Maby this one needs some more test suites ;)
improve test suit
Maybe more test cases here? ;-)
Convert a numerical matrix into a cell array of strings
Angle between two vectors
Number of 1s in a binary string
Basics: 'Find the eigenvalues of given matrix
Create a Matrix of Zeros
Convert a number to its Roman representation
Find the square of the sum of the digits of a number
Reverse a matrix
Concatenate two strings
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