只有我这么写吗，为什么要循环呀。。

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

var firToLst,LstToFir,

list = document.getElementById('test-list');

firToLst = list.children[0];

LstToFir = list.children[list.children.length - 1];

list.insertBefore(LstToFir,firToLst);

list.appendChild(firToLst);

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

我看题目发现就是首位互换而已呀、、、你们为什么要循环。。。

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

毕竟你这个方法纯粹是投机取巧，其他人循环是通解，你这个呢？

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

这像是知道了答案倒写过程

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

这思路不错，通不通解不重要，解决问题才是最主要的，这可能就是人和ai的区别的了吧