nice (and difficult) problem! (if possible, please fix the testsuite adding something along the lines of "assert(n==numel(unique(c)))")
example of invalid solution
Read a column of numbers and interpolate missing data
Solve the Sudoku Row
Reduce - Map-Reduce
Test Driven Solution - Probability Problem 2
Test Driven Solution - Probability Problem 1
Restricted Subtraction v1
Restricted Multiplication v1
Restricted Addition v1
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