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...
Find the alphabetic word product
Replace NaNs with the number that appears to its left in the row.
Next Lower Power of B
Inhomogenous Depth Scale Interpolation
Generate N equally spaced intervals between -L and L
Great Circle Distance
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