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作业

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一库嘟

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

第一题：

var x = arr[1][1];

第二题：

var a = arr.sort();

console.log('欢迎'+a[0]+'，'+a[1]+'，'+a[2]+'和'+a[3]+'同学！');

希~

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

没排序

蓉

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

var a = arr.sort();

console.log("欢迎"+ a[1] +";"+ a[2]+ ";" +a[0] +";"+ a[3] + "同学");

排好序

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