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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.
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"The restriction is that the characters in part1 and part2 should be in the same order as in s."
It should return False. The tests must not be very thorough!
Is it correct that this solution
isMerge "abc" "ca" "b"
returns True?