// Java

/******************************************
use variable graph to access Graph methods 
(e.g. graph.getVertexCount())

Goto http://www.inf.ethz.ch/~braendle/graphbench 
for Java API
******************************************/

import ch.ethz.graphbench.toolbox.*;

// import Color class
import java.awt.Color;

public class ColorVertices extends GraphAlgorithm{
  // Array with all the Colors to be used
  Color[] colors = new Color[] {Color.red, Color.yellow, Color.green, Color.blue, Color.cyan, Color.magenta, Color.orange};

  public void executeAlgorithm(){
    Vertex vertex;
    // go trhough all vertices
    for(int i=0; i < graph.getVertexCount(); i++){
      // get the next Vertex
      vertex = graph.getVertex(i);
      // get the next Color
      Color color = colors[i % colors.length];
      // set Color
      vertex.setColor(color);
    }
  }
}