it.unimi.dsi.fastutil.ints

Class Int2ObjectAVLTreeMap<V>

java.lang.Object

it.unimi.dsi.fastutil.ints.AbstractInt2ObjectFunction<V>

it.unimi.dsi.fastutil.ints.AbstractInt2ObjectMap<V>

it.unimi.dsi.fastutil.ints.AbstractInt2ObjectSortedMap<V>

it.unimi.dsi.fastutil.ints.Int2ObjectAVLTreeMap<V>

All Implemented Interfaces:

Function<Integer,V>, Int2ObjectFunction<V>, Int2ObjectMap<V>, Int2ObjectSortedMap<V>, Serializable, Cloneable, Map<Integer,V>, SortedMap<Integer,V>

public class Int2ObjectAVLTreeMap<V>
extends AbstractInt2ObjectSortedMap<V>
implements Serializable, Cloneable

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

The iterators provided by the views of 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

Nested Class Summary

Nested classes/interfaces inherited from class it.unimi.dsi.fastutil.ints.AbstractInt2ObjectSortedMap

AbstractInt2ObjectSortedMap.KeySetIterator<V>, AbstractInt2ObjectSortedMap.ValuesCollection, AbstractInt2ObjectSortedMap.ValuesIterator<V>

Nested classes/interfaces inherited from class it.unimi.dsi.fastutil.ints.AbstractInt2ObjectMap

AbstractInt2ObjectMap.BasicEntry<V>

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.ints.Int2ObjectSortedMap

Int2ObjectSortedMap.FastSortedEntrySet<V>

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.ints.Int2ObjectMap

Int2ObjectMap.FastEntrySet<V>

Field Summary

Fields

Modifier and Type	Field and Description
protected IntComparator	actualComparator This map's actual comparator; it may differ from storedComparator because it is always a type-specific comparator, so it could be derived from the former by wrapping.
protected int	count Number of entries in this map.
protected ObjectSortedSet<Int2ObjectMap.Entry<V>>	entries Cached set of entries.
protected it.unimi.dsi.fastutil.ints.Int2ObjectAVLTreeMap.Entry<V>	firstEntry The first key in this map.
protected IntSortedSet	keys Cached set of keys.
protected it.unimi.dsi.fastutil.ints.Int2ObjectAVLTreeMap.Entry<V>	lastEntry The last key in this map.
protected boolean	modified The value of this variable remembers, after a put() or a remove(), whether the domain of the map has been modified.
static long	serialVersionUID
protected Comparator<? super Integer>	storedComparator This map's comparator, as provided in the constructor.
protected it.unimi.dsi.fastutil.ints.Int2ObjectAVLTreeMap.Entry<V>	tree A reference to the root entry.
protected ObjectCollection<V>	values Cached collection of values.

Fields inherited from class it.unimi.dsi.fastutil.ints.AbstractInt2ObjectFunction

defRetValue

Constructor Summary

Constructors

Constructor and Description
Int2ObjectAVLTreeMap() Creates a new empty tree map.
Int2ObjectAVLTreeMap(Comparator<? super Integer> c) Creates a new empty tree map with the given comparator.
Int2ObjectAVLTreeMap(int[] k, V[] v) Creates a new tree map using the elements of two parallel arrays.
Int2ObjectAVLTreeMap(int[] k, V[] v, Comparator<? super Integer> c) Creates a new tree map using the elements of two parallel arrays and the given comparator.
Int2ObjectAVLTreeMap(Int2ObjectMap<? extends V> m) Creates a new tree map copying a given map.
Int2ObjectAVLTreeMap(Int2ObjectSortedMap<V> m) Creates a new tree map copying a given sorted map (and its Comparator).
Int2ObjectAVLTreeMap(Map<? extends Integer,? extends V> m) Creates a new tree map copying a given map.
Int2ObjectAVLTreeMap(SortedMap<Integer,V> m) Creates a new tree map copying a given sorted map (and its Comparator).

