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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.
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You can solve it in any way, and description does not need to provide a hint for solvers unless the task is some sort of puzzle or having complex algorithms
I would say "try to call libraries to do the work for you" as this is only an 8kyu level puzzle, and on top of that "reinventing the wheel is bad, mmmkay"
If they do not want you to attempt to use those libraries, the test cases are able to block that stuff.
I agree that the description is too short.
@anter69: No because:
I wouldn't call this an issue, perhaps a suggestion. And probably history :-)
I feel the same way. I did my solution with only the library that was given to us and I feel kind of misled after looking at the top solutions.
You could clarify the rules a bit. Is it fine to just call libraries that do the work for you?
[Haskell]
0 [0] keeps showing up in the random tests. This should either be removed since 0 wasn't invented by thetime primes were, or the expected behavior for such input should be very explicit.
[Haskell]
There are no test cases to "below" number (i.e. don't include the number if it is equal to the input)
it "testing 33" $ (solution 12)
shouldBe33