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.
This solution was written before
.sum
existed :)why not just sum instead of map
I didn't know about lazy enumerables until your comment. Thank you!
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cool kata
good kata