it.unimi.dsi.fastutil.chars

Class Char2ByteAVLTreeMap

java.lang.Object

it.unimi.dsi.fastutil.chars.AbstractChar2ByteFunction

it.unimi.dsi.fastutil.chars.AbstractChar2ByteMap

it.unimi.dsi.fastutil.chars.AbstractChar2ByteSortedMap

it.unimi.dsi.fastutil.chars.Char2ByteAVLTreeMap

All Implemented Interfaces:

Char2ByteFunction, Char2ByteMap, Char2ByteSortedMap, Serializable, Cloneable, Function<Character,Byte>, IntUnaryOperator, Map<Character,Byte>, SortedMap<Character,Byte>

public class Char2ByteAVLTreeMap
extends AbstractChar2ByteSortedMap
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.chars.AbstractChar2ByteSortedMap

AbstractChar2ByteSortedMap.KeySetIterator, AbstractChar2ByteSortedMap.ValuesCollection, AbstractChar2ByteSortedMap.ValuesIterator

Nested classes/interfaces inherited from class it.unimi.dsi.fastutil.chars.AbstractChar2ByteMap

AbstractChar2ByteMap.BasicEntry, AbstractChar2ByteMap.BasicEntrySet

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.chars.Char2ByteSortedMap

Char2ByteSortedMap.FastSortedEntrySet

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.chars.Char2ByteMap

Char2ByteMap.FastEntrySet

Field Summary

Fields

Modifier and Type	Field and Description
protected CharComparator	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<Char2ByteMap.Entry>	entries Cached set of entries.
protected it.unimi.dsi.fastutil.chars.Char2ByteAVLTreeMap.Entry	firstEntry The first key in this map.
protected CharSortedSet	keys Cached set of keys.
protected it.unimi.dsi.fastutil.chars.Char2ByteAVLTreeMap.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.
protected Comparator<? super Character>	storedComparator This map's comparator, as provided in the constructor.
protected it.unimi.dsi.fastutil.chars.Char2ByteAVLTreeMap.Entry	tree A reference to the root entry.
protected ByteCollection	values Cached collection of values.

Fields inherited from class it.unimi.dsi.fastutil.chars.AbstractChar2ByteFunction

defRetValue

Constructor Summary

Constructors

Constructor and Description
Char2ByteAVLTreeMap() Creates a new empty tree map.
Char2ByteAVLTreeMap(char[] k, byte[] v) Creates a new tree map using the elements of two parallel arrays.
Char2ByteAVLTreeMap(char[] k, byte[] v, Comparator<? super Character> c) Creates a new tree map using the elements of two parallel arrays and the given comparator.
Char2ByteAVLTreeMap(Char2ByteMap m) Creates a new tree map copying a given map.
Char2ByteAVLTreeMap(Char2ByteSortedMap m) Creates a new tree map copying a given sorted map (and its Comparator).
Char2ByteAVLTreeMap(Comparator<? super Character> c) Creates a new empty tree map with the given comparator.
Char2ByteAVLTreeMap(Map<? extends Character,? extends Byte> m) Creates a new tree map copying a given map.
Char2ByteAVLTreeMap(SortedMap<Character,Byte> m) Creates a new tree map copying a given sorted map (and its Comparator).

Method Summary

Modifier and Type	Method and Description
byte	addTo(char k, byte incr) Adds an increment to value currently associated with a key.
ObjectSortedSet<Char2ByteMap.Entry>	char2ByteEntrySet() Returns a type-specific sorted-set view of the mappings contained in this map.
void	clear() Removes all of the mappings from this map (optional operation).
Char2ByteAVLTreeMap	clone() Returns a deep copy of this tree map.
CharComparator	comparator() Returns the comparator associated with this sorted set, or null if it uses its keys' natural ordering.
boolean	containsKey(char k) Returns true if this function contains a mapping for the specified key.
boolean	containsValue(byte v) Returns true if this map maps one or more keys to the specified value.
char	firstCharKey() Returns the first (lowest) key currently in this map.
byte	get(char k) Returns the value to which the given key is mapped.
Char2ByteSortedMap	headMap(char to) Returns a view of the portion of this sorted map whose keys are strictly less than toKey.
boolean	isEmpty()
CharSortedSet	keySet() Returns a type-specific sorted set view of the keys contained in this map.
char	lastCharKey() Returns the last (highest) key currently in this map.
byte	put(char k, byte v) Adds a pair to the map (optional operation).
byte	remove(char k) Removes the mapping with the given key (optional operation).
int	size() Returns the number of key/value mappings in this map.
Char2ByteSortedMap	subMap(char from, char to) Returns a view of the portion of this sorted map whose keys range from fromKey, inclusive, to toKey, exclusive.
Char2ByteSortedMap	tailMap(char from) Returns a view of the portion of this sorted map whose keys are greater than or equal to fromKey.
ByteCollection	values() Returns a type-specific collection view of the values contained in this map.

