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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.
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i did same but like a dum added another statement which is unnecessary
ty!
bery brillinats , thanks
Tests are still using
Test.assertSimilar
in place of whereTest.assertDeepEquals
is appropriate.Duplicate of https://www.codewars.com/kata/54492291ec342c4a440008c5.
What about
k < 0
? If you're testingk > arr.length
, I don't see why this is not included.Is there any reasons
return null
is tested? Is there any case where this value will be useful? If someone's consuming the combinations the only way this causes visible difference is when using the old-school.next()
and manually inspects the value, which almost nobody does compared to standard use cases likefor ... of
and[...]
.Considering the kata is referencing
itertools
, in Python the return value of a generator is considered to be ignored, unless you try hard, but then this would be very un-Pythonic.Throwing an exception in case of invalid input makes much more sense.
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This is almost too easy. It works though, nice.
I solved it with using regexp
Not a suggestion.
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this problem is painful
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