it.unimi.dsi.fastutil.shorts

Class Short2ShortAVLTreeMap

java.lang.Object

it.unimi.dsi.fastutil.shorts.AbstractShort2ShortFunction

it.unimi.dsi.fastutil.shorts.AbstractShort2ShortMap

it.unimi.dsi.fastutil.shorts.AbstractShort2ShortSortedMap

it.unimi.dsi.fastutil.shorts.Short2ShortAVLTreeMap

All Implemented Interfaces:

Function<Short,Short>, Short2ShortFunction, Short2ShortMap, Short2ShortSortedMap, Serializable, Cloneable, Map<Short,Short>, SortedMap<Short,Short>

public class Short2ShortAVLTreeMap
extends AbstractShort2ShortSortedMap
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.shorts.AbstractShort2ShortSortedMap

AbstractShort2ShortSortedMap.KeySetIterator, AbstractShort2ShortSortedMap.ValuesCollection, AbstractShort2ShortSortedMap.ValuesIterator

Nested classes/interfaces inherited from class it.unimi.dsi.fastutil.shorts.AbstractShort2ShortMap

AbstractShort2ShortMap.BasicEntry

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.shorts.Short2ShortSortedMap

Short2ShortSortedMap.FastSortedEntrySet

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.shorts.Short2ShortMap

Short2ShortMap.FastEntrySet

Field Summary

Fields

Modifier and Type	Field and Description
protected ShortComparator	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<Short2ShortMap.Entry>	entries Cached set of entries.
protected it.unimi.dsi.fastutil.shorts.Short2ShortAVLTreeMap.Entry	firstEntry The first key in this map.
protected ShortSortedSet	keys Cached set of keys.
protected it.unimi.dsi.fastutil.shorts.Short2ShortAVLTreeMap.Entry	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 Short>	storedComparator This map's comparator, as provided in the constructor.
protected it.unimi.dsi.fastutil.shorts.Short2ShortAVLTreeMap.Entry	tree A reference to the root entry.
protected ShortCollection	values Cached collection of values.

Fields inherited from class it.unimi.dsi.fastutil.shorts.AbstractShort2ShortFunction

defRetValue

Constructor Summary

Constructors

Constructor and Description
Short2ShortAVLTreeMap() Creates a new empty tree map.
Short2ShortAVLTreeMap(Comparator<? super Short> c) Creates a new empty tree map with the given comparator.
Short2ShortAVLTreeMap(Map<? extends Short,? extends Short> m) Creates a new tree map copying a given map.
Short2ShortAVLTreeMap(short[] k, short[] v) Creates a new tree map using the elements of two parallel arrays.
Short2ShortAVLTreeMap(short[] k, short[] v, Comparator<? super Short> c) Creates a new tree map using the elements of two parallel arrays and the given comparator.
Short2ShortAVLTreeMap(Short2ShortMap m) Creates a new tree map copying a given map.
Short2ShortAVLTreeMap(Short2ShortSortedMap m) Creates a new tree map copying a given sorted map (and its Comparator).
Short2ShortAVLTreeMap(SortedMap<Short,Short> 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).
Short2ShortAVLTreeMap	clone() Returns a deep copy of this tree map.
ShortComparator	comparator() Returns the comparator associated with this sorted set, or null if it uses its keys' natural ordering.
boolean	containsKey(short k) Checks whether the given value is contained in AbstractShort2ShortMap.keySet().
boolean	containsValue(short v) Checks whether the given value is contained in AbstractShort2ShortMap.values().
short	firstShortKey()
short	get(short k) Returns the value to which the given key is mapped.
Short2ShortSortedMap	headMap(short to) Returns a view of the portion of this sorted map whose keys are strictly less than toKey.
boolean	isEmpty()
ShortSortedSet	keySet() Returns a type-specific sorted set view of the keys contained in this map.
short	lastShortKey()
short	put(short k, short v) Adds a pair to the map.
Short	put(Short ok, Short ov) Delegates to the corresponding type-specific method, taking care of returning null on a missing key.
Short	remove(Object ok) Delegates to the corresponding type-specific method, taking care of returning null on a missing key.
short	remove(short k) Removes the mapping with the given key.
ObjectSortedSet<Short2ShortMap.Entry>	short2ShortEntrySet() Returns a type-specific sorted-set view of the mappings contained in this map.
int	size() Returns the intended number of keys in this function, or -1 if no such number exists.
Short2ShortSortedMap	subMap(short from, short to) Returns a view of the portion of this sorted map whose keys range from fromKey, inclusive, to toKey, exclusive.
Short2ShortSortedMap	tailMap(short from) Returns a view of the portion of this sorted map whose keys are greater than or equal to fromKey.
ShortCollection	values() Returns a type-specific collection view of the values contained in this map.

