treenodecomparetoy.java

生物物种进化历程的演示

package AccordionTreeDrawer;
import java.util.*;

public class TreeNodeCompareToY extends Object implements Comparator {

    /** implement Comparable interface - sort on key field */
    public int compare(Object o1, Object o2) { 
	TreeNode a, b;
	if (o1 instanceof TreeNode) {
	    a = (TreeNode) o1;
	    b = (TreeNode) o2;
	} else if (o1 instanceof TreeEdge) {
	    a = ((TreeEdge)o1).node;
	    b = ((TreeEdge)o2).node;
	} else {
	    return 0;
	} 
	if (a.getCell().getMin(1) == (b.getCell().getMin(1))) return 0;
	else if (a.getCell().getMin(1) < (b.getCell().getMin(1))) return -1;
	else return 1;
    }
	
}