| public static hexagonalNumber ( integer $n ) : array | ||
| $n | integer | How many numbers in the sequence |
| Результат | array | Indexed from 1 |
public static function hexagonalNumber(int $n) : array
{
$hexagonal = [];
// Bad input; return empty list
if ($n <= 0) {
return $hexagonal;
}
// Standard case for hn: (2n × (2n - 1)) / 2
for ($i = 1; $i <= $n; $i++) {
$hexagonal[$i] = 2 * $i * (2 * $i - 1) / 2;
}
return $hexagonal;
}