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...
radius of a spherical planet
Find the sum of the elements in the "second" diagonal
Implement simple rotation cypher
Multiply 2 numbers
Right Triangle Side Lengths (Inspired by Project Euler Problem 39)
Square Digits Number Chain Terminal Value (Inspired by Project Euler Problem 92)
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