Covering some basic topics I haven't seen elsewhere on Cody.
Return a string that is the path to the system's current temp directory
The assert is wrong. Dirs should not be tested as equal strings - slash can be omitted.
Find all elements less than 0 or greater than 10 and replace them with NaN
Which doors are open?
Least common multiple of many numbers
Getting the absolute index from a matrix
Vectorize the digits of an Integer
Back to basics 8 - Matrix Diagonals
Back to basics 13 - Input variables
7 segment LED display
Back to basics 22 - Rotate a matrix
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