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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.
it took 20 seconds for me.
true, it will take most decent programmers barely 2 minutes.
This doesn't deserves to be 5 kata question.
This comment is hidden because it contains spoiler information about the solution
Which language? Sure you don't time out?
Your english is not that half bad, but (kata hint != kata suggestion) as kata suggestions are more focused on hw to further improve the kata specs, requirement & testing etc.
你的英文不赖吧但 （题目提示 ！= 题目建议）毕竟建议是着重于提升题目本身以及各类测试的素质。
There is no failed case showing, still the code is showing error, how is that possible?