Spiral.php

<?php

declare(strict_types=1);

namespace Exercises\Spiral;

/**
 * Create a spiral matrix of length * length.
 *
 * @method static array make(int $length)
 * @example Spiral::make(3) === [
 *     [1, 2, 3],
 *     [8, 9, 4],
 *     [7, 6, 5]]
 */
final class Spiral
{
}