If my over-use of str2num has in any way caused offense, I hereby beg leave to apologize.
My hat's off to you for such a solution. I'm baffled as to how to decode it (pun intended). I know that there has been a lot of furor over the use of regexp and other string-based functions, conversions, etc. to lower solution sizes for problems in general, but this problem is string-based, so I see no problem in solving it via arcane string methods.
Counting in Finnish
Back to basics 12 - Input Arguments
Whether the input is vector?
Find a subset that divides the vector into equal halves
Determine if input is a Narcissistic number
Lights Out 15 - 5x5, broken buttons I
Scrabble Scores - 9
Scrabble Scores - 7
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