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更改了原arr,不知道算不算缺点

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王闪_Frank

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

//排序 arr.sort(); //将前面的同学和最后一位同学分开来 var last_student = arr.pop();

alert("欢迎"+ arr.join(',') + "和" + last_student + "同学!");

weaming

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

不错


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