Java 9 Programming By Example

Implementing the API class

Having done all this, the last thing we will need is to have QuickSort as a simple class (all the real work was already done in different classes).

public class QuickSort<E> implements Sort<E> {     public void sort(SortableCollection<E> sortable) {         int n = sortable.size();         Qsort<E> qsort = new Qsort<>(comparator,swapper);         qsort.qsort(sortable, 0, n-1);     } // ... setter injectors were deleted from the print }

Do not forget that we also need a test! But, in this case, that is not much different than that of BubbleSort.

@Test public void canSortStrings() {     final String[] actualNames = new String[]{             "Johnson", "Wilson",             "Wilkinson", "Abraham", "Dagobert"     };  final String[] expected = new String[]{"Abraham", ...