Method Summary

Methods

Modifier and Type	Method and Description
void	clear() Removes all associations from this function (optional operation).
Int2ObjectAVLTreeMap<V>	clone() Returns a deep copy of this tree map.
IntComparator	comparator() Returns the comparator associated with this sorted set, or null if it uses its keys' natural ordering.
boolean	containsKey(int k) Checks whether the given value is contained in AbstractInt2ObjectMap.keySet().
boolean	containsValue(Object v) Checks whether the given value is contained in AbstractInt2ObjectMap.values().
int	firstIntKey()
V	get(int k) Returns the value to which the given key is mapped.
Int2ObjectSortedMap<V>	headMap(int to) Returns a view of the portion of this sorted map whose keys are strictly less than toKey.
ObjectSortedSet<Int2ObjectMap.Entry<V>>	int2ObjectEntrySet() Returns a type-specific sorted-set view of the mappings contained in this map.
boolean	isEmpty()
IntSortedSet	keySet() Returns a type-specific sorted set view of the keys contained in this map.
int	lastIntKey()
V	put(Integer ok, V ov) Delegates to the corresponding type-specific method, taking care of returning null on a missing key.
V	put(int k, V v) Adds a pair to the map.
V	remove(int k) Removes the mapping with the given key.
V	remove(Object ok) Delegates to the corresponding type-specific method, taking care of returning null on a missing key.
int	size() Returns the intended number of keys in this function, or -1 if no such number exists.
Int2ObjectSortedMap<V>	subMap(int from, int to) Returns a view of the portion of this sorted map whose keys range from fromKey, inclusive, to toKey, exclusive.
Int2ObjectSortedMap<V>	tailMap(int from) Returns a view of the portion of this sorted map whose keys are greater than or equal to fromKey.
ObjectCollection<V>	values() Returns a type-specific collection view of the values contained in this map.

Methods inherited from class it.unimi.dsi.fastutil.ints.AbstractInt2ObjectSortedMap

entrySet, firstKey, headMap, lastKey, subMap, tailMap

Methods inherited from class it.unimi.dsi.fastutil.ints.AbstractInt2ObjectMap

equals, hashCode, putAll, toString

Methods inherited from class it.unimi.dsi.fastutil.ints.AbstractInt2ObjectFunction

containsKey, defaultReturnValue, defaultReturnValue, get

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface it.unimi.dsi.fastutil.ints.Int2ObjectFunction

defaultReturnValue, defaultReturnValue

Methods inherited from interface it.unimi.dsi.fastutil.Function

containsKey, get

Methods inherited from interface java.util.Map

containsKey, equals, get, hashCode, putAll

Field Detail

tree

protected transient it.unimi.dsi.fastutil.ints.Int2ObjectAVLTreeMap.Entry<V> tree

A reference to the root entry.

count

protected int count

Number of entries in this map.

firstEntry

protected transient it.unimi.dsi.fastutil.ints.Int2ObjectAVLTreeMap.Entry<V> firstEntry

The first key in this map.

lastEntry

protected transient it.unimi.dsi.fastutil.ints.Int2ObjectAVLTreeMap.Entry<V> lastEntry

The last key in this map.

entries

protected transient volatile ObjectSortedSet<Int2ObjectMap.Entry<V>> entries

Cached set of entries.

keys

protected transient volatile IntSortedSet keys

Cached set of keys.

values

protected transient volatile ObjectCollection<V> values

Cached collection of values.

modified

protected transient boolean modified

The value of this variable remembers, after a put() or a remove(), whether the domain of the map has been modified.

storedComparator

protected Comparator<? super Integer> storedComparator

This map's comparator, as provided in the constructor.

actualComparator

protected transient IntComparator actualComparator

This map's actual comparator; it may differ from storedComparator because it is always a type-specific comparator, so it could be derived from the former by wrapping.

serialVersionUID

public static final long serialVersionUID

See Also:

Constant Field Values

Constructor Detail

Int2ObjectAVLTreeMap

public Int2ObjectAVLTreeMap()

Creates a new empty tree map.

Int2ObjectAVLTreeMap

public Int2ObjectAVLTreeMap(Comparator<? super Integer> c)

Creates a new empty tree map with the given comparator.

Parameters:

c - a (possibly type-specific) comparator.

Int2ObjectAVLTreeMap

public Int2ObjectAVLTreeMap(Map<? extends Integer,? extends V> m)

Creates a new tree map copying a given map.

Parameters:

m - a Map to be copied into the new tree map.

Int2ObjectAVLTreeMap

public Int2ObjectAVLTreeMap(SortedMap<Integer,V> m)

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

Parameters:

m - a SortedMap to be copied into the new tree map.

