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.
Column norms of a matrix
Back to basics - mean of corner elements of a matrix
Sum of series I
Divisible by 3
Divisible by 4
Evened up (or not)
Highly divisible triangular number (inspired by Project Euler 12)
Word Search Solver
Temperature Conversion Utility (Strings)
Combined Ages 2 - Symmetric, n ≥ 3
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