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.
why
Current method mutate original array
Nice idea with using array instrad of dictionary. But what the point to use 2^16 size instead of 26?
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This comment is hidden because it contains spoiler information about the solution