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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.
I find the description to be nasty. It reads as if the first part of that condition is a given and we should only check that second part.
you forgot to check one part of your conditional statement, not a kata issue
No, it's not. It's been solved more than 25k times already. If you don't understand something just ask a question, or read the posts below.
Please post your current solution here and mark it as a spoiler so we can see where the problem is, thanks :-)
Can you say more? What part did you find ambiguous?
Not an issue. Your code is inefficient.
Maybe I was a bit too enthusiastic when started all these katas.