Package it.unimi.dsi.fastutil.objects

Class ObjectAVLTreeSet<K>

java.lang.Object

java.util.AbstractCollection<K>

it.unimi.dsi.fastutil.objects.AbstractObjectCollection<K>

it.unimi.dsi.fastutil.objects.AbstractObjectSet<K>

it.unimi.dsi.fastutil.objects.AbstractObjectSortedSet<K>

it.unimi.dsi.fastutil.objects.ObjectAVLTreeSet<K>

All Implemented Interfaces:

ObjectBidirectionalIterable<K>, ObjectCollection<K>, ObjectIterable<K>, ObjectSet<K>, ObjectSortedSet<K>, Serializable, Cloneable, Iterable<K>, Collection<K>, SequencedCollection<K>, SequencedSet<K>, Set<K>, SortedSet<K>

public class ObjectAVLTreeSet<K>
extends AbstractObjectSortedSet<K>
implements Serializable, Cloneable, ObjectSortedSet<K>

A type-specific AVL tree set with a fast, small-footprint implementation.

The iterators provided by this class are type-specific bidirectional iterators. Moreover, the iterator returned by iterator() can be safely cast to a type-specific list iterator.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
ObjectAVLTreeSet()	Creates a new empty tree set.
ObjectAVLTreeSet(ObjectCollection<? extends K> c)	Creates a new tree set copying a given type-specific collection.
ObjectAVLTreeSet(ObjectSortedSet<K> s)	Creates a new tree set copying a given type-specific sorted set (and its Comparator).
ObjectAVLTreeSet(Collection<? extends K> c)	Creates a new tree set copying a given set.
ObjectAVLTreeSet(Comparator<? super K> c)	Creates a new empty tree set with the given comparator.
ObjectAVLTreeSet(Iterator<? extends K> i)	Creates a new tree set using elements provided by a type-specific iterator.
ObjectAVLTreeSet(SortedSet<K> s)	Creates a new tree set copying a given sorted set (and its Comparator).
ObjectAVLTreeSet(K[] a)	Creates a new tree set copying the elements of an array.
ObjectAVLTreeSet(K[] a, int offset, int length)	Creates a new tree set and fills it with the elements of a given array.
ObjectAVLTreeSet(K[] a, int offset, int length, Comparator<? super K> c)	Creates a new tree set and fills it with the elements of a given array using a given Comparator.
ObjectAVLTreeSet(K[] a, Comparator<? super K> c)	Creates a new tree set copying the elements of an array using a given Comparator.

Method Summary

Modifier and Type	Method	Description
boolean	add(K k)
void	clear()
Object	clone()	Returns a deep copy of this tree set.
Comparator<? super K>	comparator()
boolean	contains(Object k)
K	first()
K	get(Object k)
ObjectSortedSet<K>	headSet(K to)	Returns a view of the portion of this sorted set whose elements are strictly less than toElement.
boolean	isEmpty()
ObjectBidirectionalIterator<K>	iterator()	Returns a type-specific iterator on the elements of this collection.
ObjectBidirectionalIterator<K>	iterator(K from)	Returns a type-specific BidirectionalIterator on the elements in this set, starting from a given element of the domain (optional operation).
K	last()
boolean	remove(Object k)
int	size()
ObjectSortedSet<K>	subSet(K from, K to)	Returns a view of the portion of this sorted set whose elements range from fromElement, inclusive, to toElement, exclusive.
ObjectSortedSet<K>	tailSet(K from)	Returns a view of the portion of this sorted set whose elements are greater than or equal to fromElement.

Methods inherited from class it.unimi.dsi.fastutil.objects.AbstractObjectSet

equals, hashCode

Methods inherited from class it.unimi.dsi.fastutil.objects.AbstractObjectCollection

toString

Methods inherited from class java.util.AbstractCollection

addAll, containsAll, removeAll, retainAll, toArray, toArray

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream, toArray

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface it.unimi.dsi.fastutil.objects.ObjectSortedSet

spliterator

Methods inherited from interface java.util.Set

addAll, containsAll, equals, hashCode, removeAll, retainAll, toArray, toArray

Methods inherited from interface java.util.SortedSet

addFirst, addLast, getFirst, getLast, removeFirst, removeLast, reversed

Constructor Details

ObjectAVLTreeSet

public ObjectAVLTreeSet()

Creates a new empty tree set.

ObjectAVLTreeSet

public ObjectAVLTreeSet(Comparator<? super K> c)

Creates a new empty tree set with the given comparator.

Parameters:

c - a Comparator (even better, a type-specific comparator).

ObjectAVLTreeSet

public ObjectAVLTreeSet(Collection<? extends K> c)

Creates a new tree set copying a given set.

Parameters:

c - a collection to be copied into the new tree set.

ObjectAVLTreeSet

public ObjectAVLTreeSet(SortedSet<K> s)

Creates a new tree set copying a given sorted set (and its Comparator).

Parameters:

s - a SortedSet to be copied into the new tree set.

ObjectAVLTreeSet

public ObjectAVLTreeSet(ObjectCollection<? extends K> c)

Creates a new tree set copying a given type-specific collection.

Parameters:

c - a type-specific collection to be copied into the new tree set.

ObjectAVLTreeSet

public ObjectAVLTreeSet(ObjectSortedSet<K> s)

Creates a new tree set copying a given type-specific sorted set (and its Comparator).

Parameters:

s - a type-specific sorted set to be copied into the new tree set.

