Change given string to number. (hint: there is already function)
Changing from ['1234'] to  is one of example
Please expand the test suite so that solutions like this do not work.
Filter AC, pass DC
Increment a number, given its digits
Check if number exists in vector
Doubling elements in a vector
Switch matrix to a column vector
Weighted moving average
Calculate geostrophic current
Solve the system of linear equations
Extract a specific part of matrix!
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