org.jgrapht.UndirectedGraph Maven / Gradle / Ivy
/*
* (C) Copyright 2003-2017, by Barak Naveh and Contributors.
*
* JGraphT : a free Java graph-theory library
*
* This program and the accompanying materials are dual-licensed under
* either
*
* (a) the terms of the GNU Lesser General Public License version 2.1
* as published by the Free Software Foundation, or (at your option) any
* later version.
*
* or (per the licensee's choosing)
*
* (b) the terms of the Eclipse Public License v1.0 as published by
* the Eclipse Foundation.
*/
package org.jgrapht;
/**
* A graph whose all edges are undirected. This is the root interface of all undirected graphs.
*
*
* See
* http://mathworld.wolfram.com/Graph.html for more on undirected and on directed graphs.
*
*
* @param the graph vertex type
* @param the graph edge type
*
* @author Barak Naveh
* @since Jul 14, 2003
*/
public interface UndirectedGraph
extends Graph
{
/**
* Returns the degree of the specified vertex. A degree of a vertex in an undirected graph is
* the number of edges touching that vertex.
*
* @param vertex vertex whose degree is to be calculated.
*
* @return the degree of the specified vertex.
*/
int degreeOf(V vertex);
}
// End UndirectedGraph.java