/**
* The interval of all possible children paths for a node
*
* @param Node $node
* @param string $path
* @return array Index 0: start - Index 1: end
*/
public static function getChildrenPathInterval(NodeInfo $node, $path)
{
return array($path . str_repeat(substr($node->getAlphabet(), 0, 1), $node->getStepLength()), $path . str_repeat(substr($node->getAlphabet(), -1), $node->getStepLength()));
}
