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0.0 這樣

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傻傻傻201207

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

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 x = arr[1][1];

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alert('欢迎' + arr.sort() + '同学！');

傻傻傻201207

#2 Created at ... [Delete] [Delete and Lock User] 
alert('欢迎' + arr.sort().slice(0,3) + '和' +arr.sort().slice(3) + '同学！');
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