From a usability point of view, returning a string to indicate nothing found is probably the worst. an empty value or 0 would be much better.
Guillaume, I would say that that depends upon the intended 'audience' for the output.
Check if sorted
Swap the input arguments
Simple equation: Annual salary
Convert radians to degrees
Matlab Basics - Assigning Variables
Matlab Basics II - Max & Index of Max
Matlab Basics - Rounding I
Matlab Basics - Rounding II
Matlab Basics - y as a function of x
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