appendChain method

VertexList appendChain(Vertex? vertex)

Implementation

VertexList appendChain(Vertex? vertex ) {
	if ( head == null ) {
		head = vertex;
	}
    else {
		tail?.next = vertex;
	}

	vertex?.prev = tail;

	while ( vertex?.next != null ) {
		vertex = vertex?.next;
	}

	tail = vertex;

	return this;
}