Int2ObjectAVLTreeMap

public Int2ObjectAVLTreeMap(Int2ObjectMap<? extends V> m)

Creates a new tree map copying a given map.

Parameters:

m - a type-specific map to be copied into the new tree map.

Int2ObjectAVLTreeMap

public Int2ObjectAVLTreeMap(Int2ObjectSortedMap<V> m)

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

Parameters:

m - a type-specific sorted map to be copied into the new tree map.

Int2ObjectAVLTreeMap

public Int2ObjectAVLTreeMap(int[] k,
                    V[] v,
                    Comparator<? super Integer> c)

Creates a new tree map using the elements of two parallel arrays and the given comparator.

Parameters:

k - the array of keys of the new tree map.

v - the array of corresponding values in the new tree map.

c - a (possibly type-specific) comparator.

Throws:

IllegalArgumentException - if k and v have different lengths.

Int2ObjectAVLTreeMap

public Int2ObjectAVLTreeMap(int[] k,
                    V[] v)

Creates a new tree map using the elements of two parallel arrays.

Parameters:

k - the array of keys of the new tree map.

v - the array of corresponding values in the new tree map.

Throws:

IllegalArgumentException - if k and v have different lengths.

Method Detail

put

public V put(int k,
    V v)

Description copied from interface: Int2ObjectFunction

Adds a pair to the map.

Specified by:

put in interface Int2ObjectFunction<V>

Overrides:

put in class AbstractInt2ObjectFunction<V>

Parameters:

k - the key.

v - the value.

Returns:

the old value, or the default return value if no value was present for the given key.

See Also:

Function.put(Object,Object)

remove

public V remove(int k)

Description copied from interface: Int2ObjectFunction

Removes the mapping with the given key.

Specified by:

remove in interface Int2ObjectFunction<V>

Overrides:

remove in class AbstractInt2ObjectFunction<V>

Returns:

the old value, or the default return value if no value was present for the given key.

See Also:

Function.remove(Object)

put

public V put(Integer ok,
    V ov)

Description copied from class: AbstractInt2ObjectFunction

Delegates to the corresponding type-specific method, taking care of returning null on a missing key.

This method must check whether the provided key is in the map using containsKey(). Thus, it probes the map twice. Implementors of subclasses should override it with a more efficient method.

Specified by:

put in interface Function<Integer,V>

Specified by:

put in interface Map<Integer,V>

Overrides:

put in class AbstractInt2ObjectFunction<V>

Parameters:

ok - the key.

ov - the value.

Returns:

the old value, or null if no value was present for the given key.

See Also:

Map.put(Object,Object)

remove

public V remove(Object ok)

Description copied from class: AbstractInt2ObjectFunction

Delegates to the corresponding type-specific method, taking care of returning null on a missing key.

This method must check whether the provided key is in the map using containsKey(). Thus, it probes the map twice. Implementors of subclasses should override it with a more efficient method.

Specified by:

remove in interface Function<Integer,V>

Specified by:

remove in interface Map<Integer,V>

Overrides:

remove in class AbstractInt2ObjectFunction<V>

Returns:

the old value, or null if no value was present for the given key.

See Also:

Map.remove(Object)

containsValue

public boolean containsValue(Object v)

Description copied from class: AbstractInt2ObjectMap

Checks whether the given value is contained in AbstractInt2ObjectMap.values().

Specified by:

containsValue in interface Map<Integer,V>

Overrides:

containsValue in class AbstractInt2ObjectMap<V>

clear

public void clear()

Description copied from interface: Function

Removes all associations from this function (optional operation).

Specified by:

clear in interface Function<Integer,V>

Specified by:

clear in interface Map<Integer,V>

Overrides:

clear in class AbstractInt2ObjectFunction<V>

See Also:

Map.clear()

containsKey

public boolean containsKey(int k)

Description copied from class: AbstractInt2ObjectMap

Checks whether the given value is contained in AbstractInt2ObjectMap.keySet().

Specified by:

containsKey in interface Int2ObjectFunction<V>

Overrides:

containsKey in class AbstractInt2ObjectMap<V>

See Also:

Function.containsKey(Object)

size

public int size()

Description copied from interface: Function

Returns the intended number of keys in this function, or -1 if no such number exists.

Most function implementations will have some knowledge of the intended number of keys in their domain. In some cases, however, this might not be possible.

