public void findNodes(int srcNodeItem, int tgtNodeItem) {
		src = tgt = null;
		
		for(Vertex v : vertices) {
			if(src != null && tgt != null)
				break;
			else if(v.nodeItem == srcNodeItem)
				src = v;
			else if(v.nodeItem == tgtNodeItem)
				tgt = v;
		}
	}