Everyone, I've modified the test suite such that common cheats won't work; i.e., regexp/rep, interp1/2/3, num2str, str2num, etc. are disallowed! General numerical solutions, however, are most welcome.
letter yes yes & letter no no
Find the nearest integer
Volume of a Simplex
Dots in a Sphere
Shifted Hexagonal Tiling Dots in a Circle
Dots in a Diamond
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