/**
* Constructs the adjacency matrix for the MST.
*
* @param array $edges vertices and edge weights of MST
*/
function constructMST($edges)
{
foreach ($edges as $edge) {
$this->cluster_heap->insert($edge);
$vertex1 = $edge->getStartVertex();
$vertex2 = $edge->getEndVertex();
$this->adjMatrix[$vertex1->getLabel()][$vertex2->getLabel()] = $vertex2->getLabel();
$this->adjMatrix[$vertex2->getLabel()][$vertex1->getLabel()] = $vertex1->getLabel();
if (empty($this->vertices) || !in_array($vertex1, $this->vertices)) {
$this->vertices[$vertex1->getLabel()] = $vertex1;
}
if (empty($this->vertices) || !in_array($vertex2, $this->vertices)) {
$this->vertices[$vertex2->getLabel()] = $vertex2;
}
}
}