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第二题注意标点符号,逗号要全角!!不要偷懒用splice()

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

arr.sort();

console.log(`欢迎${arr.shift()},${arr.shift()},${arr.shift()}和${arr.pop()}同学!`);

保持热爱

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

你这写法,数组长度更改一下,还能用吗?不灵活啊


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