This solution only works for vectors that are already sorted from low to high :) but it passed the test suite
Select every other element of a vector
Create a cell array out of a struct
Change the sign of even index entries of the reversed vector
Basic arrays operations.
Find the elements of a matrix according to a defined property.
Remove NaN ?
Matrix which contains the values of an other matrix A at the given locations.
Remove from a 2-D matrix all the rows that contain at least one element less than or equal to 4
A quadrant matrix
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