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On input of two elements, is less than 2?
输入是2个元素，小于2吗？
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So given some input of N elements, first, if N is less than 2, I return immediately.
给出N个元素的一些输入，首先，如果N小于,就立即返回。
应用推荐
$firstVoiceSent
- 来自原声例句