Convert the input to a cell array, but only if necessary.
If the input is a string, return a 1-by-1 cell array containing the string. If the input is a cell array of strings, return the input unaltered.
Who invented zero?
Find a Pythagorean triple
Determine the length of a string of characters
The Python Challenge, Level 1: Decode strings
Check if a directory is on the current MATLAB search path
Get factory-defined property values
Check if vertices form a rectangle
Extra safe primes
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