This should be quite straightforward but at 2a.m. my brains are not working 100%. ;)
I has exactly the same idea!!
but on the second line I used directly the logical indexing... ;-)
Alphabetize by last name
Determine Whether an array is empty
Test if two numbers have the same digits
Mmm! Multi-dimensional Matrix Multiplication
Insert certain elements into a vector.
Robust alignment of coordinate system
Bleed non-zeros to the right using REGEXP, and that sort of cheatcodess...
Bleed non-zeros to the right
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