Nice expression for the usage test. Maybe one can add function "dec2base", cause the return type is a String.
The problem description should mention that dec2base isn't allowed either.
This will fail to detect certain palindromes which contain zero e.g. 10101 however the test suite doesn't (yet) contain any such.
There's something strange with the Cody test suites today...
DNA N-Gram Distribution
First N Perfect Squares
Remove NaN ?
Energy of a photon
Output any real number that is neither positive nor negative
Television Screen Dimensions
The Dark Side of the Die
Return the first and last characters of a character array
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