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 two-word state names
Distance walked 1D
Permute diagonal and antidiagonal
Divisors of an integer
Find a Pythagorean triple
First N Perfect Squares
The Dark Side of the Die
Inhomogenous Depth Scale Interpolation
Lychrel Number Test (Inspired by Project Euler Problem 55)
N-Dimensional Array Slice
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