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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.
it's really sad he didn't answer :'D
you can write [...Array(columns).keys()] and get the same result as _.range(columns) without using lodash
I was a little bit confised at first, because I didn't see that granny also need to return home)) It's written in the description though ("the total distance X0X1 + X1X2 + .. + X4X0"), but at first glance seems like "permits her to visit her friends" was not going to include returning home. Maybe it can help someone who's also stuck