May be I am wrong. But, are test 7 and 8 correct?
Looks like 7 and 8 should use fit(x), not fit(x,y).
Sorry for that. Fixed now.
Every test is correct. The problem with the circle packing algorithm is precision. Set the precision wrongly and we will miss a lot of circles (It was fun to revisit this kind of problem). And btw, the upper bound for circle packing in the plane is pi/sqrt(12) of the total area. Ignore the spheres in the question, it's a circle packing problem ("easy" version, since we already have the radii).
Great Circle Distance
Project Euler: Problem 3, Largest prime factor
middleAsColumn: Return all but first and last element as a column vector
07 - Common functions and indexing 1
NCHOOSEK - Time Optimization
Polite numbers. Politeness.
Pancake sorting - minimum flips.
Don't Try, give up and return NaN.
Calculate the Damerau-Levenshtein distance between two strings.
Which permutation is it?
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