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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.
The permutation way will have too much memory overheads and time overheads to rearrange the string and go througn the rearranged string list.
If you try to generate the permutations of string, of course you'll got
timeout
;-)Please try again with other way.