Given a pathname string, return a condensed version by replacing intermediate folders with '..'.
fullpath = 'C:\foo\bar\baz\qux';
shortpath = 'C:\..\qux';
Additional test cases have been added.
Omit columns averages from a matrix
2 b | ~ 2 b
Flip the main diagonal of a matrix
Who invented zero?
Extra safe primes
Number of active Cody players by date
Numeric array to cell array of strings (easy)
Convert ColorSpec string to RGB triplet
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