Methods inherited from class it.unimi.dsi.fastutil.shorts.AbstractShort2ShortSortedMap

entrySet, firstKey, headMap, lastKey, subMap, tailMap

Methods inherited from class it.unimi.dsi.fastutil.shorts.AbstractShort2ShortMap

containsValue, equals, hashCode, putAll, toString

Methods inherited from class it.unimi.dsi.fastutil.shorts.AbstractShort2ShortFunction

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.shorts.Short2ShortFunction

defaultReturnValue, defaultReturnValue

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

containsKey, get

Methods inherited from interface java.util.Map

containsKey, containsValue, equals, get, hashCode, putAll

Field Detail

tree

protected transient it.unimi.dsi.fastutil.shorts.Short2ShortAVLTreeMap.Entry tree

A reference to the root entry.

count

protected int count

Number of entries in this map.

firstEntry

protected transient it.unimi.dsi.fastutil.shorts.Short2ShortAVLTreeMap.Entry firstEntry

The first key in this map.

lastEntry

protected transient it.unimi.dsi.fastutil.shorts.Short2ShortAVLTreeMap.Entry lastEntry

The last key in this map.

entries

protected transient volatile ObjectSortedSet<Short2ShortMap.Entry> entries

Cached set of entries.

keys

protected transient volatile ShortSortedSet keys

Cached set of keys.

values

protected transient volatile ShortCollection 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 Short> storedComparator

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

actualComparator

protected transient ShortComparator 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

Short2ShortAVLTreeMap

public Short2ShortAVLTreeMap()

Creates a new empty tree map.

Short2ShortAVLTreeMap

public Short2ShortAVLTreeMap(Comparator<? super Short> c)

Creates a new empty tree map with the given comparator.

Parameters:

c - a (possibly type-specific) comparator.

Short2ShortAVLTreeMap

public Short2ShortAVLTreeMap(Map<? extends Short,? extends Short> m)

Creates a new tree map copying a given map.

Parameters:

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

Short2ShortAVLTreeMap

public Short2ShortAVLTreeMap(SortedMap<Short,Short> 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.

Short2ShortAVLTreeMap

public Short2ShortAVLTreeMap(Short2ShortMap m)

Creates a new tree map copying a given map.

Parameters:

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

Short2ShortAVLTreeMap

public Short2ShortAVLTreeMap(Short2ShortSortedMap 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.

Short2ShortAVLTreeMap

public Short2ShortAVLTreeMap(short[] k,
                     short[] v,
                     Comparator<? super Short> 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.

Short2ShortAVLTreeMap

public Short2ShortAVLTreeMap(short[] k,
                     short[] 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 short put(short k,
        short v)

Description copied from interface: Short2ShortFunction

Adds a pair to the map.

Specified by:

put in interface Short2ShortFunction

Overrides:

put in class AbstractShort2ShortFunction

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 short remove(short k)

Description copied from interface: Short2ShortFunction

Removes the mapping with the given key.

