The problem description is broken(?) and you have mentioned the code in the test suite (you might want to remove that)
The test suite has had the "solution" code removed. The description was also cleaned up. (If it's not loading, simply reload the page.) I'm not sure how much these fixes help, though...
Remove the air bubbles
Is A the inverse of B?
Insert zeros into vector
Replace multiples of 5 with NaN
What is Sum Of all elements of Matrix
remove nans fast
Create numeric palindromes and their square roots
Is this number Munchhausen Narcissistic?
Tony's trick for duplicating an mx1 vector n times
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