Please improve the test suite. There are two glaring problems. First, there is only one test case—it is recommended that at least three be provided, though more are often necessary to prevent hard-coded workarounds. Second, do not provide the solution in the test case(s). For such a problem, the answer should be calculated beforehand and provided as a predefined number to hide the solution. Furthermore, candidate functions can be checked against the solution using an adequate error bound (perhaps within 1E-3) rather than isequal().
Return the 3n+1 sequence for n
Find common elements in matrix rows
Is My Wife Wrong?
Your favourite city!
Find the Oldest Person in a Room
Find the mean of two vectors
Vector indexing: lower than mean
Replace 0 indices in array with 1's
Simple String Concatenation
Vector Element Multiplication
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