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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
nice code！！！
很棒的解决方案，我从此解决方案中学到了新东西，谢谢！
smart guy!
我通过了五个测试，array lengths differed, expected.length=3 actual.length=2 我想问一下这个是怎么回事？
你好，我第一次接触到这种类型的递归方式，可以请你大致的帮我理解一下这段代码是怎么工作的吗？或者告诉我该去哪学习有关此知识，不胜感激！
你好，可以跟我解释一下递归是怎么运作的吗？
请问一下测试用例12933的问题怎么解决，我搞不定！
expect12933，but was-1；
可以解读一下代码吗我感觉你的方案很棒！