ObjectAVLTreeSet

public ObjectAVLTreeSet(Iterator<? extends K> i)

Creates a new tree set using elements provided by a type-specific iterator.

Parameters:

i - a type-specific iterator whose elements will fill the set.

ObjectAVLTreeSet

public ObjectAVLTreeSet(K[] a,
 int offset,
 int length,
 Comparator<? super K> c)

Creates a new tree set and fills it with the elements of a given array using a given Comparator.

Parameters:

a - an array whose elements will be used to fill the set.

offset - the first element to use.

length - the number of elements to use.

c - a Comparator (even better, a type-specific comparator).

ObjectAVLTreeSet

public ObjectAVLTreeSet(K[] a,
 int offset,
 int length)

Creates a new tree set and fills it with the elements of a given array.

Parameters:

a - an array whose elements will be used to fill the set.

offset - the first element to use.

length - the number of elements to use.

ObjectAVLTreeSet

public ObjectAVLTreeSet(K[] a)

Creates a new tree set copying the elements of an array.

Parameters:

a - an array to be copied into the new tree set.

ObjectAVLTreeSet

public ObjectAVLTreeSet(K[] a,
 Comparator<? super K> c)

Creates a new tree set copying the elements of an array using a given Comparator.

Parameters:

a - an array to be copied into the new tree set.

c - a Comparator (even better, a type-specific comparator).

Method Details

add

public boolean add(K k)

Specified by:

add in interface Collection<K>

Specified by:

add in interface Set<K>

Overrides:

add in class AbstractCollection<K>

remove

public boolean remove(Object k)

Specified by:

remove in interface Collection<K>

Specified by:

remove in interface Set<K>

Overrides:

remove in class AbstractCollection<K>

contains

public boolean contains(Object k)

Specified by:

contains in interface Collection<K>

Specified by:

contains in interface Set<K>

Overrides:

contains in class AbstractCollection<K>

get

public K get(Object k)

clear

public void clear()

Specified by:

clear in interface Collection<K>

Specified by:

clear in interface Set<K>

Overrides:

clear in class AbstractCollection<K>

size

public int size()

Specified by:

size in interface Collection<K>

Specified by:

size in interface Set<K>

Specified by:

size in class AbstractCollection<K>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<K>

Specified by:

isEmpty in interface Set<K>

Overrides:

isEmpty in class AbstractCollection<K>

first

public K first()

Specified by:

first in interface SortedSet<K>

last

public K last()

Specified by:

last in interface SortedSet<K>

iterator

public ObjectBidirectionalIterator<K> iterator()

Description copied from interface: ObjectCollection

Returns a type-specific iterator on the elements of this collection.

Specified by:

iterator in interface Collection<K>

Specified by:

iterator in interface Iterable<K>

Specified by:

iterator in interface ObjectBidirectionalIterable<K>

Specified by:

iterator in interface ObjectCollection<K>

Specified by:

iterator in interface ObjectIterable<K>

Specified by:

iterator in interface ObjectSet<K>

Specified by:

iterator in interface ObjectSortedSet<K>

Specified by:

iterator in interface Set<K>

Specified by:

iterator in class AbstractObjectSortedSet<K>

Returns:

a type-specific iterator on the elements of this collection.

See Also:

• Iterable.iterator()

iterator

public ObjectBidirectionalIterator<K> iterator(K from)

Description copied from interface: ObjectSortedSet

Returns a type-specific BidirectionalIterator on the elements in this set, starting from a given element of the domain (optional operation).

This method returns a type-specific bidirectional iterator with given starting point. The starting point is any element comparable to the elements of this set (even if it does not actually belong to the set). The next element of the returned iterator is the least element of the set that is greater than the starting point (if there are no elements greater than the starting point, hasNext() will return false). The previous element of the returned iterator is the greatest element of the set that is smaller than or equal to the starting point (if there are no elements smaller than or equal to the starting point, hasPrevious() will return false).

Note that passing the last element of the set as starting point and calling previous() you can traverse the entire set in reverse order.

Specified by:

iterator in interface ObjectSortedSet<K>

Parameters:

from - an element to start from.

Returns:

a bidirectional iterator on the element in this set, starting at the given element.

comparator

public Comparator<? super K> comparator()

Specified by:

comparator in interface SortedSet<K>

headSet

public ObjectSortedSet<K> headSet(K to)

Description copied from interface: ObjectSortedSet

Returns a view of the portion of this sorted set whose elements are strictly less than toElement.

Specified by:

headSet in interface ObjectSortedSet<K>

Specified by:

headSet in interface SortedSet<K>

See Also:

• SortedSet.headSet(Object)

tailSet

public ObjectSortedSet<K> tailSet(K from)

Description copied from interface: ObjectSortedSet

Returns a view of the portion of this sorted set whose elements are greater than or equal to fromElement.

Specified by:

tailSet in interface ObjectSortedSet<K>

Specified by:

tailSet in interface SortedSet<K>

See Also:

• SortedSet.tailSet(Object)

subSet

public ObjectSortedSet<K> subSet(K from,
 K to)

Description copied from interface: ObjectSortedSet

Returns a view of the portion of this sorted set whose elements range from fromElement, inclusive, to toElement, exclusive.

Specified by:

subSet in interface ObjectSortedSet<K>

Specified by:

subSet in interface SortedSet<K>

See Also:

• SortedSet.subSet(Object,Object)

clone

public Object clone()

Returns a deep copy of this tree set.

This method performs a deep copy of this tree set; the data stored in the set, however, is not cloned. Note that this makes a difference only for object keys.

Returns:

a deep copy of this tree set.