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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.
The current top solution would return true for a test case like this that should be false:
[1,[1]].sameStructureAs([1,[[[]]]]);
It's not the same structure as the 2nd array has a nesting of several arrays deeper than the first.