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...
Extract leading non-zero digit
Arrange Vector in descending order
First non-zero element in each column
peta to nano (x-ray)
Find the largest value in the 3D matrix
Reverse the Words (not letters) of a String
Generate N equally spaced intervals between -L and L
Solve the Sudoku Row
Project Euler: Problem 16, Sums of Digits of Powers of Two
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