java filter list of dupllicate netries
public void
givenListContainsDuplicates_whenRemovingDuplicatesWithJava8_thenCorrect() {
List<Integer> listWithDuplicates = Lists.newArrayList(5, 0, 3, 1, 2, 3, 0, 0);
List<Integer> listWithoutDuplicates = listWithDuplicates.stream()
.distinct()
.collect(Collectors.toList());
assertThat(listWithoutDuplicates, hasSize(5));
assertThat(listWithoutDuplicates, containsInAnyOrder(5, 0, 3, 1, 2));
}