protected function init()
{
$this->size = rand(6, 10);
$this->graphTemplate = GraphTemplate::getGraph(array("numVertex" => $this->size, "directed" => true, "connected" => true));
$this->adjList = generateAdjList($this->graphTemplate);
//array of array of Pairs
}
protected function getAnswerNeighbours($qObj)
{
$graphTemplate = $qObj->internalDS;
$v = $qObj->qParams["value"];
$adjList = generateAdjList($graphTemplate);
$ans = array();
$thisrow = $adjList[$v];
for ($i = 0; $i < count($thisrow); $i++) {
$ans[] = $thisrow[$i]->v();
}
return $ans;
}