The problem description is broken(?) and you have mentioned the code in the test suite (you might want to remove that)
The test suite has had the "solution" code removed. The description was also cleaned up. (If it's not loading, simply reload the page.) I'm not sure how much these fixes help, though...
Increment a number, given its digits
Determine Whether an array is empty
frame of the matrix
remove nans fast
Convert a Cell Array into an Array
Convert vector datasets to plot with imagesc instead of scatter
Is this number Munchhausen Narcissistic?
Strange Number Algorithms
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