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Witee-Xie

#1 Created at ... [Delete] [Delete and Lock User]

alert("欢迎"+arr.sort().slice(0,3)+"和"+ arr.sort().slice(3) +"同学!")

廖雪峰

#2 Created at ... [Delete] [Delete and Lock User]

你sort了两次

Witee-Xie

#3 Created at ... [Delete] [Delete and Lock User]

嗯，发现了。

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