopologyFactory.html" title="type parameter in RandomGraphGenerator.DefaultEdgeTopologyFactory">VV</a>,<a href="../../../org/jgrapht/generate/RandomGraphGenerator.DefaultEdgeTopologyFactory.html" title="type parameter in RandomGraphGenerator.DefaultEdgeTopologyFactory">EE</a>></code></dd>
|
||
|
|
<dt><span class="strong">Parameters:</span></dt><dd><code>targetGraph</code> - guranteed to start with zero edges.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/jgrapht/generate/RandomGraphGenerator.EdgeTopologyFactory.html#isNumberOfEdgesValid(org.jgrapht.Graph,%20int)"><code>RandomGraphGenerator.EdgeTopologyFactory.isNumberOfEdgesValid(Graph,
|
||
|
|
int)</code></a></dd></dl>
|
||
|
|
</li>
|
||
|
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</ul>
|
||
|
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<a name="getMaxEdgesForVertexNum(org.jgrapht.Graph)">
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<!-- -->
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</a>
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<ul class="blockListLast">
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<li class="blockList">
|
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<h4>getMaxEdgesForVertexNum</h4>
|
||
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<pre>public int getMaxEdgesForVertexNum(<a href="../../../org/jgrapht/Graph.html" title="interface in org.jgrapht">Graph</a><<a href="../../../org/jgrapht/generate/RandomGraphGenerator.DefaultEdgeTopologyFactory.html" title="type parameter in RandomGraphGenerator.DefaultEdgeTopologyFactory">VV</a>,<a href="../../../org/jgrapht/generate/RandomGraphGenerator.DefaultEdgeTopologyFactory.html" title="type parameter in RandomGraphGenerator.DefaultEdgeTopologyFactory">EE</a>> targetGraph)</pre>
|
||
|
|
<div class="block">Return max edges for that graph. If it is infinite return -1 instead.</div>
|
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|
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</li>
|
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|
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</ul>
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