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 numeric mean of the prime numbers in a matrix.
Reverse Run-Length Encoder
Extract leading non-zero digit
Check that number is whole number
Return the 'Size' of a String of Code
English to Pig Latin Translator
Check to see if a Sudoku Puzzle is Solved
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