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...
random picture with random colours
Column norms of a matrix
Duplicate a character
Number of digits in an integer
Television Screen Dimensions
Make a 1 hot vector
Square Digits Number Chain Terminal Value (Inspired by Project Euler Problem 92)
Inhomogenous Depth Scale Interpolation
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