public class LongArraySet extends AbstractLongSet implements Serializable, Cloneable
The main purpose of this implementation is that of wrapping cleanly the brute-force approach to the storage of a very small number of items: just put them into an array and scan linearly to find an item.
| Constructor and Description |
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LongArraySet()
Creates a new empty array set.
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LongArraySet(Collection<? extends Long> c)
Creates a new array set copying the contents of a given set.
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LongArraySet(int capacity)
Creates a new empty array set of given initial capacity.
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LongArraySet(long[] a)
Creates a new array set using the given backing array.
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LongArraySet(long[] a,
int size)
Creates a new array set using the given backing array and the given number of elements of the array.
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LongArraySet(LongCollection c)
Creates a new array set copying the contents of a given collection.
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| Modifier and Type | Method and Description |
|---|---|
boolean |
add(long k)
Ensures that this collection contains the specified element (optional operation).
|
void |
clear() |
LongArraySet |
clone()
Returns a deep copy of this set.
|
boolean |
contains(long k)
Returns
true if this collection contains the specified element. |
boolean |
isEmpty() |
LongIterator |
iterator()
Returns a type-specific iterator on the elements of this collection.
|
boolean |
remove(long k)
Removes an element from this set.
|
int |
size() |
equals, hashCode, remadd, addAll, contains, containsAll, remove, removeAll, retainAll, toArray, toLongArray, toLongArray, toStringaddAll, containsAll, removeAll, retainAll, toArray, toArrayaddAll, containsAll, removeAll, removeIf, removeIf, retainAll, toArray, toLongArray, toLongArrayforEach, forEachaddAll, containsAll, removeAll, retainAll, spliterator, toArray, toArrayparallelStream, streampublic LongArraySet(long[] a)
It is responsibility of the caller that the elements of a are distinct.
a - the backing array.public LongArraySet()
public LongArraySet(int capacity)
capacity - the initial capacity.public LongArraySet(LongCollection c)
c - a collection.public LongArraySet(Collection<? extends Long> c)
c - a collection.public LongArraySet(long[] a,
int size)
It is responsibility of the caller that the first size elements of a are distinct.
a - the backing array.size - the number of valid elements in a.public LongIterator iterator()
LongCollectionNote that this specification strengthens the one given in
Iterable.iterator(), which was already
strengthened in the corresponding type-specific class,
but was weakened by the fact that this interface extends Collection.
iterator in interface LongCollectioniterator in interface LongIterableiterator in interface LongSetiterator in interface Iterable<Long>iterator in interface Collection<Long>iterator in interface Set<Long>iterator in class AbstractLongSetIterable.iterator()public boolean contains(long k)
AbstractLongCollectiontrue if this collection contains the specified element.
This implementation iterates over the elements in the collection, looking for the specified element.
contains in interface LongCollectioncontains in class AbstractLongCollectionCollection.contains(Object)public int size()
size in interface Collection<Long>size in interface Set<Long>size in class AbstractCollection<Long>public boolean remove(long k)
AbstractLongSetNote that the corresponding method of a type-specific collection is rem().
This unfortunate situation is caused by the clash
with the similarly named index-based method in the List interface.
Delegates to the type-specific rem() method
implemented by type-specific abstract Collection superclass.
remove in interface LongSetremove in class AbstractLongSetCollection.remove(Object)public boolean add(long k)
AbstractLongCollectionThis implementation always throws an UnsupportedOperationException.
add in interface LongCollectionadd in class AbstractLongCollectionCollection.add(Object)public void clear()
clear in interface Collection<Long>clear in interface Set<Long>clear in class AbstractCollection<Long>public boolean isEmpty()
isEmpty in interface Collection<Long>isEmpty in interface Set<Long>isEmpty in class AbstractCollection<Long>public LongArraySet clone()
This method performs a deep copy of this array set; the data stored in the set, however, is not cloned. Note that this makes a difference only for object keys.