Converted ArrayLists to LinkedLists for DropTableBuilder,
WeightedDropTable, and DropUtils as there are only
additions/deletions to those Lists and no searches.
Converted private ArrayLists to Arrays in WeightedDropTable.
Renamed Pattern and Matcher in DropUtils for better readability and
removed extraneous logging leftover from prior debugging.
Converted ArrayLists to LinkedLists for DropTableBuilder, WeightedDropTable, and DropUtils as there are only additions/deletions to those Lists and no searches.
Converted private ArrayLists to Arrays in WeightedDropTable.
Renamed Pattern and Matcher in DropUtils for better readability and removed extraneous logging leftover from prior debugging.