Specified by:

remove in interface Short2ShortFunction

Overrides:

remove in class AbstractShort2ShortFunction

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 Short put(Short ok,
        Short ov)

Description copied from class: AbstractShort2ShortFunction

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<Short,Short>

Specified by:

put in interface Map<Short,Short>

Overrides:

put in class AbstractShort2ShortFunction

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 Short remove(Object ok)

Description copied from class: AbstractShort2ShortFunction

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<Short,Short>

Specified by:

remove in interface Map<Short,Short>

Overrides:

remove in class AbstractShort2ShortFunction

Returns:

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

See Also:

Map.remove(Object)

containsValue

public boolean containsValue(short v)

Description copied from class: AbstractShort2ShortMap

Checks whether the given value is contained in AbstractShort2ShortMap.values().

Specified by:

containsValue in interface Short2ShortMap

Overrides:

containsValue in class AbstractShort2ShortMap

See Also:

Map.containsValue(Object)

clear

public void clear()

Description copied from interface: Function

Removes all associations from this function (optional operation).

Specified by:

clear in interface Function<Short,Short>

Specified by:

clear in interface Map<Short,Short>

Overrides:

clear in class AbstractShort2ShortFunction

See Also:

Map.clear()

containsKey

public boolean containsKey(short k)

Description copied from class: AbstractShort2ShortMap

Checks whether the given value is contained in AbstractShort2ShortMap.keySet().

Specified by:

containsKey in interface Short2ShortFunction

Overrides:

containsKey in class AbstractShort2ShortMap

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<Short,Short>

Specified by:

size in interface Map<Short,Short>

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<Short,Short>

Overrides:

isEmpty in class AbstractShort2ShortMap

get

public short get(short k)

Description copied from interface: Short2ShortFunction

Returns the value to which the given key is mapped.

Specified by:

get in interface Short2ShortFunction

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)

firstShortKey

public short firstShortKey()

Specified by:

firstShortKey in interface Short2ShortSortedMap

See Also:

SortedMap.firstKey()

lastShortKey

public short lastShortKey()

Specified by:

lastShortKey in interface Short2ShortSortedMap

See Also:

SortedMap.lastKey()

short2ShortEntrySet

public ObjectSortedSet<Short2ShortMap.Entry> short2ShortEntrySet()

Description copied from interface: Short2ShortSortedMap

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:

short2ShortEntrySet in interface Short2ShortMap

Specified by:

short2ShortEntrySet in interface Short2ShortSortedMap

Returns:

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

See Also:

Short2ShortSortedMap.entrySet()

keySet

public ShortSortedSet 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 Short2ShortMap

Specified by:

keySet in interface Short2ShortSortedMap

Specified by:

keySet in interface Map<Short,Short>

Specified by:

keySet in interface SortedMap<Short,Short>

Overrides:

keySet in class AbstractShort2ShortSortedMap

Returns:

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

See Also:

Map.keySet()

values

public ShortCollection 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 Short2ShortMap

Specified by:

values in interface Short2ShortSortedMap

Specified by:

values in interface Map<Short,Short>

Specified by:

values in interface SortedMap<Short,Short>

Overrides:

values in class AbstractShort2ShortSortedMap

Returns:

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

See Also:

Map.values()

comparator

public ShortComparator comparator()

Description copied from interface: Short2ShortSortedMap

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 Short2ShortSortedMap

Specified by:

comparator in interface SortedMap<Short,Short>

See Also:

SortedMap.comparator()

headMap

public Short2ShortSortedMap headMap(short to)

Description copied from interface: Short2ShortSortedMap

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

Specified by:

headMap in interface Short2ShortSortedMap

See Also:

SortedMap.headMap(Object)

tailMap

public Short2ShortSortedMap tailMap(short from)

Description copied from interface: Short2ShortSortedMap

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

Specified by:

tailMap in interface Short2ShortSortedMap

See Also:

SortedMap.tailMap(Object)

subMap

public Short2ShortSortedMap subMap(short from,
                          short to)

Description copied from interface: Short2ShortSortedMap

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

Specified by:

subMap in interface Short2ShortSortedMap

See Also:

SortedMap.subMap(Object,Object)

clone

public Short2ShortAVLTreeMap 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.