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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.
If input params n>12, it will cause problems.
Can anyone explain why this solution works? Thanks!
Can anyone tell me why ===f====o===x===y===== need return "??" not "fox" ?
When I see this soulution, I think it is concise and fast.
But when I check execute time, it consumes more time than I think, can anyone told me which parts make this one too slow?
p.s. I compare it with my solution, my solution fast 35 times than it, but I don't know why.
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