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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.
I think the author should add a test 'string' argument doesn't have only 0 without 1
'0' or 'asf0' is invalid value of argument because '0' is invalid value of push ups
There is an extra condition in the third line !s.includes('0')
All numbers in binary bigger than 0 have 1
We start counting push-ups from 1