private function computeGroup()
    {
        $this->group = [];

        foreach (\range(1, $this->getSize()) as $number) {
            if (1 === $this->gcd($number, $this->getSize())) {
                $this->group[] = $number;
            }
        }
    }
private function computeGroup()
    {
        $this->group = [];

        foreach (\range(1, $this->getSize()) as $number) {
            if (1 === $this->gcd($number, $this->getSize())) {
                $this->group[] = $number;
            }
        }
    }
private function computeGroup ( ) { $ this -> group = [ ] ; foreach ( \ range ( 1 , $ this -> getSize ( ) ) as $ number ) { if ( 1 === $ this -> gcd ( $ number , $ this -> getSize ( ) ) ) { $ this -> group [ ] = $ number ; } } }
Clean out the group from unwanted values.
Clean out the group from unwanted values .