Please improve the test suite. There is only one test case—three is a recommended minimum, though more may be necessary to completely and adequately test what is being asked.
Remove the vowels
Back to basics 5 - Clipboard
Sum the elements in either diagonal of a square matrix
find the roots of a quadratic equation
Remove the positive integers.
Find the index of the lowest number in a matrix
More Simple String Concatenation
Sum two matrices
Matrix Max Finder
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