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.
Summing Digits within Text
Implement simple rotation cypher
MATLAB Basic: rounding II
Guess the Coefficients!
Right Triangle Side Lengths (Inspired by Project Euler Problem 39)
Specific Element Count
Cache me Outside
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