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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.
Not really that bad, Golang has amortized cost of append() -> O(1)
But sure, make the array beforehand is much better in that case
the algorithm of your isPrime seem good
but goes too deep I guess.
Hint: You don't need to check from 2 to n
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Got the same, While i get everything correctly in xcode
Don't get it