Can you give us any hints? I tried findobj() but can't make progress!
You are on the right track with findobj(). The trick is what the call to "legend" does to the objects that make the solution very simple.
Summing Digits within Text
Create a cell array out of a struct
Program an exclusive OR operation with logical operators
Basics: Divide integers to get integer outputs in all cases
Big numbers, repeated least significant digits
Big numbers, least significant digits
Generate a NaN...on purpose
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