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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.
it runs faster if you use slength in your loop. And even more if you save s.charAt(i) in a temp variable.
This only works with ASCII, not with EBCDIC.