Year ago I wrote a very simple SAT solver in Java. I initially used List but later primitive arrays to represent my formulas and clauses. The change made a mode

Year ago I wrote a very simple SAT solver in Java. I initially used List but later primitive arrays to represent my formulas and clauses. The change made a modest and measurable difference, but I agree with the author's suggestion that if you don't already care about the difference in boxed and primitive performance then you're likely fine using the standard Java collections.