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removeAll is now O(n+m) if both lists are sorted

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Andreas Huber
2018-11-20 19:53:33 +01:00
parent 430b4c50ca
commit ee04f21f29
4 changed files with 105 additions and 10 deletions
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22
primitiveCollections/src/test/java/org/lucares/collections/IntListTest.java
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@@ -1114,6 +1114,28 @@ public class IntListTest {
Assertions.assertEquals(0, list.size());
}
@Test
public void testRemoveAllFromSortedList() {
final IntList list = IntList.of(1, 2, 3, 4, 5);
final IntList remove = IntList.of(1, 3);
list.removeAll(remove);
Assertions.assertArrayEquals(new int[] { 2, 4, 5 }, list.toArray());
Assertions.assertEquals(3, list.size());
Assertions.assertTrue(list.isSorted());
}
@Test
public void testRemoveAllFromSortedList2() {
final IntList list = IntList.of(2, 4, 4, 6, 8);
final IntList remove = IntList.of(1, 4, 9);
list.removeAll(remove);
Assertions.assertArrayEquals(new int[] { 2, 6, 8 }, list.toArray());
Assertions.assertEquals(3, list.size());
Assertions.assertTrue(list.isSorted());
}
@Test
public void testRetainAll() {
final IntList list = IntList.of(-2, -1, 0, 1, 2, 3, 4, 5, 6);

22
primitiveCollections/src/test/java/org/lucares/collections/LongListTest.java
View File

@@ -1104,6 +1104,28 @@ public class LongListTest {
Assertions.assertEquals(0, list.size());
}
@Test
public void testRemoveAllFromSortedList() {
final LongList list = LongList.of(1, 2, 3, 4, 5);
final LongList remove = LongList.of(1, 3);
list.removeAll(remove);
Assertions.assertArrayEquals(new long[] { 2, 4, 5 }, list.toArray());
Assertions.assertEquals(3, list.size());
Assertions.assertTrue(list.isSorted());
}
@Test
public void testRemoveAllFromSortedList2() {
final LongList list = LongList.of(2, 4, 4, 6, 8);
final LongList remove = LongList.of(1, 4, 9);
list.removeAll(remove);
Assertions.assertArrayEquals(new long[] { 2, 6, 8 }, list.toArray());
Assertions.assertEquals(3, list.size());
Assertions.assertTrue(list.isSorted());
}
@Test
public void testRetainAll() {
final LongList list = LongList.of(-2, -1, 0, 1, 2, 3, 4, 5, 6);