private void remove(
Sorted<Integer> sorted, int startIndex, int nrIterations, int[] itemsToRemove) {
for (int i = startIndex; i < startIndex + nrIterations; i++) {
sleep();
sorted.remove(itemsToRemove[i]);
}
}
private void add(Sorted<Integer> sorted, int startIndex, int nrIterations, int[] itemsToAdd) {
for (int i = startIndex; i < startIndex + nrIterations; i++) {
sleep();
sorted.add(itemsToAdd[i]);
}
}