This solution is correct to within eps, but the test is expecting exact agreement. That is not good programming when dealing with floating point numbers.
Function composition - harder
Remove the two elements next to NaN value
Make a run-length companion vector
Matrix with different incremental runs
Order of things - 4
Number of problems
Power supply: 230V to 115V
Convert nested struct-array to numeric array
Add a row of zeros on top of a matrix
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