In addition to the weak test suite: The title of the problem says "Sinus function", yet the (incomplete) problem description mentions only "cosine" ??? Furthermore, should abs(cos(-x)) be assigned to y, or to z?
The test description has been updated. Also, new and improved test suites are added within the scope of the problem.
Please improve the test cases. Returning 1 and -1 is complete enough with these sloppy tests.
bad test suite
The test suite is not very rigorous...
Find the longest sequence of 1's in a binary sequence.
Return a list sorted by number of occurrences
Sorted highest to lowest?
Will there be a new leader?
Flip the vector from right to left
Given a matrix, return the last eigen value
Center of mass
Find the function
Inverse of Hilbert matrix
frame of the matrix
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