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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.
Maybe one boat is in contact with anyother boat ,you can limit the number of 1
that's not a problem: you do only 1 single pass to replace the characters. ;)
I have a question.
if the test value is "(()", I first replace "(" with ")",then replace ")" with "(".
The result will be "((("
How can I solve this problem.