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.
Determine if a Given Number is a Triangle Number
Is my wife right? Now with even more wrong husband
Similar Triangles - find the height of the tree
Back to basics 25 - Valid variable names
Find my daddy long leg (No 's')
Divisible by 5
Radiation Heat Transfer — View Factors (2)
Stress-Strain Properties - 8
Divisible by 16
Divisible by n, Composite Divisors
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