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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.
Can someone tell me if I'm reading this wrong...
The description says that week 1 starts with the first Monday in January. For 2019, the first Monday is January 7. Therefore, January 1 2019 is not in week 1, it should be in the last week of 2018.
But the description and tests all assert that January 1 2019 is in week 1.
This does not check if the array is a valid matrix