Remove All Before
并非所有元素都重要。您需要做的是从序列中删除给定元素之前的所有元素。
在示例中，我们有一个序列 [1, 2, 3, 4, 5]，我们需要删除3 之前的所有元素，即1 和2 。
这里有两种边缘情况(1)如果找不到切分元素，那么序列不应该改变。(2)如果序列为空，则应保持为空。
CheckiO Extensions allow you to use local files to solve missions. More info in a blog post.
In order to install CheckiO client you'll need installed Python (version at least 3.8)
Install CheckiO Client first:
pip3 install checkio_client
Configure your tool
checkio --domain=py config --key=
Sync solutions into your local folder
checkio sync
(in beta testing) Launch local server so your browser can use it and sync solution between local file end extension on the fly. (doesn't work for safari)
checkio serv -d
Alternatevly, you can install Chrome extension or FF addon
checkio install-plugin
checkio install-plugin --ff
checkio install-plugin --chromium
Read more here about other functionality that the checkio client provides. Feel free to submit an issue in case of any difficulties.
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