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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.
Node 12.x should be enabled.
It seems to me that arrays need a medium and entropy will cause all mediums to fail in time, making all arrays temporary in the long run. Which makes it difficult to use the input array, if i'm not allowed to use any temporary array. At least that is my excuse for not understanding the nature of how computer folk define temporary.
The charcode for A is 65, and it needs to map to 1 in this exercise. The rest of the letter charcodes are followed alphabetically in ASCII/UTF-8