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...
Sums with Excluded Digits
Calculate the Levenshtein distance between two strings
Similar Triangles - find the height of the tree
Is it an Armstrong number?
07 - Common functions and indexing 2
Generalized N-Cards Problem
Triangle Numbers Below N
Specific Element Count
Determine if a Given Number is a Triangle Number
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