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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.
I guess because it's more comprehensive and declarative.
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One must be carefull with this method, because when you pass "int[] array", you pass a reference to the array. So, after the completion of the method the source array is also inverted.
else is not necessary here, i++ is enough)
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And what about ArrayIndexOutOfBoundsException?)
But you don't provide a check for not valid input in this code, so that's really not good practice)