Return true if there is a supported GPU device available on the Cody computer.
Distance walked 2D
Return the first and last character of a string
Remove white space from the string
Rotate a Matrix by 90 degrees
Digit concentration in Champernowne's constant
Delete the rows in the middle
Write c^3 as sum of two squares a^2+b^2
Produce the following matrix
Cryptography with A Square Matrix : Encoding
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