// Resize the sorted list to the new capacity.
private void changeSortedListCapacity(int newCapacity) {
assert mapType == MapType.SORTED_LIST;
assert newCapacity >= num;
String[] oldKeys = keys;
double[] oldValues = values;
allocate(newCapacity);
System.arraycopy(oldKeys, 0, keys, 0, num);
System.arraycopy(oldValues, 0, values, 0, num);
}
