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.
Remove NaN ?
Scoring for oriented dominoes
Flag largest magnitude swings as they occur
Implement simple rotation cypher
Test if two numbers have the same digits
Remove TeX from string
Split up vector or matrix delimited by NaNs
Test within tolerance
Get input and output variable names
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