Method getExternalNodes

src/figtree/treeviewer/ReRootedTree.java:283–285

@return a set of all nodes that have degree 1. These nodes are often refered to as 'tips'.

()

     *         These nodes are often refered to as 'tips'.
     */
    public Set<Node> getExternalNodes() {
        return new LinkedHashSet<Node>(externalNodes.values());
    }

    /**
     * @return a set of all nodes that have degree 2 or more.