##Leap My code: here
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Responder #1 (here) - This solution is very close to mine, but with a one line return method, which makes it more efficient.
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Responder #2 (here) - I liked this implementation. It's short and clear. Rather than using a if statement, this person is just returning the result of a combination of comparisons (true or false).
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Responder #3 (here) - This person used a nested conditional, which made the implementation more complicated than what it needed to be.
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Responder #4 (here) - This solution used an if statement, however the user added an extra step to return false in case that the else if statement evaluated false, which is unnecessary.