�，不能用循环。他说答案是使用递归，我觉得他一定是收到了您这篇文章的启发。</p>
<p><a href="https://www.zhihu.com/question/60165921/answer/282467697" rel="nofollow ugc">https://www.zhihu.com/question/60165921/answer/282467697</a></p>
<p>23333</p>
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