Some people may be surprised by the credits on this. When thinking about porting the exercise to Julia, I found that it originated on something called “Exercism Research” (which I never heard of before), with Sascha and Jeremy as co-authors.
I had no idea Jeremy ever used Julia. He must have loved the example solution which begins with the import using LinearAlgebra.
I should also add that the old code fails the current tests (which include some tricky edge cases). I fixed that, then @depial shortened my 35-line solution to 3 lines. Sometimes, it helps to know what you’re doing…