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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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Need a test case like the following: {9,10,14,12,13}
This case would fail several of the accepted answers because they check for more than one instance of prev > current as a fail condition.
Thinking there should be a test case where n is 0. A lot of the solutions that don't convert n to a String will throw an exception if 0 is passed in because we try to Integer.parseInt an empty string.
What happens if n is 0?
I'm thinking parseInt("") is going to throw a conniption fit!