Author/reference solution fails against a lot of test cases, such as

getWeights(24, 0, [11, 6])
Expected: [6, 6], instead got: [null]

Random test sometimes times out by itself.

Sanity check: [null] is not an appropriate return type; null is.

I can't understand, how those weight adjustments are supposed to work. While description says "adjusting it by 5%", test results do not match with what i was expecting. For example: test with totalWeight: 77.5, barWeight: 15.5 and availablePlates: [38.25,38,32.25,14.25,8.5,4.75] expects [null] even thought using 1 plate of 32.25 on each side gives you total weight of 80, which is ~3% adjustment. Another example is totalWeight: 86.5, barWeight: 17.75, and availablePlates: [36.75,35,32.75,24,17.75,15,13,12.5,5.5], that expects [32.75] (total weight of 83.25, ~3.7% adjustment) instead of [35] (87.75 total, ~1.4% adjustment).