zhè / gè / suàn / fǎ / cǎi / yòng / fēi / dì / tuī / de / fāng / fǎ / yīn / cǐ / bù / xū / yào / fǎn / fù / diào / yòng / zì / shēn这个算法采用非递推的方法,因此不需要反复调用自身。This algorithm uses a nonrecursive method, so it does not need to call itself repeatedly.