/*
	File: GraphAlgorithm.java
	5/22/96    Larry Barowski
*/



package EDU.auburn.VGJ.algorithm;



import EDU.auburn.VGJ.graph.Graph;



/**
 *	This interface is used to add algorithms to the graph tool.
 *      All that is required is that the algorithm object class
 *	has the function compute, and that it implements GraphAlgorithm.
 * 	</p>Here is the <a href="../algorithm/GraphAlgorithm.java">source</a>.
 *
 *@author	Larry Barowski
**/
public interface GraphAlgorithm
{



/**
 *  Apply the algorithm to graph. The return value should be null
 *  if successful, and an error message if unsuccessful.
 *@param update an object that allows the display to be updated
 *  from within the algorithm
 *@see GraphUpdate
**/
abstract public String compute(Graph graph, GraphUpdate update);

}