Return true if the input is a Smith number in base ten. Otherwise, return false. Read about Smith numbers at http://en.wikipedia.org/wiki/Smith_number.
A Smith number must be positive and have more than one factor.
Find the two most distant points
letter yes yes & letter no no
Find a subset that divides the vector into equal halves
Is the input divisible by 3?
Get input and output variable names
Test within tolerance
Split up vector or matrix delimited by NaNs
Remove TeX from string
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