Methods inherited from class it.unimi.dsi.fastutil.chars.AbstractChar2ByteMap

equals, hashCode, putAll, toString

Methods inherited from class it.unimi.dsi.fastutil.chars.AbstractChar2ByteFunction

defaultReturnValue, defaultReturnValue

Methods inherited from class java.lang.Object

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

Methods inherited from interface it.unimi.dsi.fastutil.chars.Char2ByteSortedMap

entrySet, firstKey, headMap, lastKey, subMap, tailMap

Methods inherited from interface it.unimi.dsi.fastutil.chars.Char2ByteMap

compute, compute, computeIfAbsent, computeIfAbsent, computeIfAbsentNullable, computeIfAbsentPartial, computeIfPresent, computeIfPresent, containsKey, containsValue, defaultReturnValue, defaultReturnValue, get, getOrDefault, getOrDefault, merge, merge, put, putIfAbsent, putIfAbsent, remove, remove, remove, replace, replace, replace, replace

Methods inherited from interface it.unimi.dsi.fastutil.chars.Char2ByteFunction

applyAsInt

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

apply

Methods inherited from interface java.util.function.Function

andThen, compose, identity

Methods inherited from interface java.util.function.IntUnaryOperator

andThen, compose, identity

Methods inherited from interface java.util.Map

equals, forEach, hashCode, putAll, replaceAll

Field Detail

tree

protected transient it.unimi.dsi.fastutil.chars.Char2ByteAVLTreeMap.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.chars.Char2ByteAVLTreeMap.Entry firstEntry

The first key in this map.

lastEntry

protected transient it.unimi.dsi.fastutil.chars.Char2ByteAVLTreeMap.Entry lastEntry

The last key in this map.

entries

protected transient ObjectSortedSet<Char2ByteMap.Entry> entries

Cached set of entries.

keys

protected transient CharSortedSet keys

Cached set of keys.

values

protected transient ByteCollection 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 Character> storedComparator

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

actualComparator

protected transient CharComparator 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.

Constructor Detail

Char2ByteAVLTreeMap

public Char2ByteAVLTreeMap()

Creates a new empty tree map.

Char2ByteAVLTreeMap

public Char2ByteAVLTreeMap(Comparator<? super Character> c)

Creates a new empty tree map with the given comparator.

Parameters:

c - a (possibly type-specific) comparator.

Char2ByteAVLTreeMap

public Char2ByteAVLTreeMap(Map<? extends Character,? extends Byte> m)

Creates a new tree map copying a given map.

Parameters:

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

Char2ByteAVLTreeMap

public Char2ByteAVLTreeMap(SortedMap<Character,Byte> 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.

Char2ByteAVLTreeMap

public Char2ByteAVLTreeMap(Char2ByteMap m)

Creates a new tree map copying a given map.

Parameters:

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

Char2ByteAVLTreeMap

public Char2ByteAVLTreeMap(Char2ByteSortedMap 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.

Char2ByteAVLTreeMap

public Char2ByteAVLTreeMap(char[] k,
                           byte[] v,
                           Comparator<? super Character> 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.

Char2ByteAVLTreeMap

public Char2ByteAVLTreeMap(char[] k,
                           byte[] 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

addTo

public byte addTo(char k,
                  byte incr)

Adds an increment to value currently associated with a key.

Note that this method respects the default return value semantics: when called with a key that does not currently appears in the map, the key will be associated with the default return value plus the given increment.

Parameters:

k - the key.

incr - the increment.

Returns:

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

put

public byte put(char k,
                byte v)

Description copied from interface: Char2ByteFunction

Adds a pair to the map (optional operation).

Specified by:

put in interface Char2ByteFunction

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 byte remove(char k)

Description copied from interface: Char2ByteFunction

Removes the mapping with the given key (optional operation).

Specified by:

remove in interface Char2ByteFunction

Parameters:

k - the key.

