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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 thought about it, but I choose not to use it for readibility.
Most probably not a kata issue. Either way it works fine now.
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It's a two-dimensional nested for loop, except instead of using actual for loops it creates arrays of the appropriate size and uses map to iterate over them. Then, it joins the results into a string.
This comment is hidden because it contains spoiler information about the solution
This comment is hidden because it contains spoiler information about the solution