Collections.sort(possibleCenters, new ModuleSizeComparator());
Collections.sort(possibleCenters, new ModuleSizeComparator());
Collections.insertionSort(possibleCenters, new ModuleSizeComparator());
Collections.sort(possibleCenters, new ModuleSizeComparator());
Collections.sort(possibleCenters, new ModuleSizeComparator());
Collections.insertionSort(possibleCenters, new ModuleSizeComparator());