Loading collection data...
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.
yes that solution is not be best because of unnecesary loops.
but yours has unnecessary array size extension (pushs) too. same with array destructuring
brilliant in the sense that it does filter once BUT
not a good solution. filter function should be pure and not make a side effect