Specified by:

size in interface Function<Integer,V>

Specified by:

size in interface Map<Integer,V>

Returns:

the intended number of keys in this function, or -1 if that number is not available.

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<Integer,V>

Overrides:

isEmpty in class AbstractInt2ObjectMap<V>

get

public V get(int k)

Description copied from interface: Int2ObjectFunction

Returns the value to which the given key is mapped.

Specified by:

get in interface Int2ObjectFunction<V>

Parameters:

k - the key.

Returns:

the corresponding value, or the default return value if no value was present for the given key.

See Also:

Function.get(Object)

firstIntKey

public int firstIntKey()

Specified by:

firstIntKey in interface Int2ObjectSortedMap<V>

See Also:

SortedMap.firstKey()

lastIntKey

public int lastIntKey()

Specified by:

lastIntKey in interface Int2ObjectSortedMap<V>

See Also:

SortedMap.lastKey()

int2ObjectEntrySet

public ObjectSortedSet<Int2ObjectMap.Entry<V>> int2ObjectEntrySet()

Description copied from interface: Int2ObjectSortedMap

Returns a type-specific sorted-set view of the mappings contained in this map. Note that this specification strengthens the one given in the corresponding type-specific unsorted map.

Specified by:

int2ObjectEntrySet in interface Int2ObjectMap<V>

Specified by:

int2ObjectEntrySet in interface Int2ObjectSortedMap<V>

Returns:

a type-specific sorted-set view of the mappings contained in this map.

See Also:

Int2ObjectSortedMap.entrySet()

keySet

public IntSortedSet keySet()

Returns a type-specific sorted set view of the keys contained in this map.

In addition to the semantics of Map.keySet(), you can safely cast the set returned by this call to a type-specific sorted set interface.

Specified by:

keySet in interface Int2ObjectMap<V>

Specified by:

keySet in interface Int2ObjectSortedMap<V>

Specified by:

keySet in interface Map<Integer,V>

Specified by:

keySet in interface SortedMap<Integer,V>

Overrides:

keySet in class AbstractInt2ObjectSortedMap<V>

Returns:

a type-specific sorted set view of the keys contained in this map.

See Also:

Map.keySet()

values

public ObjectCollection<V> values()

Returns a type-specific collection view of the values contained in this map.

In addition to the semantics of Map.values(), you can safely cast the collection returned by this call to a type-specific collection interface.

Specified by:

values in interface Int2ObjectMap<V>

Specified by:

values in interface Int2ObjectSortedMap<V>

Specified by:

values in interface Map<Integer,V>

Specified by:

values in interface SortedMap<Integer,V>

Overrides:

values in class AbstractInt2ObjectSortedMap<V>

Returns:

a type-specific collection view of the values contained in this map.

See Also:

Map.values()

comparator

public IntComparator comparator()

Description copied from interface: Int2ObjectSortedMap

Returns the comparator associated with this sorted set, or null if it uses its keys' natural ordering.

Note that this specification strengthens the one given in SortedMap.comparator().

Specified by:

comparator in interface Int2ObjectSortedMap<V>

Specified by:

comparator in interface SortedMap<Integer,V>

See Also:

SortedMap.comparator()

headMap

public Int2ObjectSortedMap<V> headMap(int to)

Description copied from interface: Int2ObjectSortedMap

Returns a view of the portion of this sorted map whose keys are strictly less than toKey.

Specified by:

headMap in interface Int2ObjectSortedMap<V>

See Also:

SortedMap.headMap(Object)

tailMap

public Int2ObjectSortedMap<V> tailMap(int from)

Description copied from interface: Int2ObjectSortedMap

Returns a view of the portion of this sorted map whose keys are greater than or equal to fromKey.

Specified by:

tailMap in interface Int2ObjectSortedMap<V>

See Also:

SortedMap.tailMap(Object)

subMap

public Int2ObjectSortedMap<V> subMap(int from,
                            int to)

Description copied from interface: Int2ObjectSortedMap

Returns a view of the portion of this sorted map whose keys range from fromKey, inclusive, to toKey, exclusive.

Specified by:

subMap in interface Int2ObjectSortedMap<V>

See Also:

SortedMap.subMap(Object,Object)

clone

public Int2ObjectAVLTreeMap<V> clone()

Returns a deep copy of this tree map.

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

Overrides:

clone in class Object

Returns:

a deep copy of this tree map.