Returns:

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

See Also:

Function.remove(Object)

containsValue

public boolean containsValue(byte v)

Description copied from interface: Char2ByteMap

Returns true if this map maps one or more keys to the specified value.

Specified by:

containsValue in interface Char2ByteMap

Overrides:

containsValue in class AbstractChar2ByteMap

See Also:

Map.containsValue(Object)

clear

public void clear()

Description copied from interface: Char2ByteMap

Removes all of the mappings from this map (optional operation). The map will be empty after this call returns.

Specified by:

clear in interface Char2ByteMap

Specified by:

clear in interface Map<Character,Byte>

See Also:

Map.clear()

containsKey

public boolean containsKey(char k)

Description copied from interface: Char2ByteMap

Returns true if this function contains a mapping for the specified key.

Specified by:

containsKey in interface Char2ByteFunction

Specified by:

containsKey in interface Char2ByteMap

Overrides:

containsKey in class AbstractChar2ByteMap

Parameters:

k - the key.

Returns:

true if this function associates a value to key.

See Also:

Map.containsKey(Object)

size

public int size()

Description copied from interface: Char2ByteMap

Returns the number of key/value mappings in this map. If the map contains more than Integer.MAX_VALUE elements, returns Integer.MAX_VALUE.

Specified by:

size in interface Char2ByteMap

Specified by:

size in interface Map<Character,Byte>

Returns:

the number of key-value mappings in this map.

See Also:

Size64

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<Character,Byte>

Overrides:

isEmpty in class AbstractChar2ByteMap

get

public byte get(char k)

Description copied from interface: Char2ByteFunction

Returns the value to which the given key is mapped.

Specified by:

get in interface Char2ByteFunction

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)

firstCharKey

public char firstCharKey()

Description copied from interface: Char2ByteSortedMap

Returns the first (lowest) key currently in this map.

Specified by:

firstCharKey in interface Char2ByteSortedMap

See Also:

SortedMap.firstKey()

lastCharKey

public char lastCharKey()

Description copied from interface: Char2ByteSortedMap

Returns the last (highest) key currently in this map.

Specified by:

lastCharKey in interface Char2ByteSortedMap

See Also:

SortedMap.lastKey()

char2ByteEntrySet

public ObjectSortedSet<Char2ByteMap.Entry> char2ByteEntrySet()

Description copied from interface: Char2ByteSortedMap

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:

char2ByteEntrySet in interface Char2ByteMap

Specified by:

char2ByteEntrySet in interface Char2ByteSortedMap

Returns:

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

See Also:

Char2ByteSortedMap.entrySet()

keySet

public CharSortedSet 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 Char2ByteMap

Specified by:

keySet in interface Char2ByteSortedMap

Specified by:

keySet in interface Map<Character,Byte>

Specified by:

keySet in interface SortedMap<Character,Byte>

Overrides:

keySet in class AbstractChar2ByteSortedMap

Returns:

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

See Also:

Map.keySet()

values

public ByteCollection 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 Char2ByteMap

Specified by:

values in interface Char2ByteSortedMap

Specified by:

values in interface Map<Character,Byte>

Specified by:

values in interface SortedMap<Character,Byte>

Overrides:

values in class AbstractChar2ByteSortedMap

Returns:

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

See Also:

Map.values()

comparator

public CharComparator comparator()

Description copied from interface: Char2ByteSortedMap

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 Char2ByteSortedMap

Specified by:

comparator in interface SortedMap<Character,Byte>

See Also:

SortedMap.comparator()

headMap

public Char2ByteSortedMap headMap(char to)

Description copied from interface: Char2ByteSortedMap

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

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

Specified by:

headMap in interface Char2ByteSortedMap

See Also:

SortedMap.headMap(Object)

tailMap

public Char2ByteSortedMap tailMap(char from)

Description copied from interface: Char2ByteSortedMap

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

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

Specified by:

tailMap in interface Char2ByteSortedMap

See Also:

SortedMap.tailMap(Object)

subMap

public Char2ByteSortedMap subMap(char from,
                                 char to)

Description copied from interface: Char2ByteSortedMap

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

Note that this specification strengthens the one given in SortedMap.subMap(Object,Object).

Specified by:

subMap in interface Char2ByteSortedMap

See Also:

SortedMap.subMap(Object,Object)

clone

public Char2ByteAVLTreeMap 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.