| private candidates ( array $samples ) : array | ||
| $samples | array | |
| return | array | |
private function candidates(array $samples) : array
{
$candidates = [];
foreach ($samples as $p) {
foreach ($samples as $q) {
if (count(array_merge(array_diff($p, $q), array_diff($q, $p))) != 2) {
continue;
}
$candidate = array_unique(array_merge($p, $q));
if ($this->contains($candidates, $candidate)) {
continue;
}
foreach ((array) $this->samples as $sample) {
if ($this->subset($sample, $candidate)) {
$candidates[] = $candidate;
continue 2;
}
}
}
}
return $candidates;
}