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? ;-)
Swap the first and last columns
Remove the air bubbles
Create a square matrix of multiples
Will there be a new leader?
Find the square of the sum of the digits of a number
Create the following sequence : 0 1 1 4 9 25 64 169 ...
Reverse a matrix
Convert a number to its Roman representation
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