Just find the number of columns of the given matrix.
x = [1 2
y = 2
Maby this one needs some more test suites ;)
improve test suit
Maybe more test cases here? ;-)
Find all elements less than 0 or greater than 10 and replace them with NaN
The Goldbach Conjecture
Add a row of zeros on top of a matrix
Determine the square root
Convert a number to its Roman representation
Concatenate two strings
Find the area of the four walls
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