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...
First N Perfect Squares
Back to basics 3 - Temp Directory
Sum the elements in either diagonal of a square matrix
Return the first and last character of a string
N-Dimensional Array Slice
Multiples of a Number in a Given Range
Solve the Sudoku Row
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