it.unimi.dsi.fastutil.bytes
Class Byte2LongAVLTreeMap

java.lang.Object
  it.unimi.dsi.fastutil.bytes.AbstractByte2LongFunction
      it.unimi.dsi.fastutil.bytes.AbstractByte2LongMap
          it.unimi.dsi.fastutil.bytes.AbstractByte2LongSortedMap
              it.unimi.dsi.fastutil.bytes.Byte2LongAVLTreeMap

All Implemented Interfaces:

Byte2LongFunction, Byte2LongMap, Byte2LongSortedMap, Function<Byte,Long>, Serializable, Cloneable, Map<Byte,Long>, SortedMap<Byte,Long>

public class Byte2LongAVLTreeMap
extends AbstractByte2LongSortedMap
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.bytes.AbstractByte2LongMap

AbstractByte2LongMap.BasicEntry

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.bytes.Byte2LongSortedMap

Byte2LongSortedMap.FastSortedEntrySet

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.bytes.Byte2LongMap

Byte2LongMap.FastEntrySet

Field Summary

static long

serialVersionUID

Constructor Summary

Byte2LongAVLTreeMap()
Creates a new empty tree map.

Byte2LongAVLTreeMap(byte[] k, long[] v)
Creates a new tree map using the elements of two parallel arrays.

Byte2LongAVLTreeMap(byte[] k, long[] v, Comparator<? super Byte> c)
Creates a new tree map using the elements of two parallel arrays and the given comparator.

Byte2LongAVLTreeMap(Byte2LongMap m)
Creates a new tree map copying a given map.

Byte2LongAVLTreeMap(Byte2LongSortedMap m)
Creates a new tree map copying a given sorted map (and its Comparator).

Byte2LongAVLTreeMap(Comparator<? super Byte> c)
Creates a new empty tree map with the given comparator.

Byte2LongAVLTreeMap(Map<? extends Byte,? extends Long> m)
Creates a new tree map copying a given map.

Byte2LongAVLTreeMap(SortedMap<Byte,Long> m)
Creates a new tree map copying a given sorted map (and its Comparator).

Method Summary

ObjectSortedSet<Byte2LongMap.Entry>	byte2LongEntrySet() Returns a type-specific set view of the mappings contained in this map.
void	clear() Removes all associations from this function (optional operation).
Object	clone() Returns a deep copy of this tree map.
ByteComparator	comparator() Returns the comparator associated with this sorted set, or null if it uses its keys' natural ordering.
boolean	containsKey(byte k) Checks whether the given value is contained in AbstractByte2LongMap.keySet().
boolean	containsValue(long v) Checks whether the given value is contained in AbstractByte2LongMap.values().
byte	firstByteKey()
long	get(byte k) Returns the value to which the given key is mapped.
Byte2LongSortedMap	headMap(byte to) Returns a view of the portion of this sorted map whose keys are strictly less than toKey.
boolean	isEmpty()
ByteSortedSet	keySet() Returns a type-specific sorted set view of the keys contained in this map.
byte	lastByteKey()
long	put(byte k, long v) Adds a pair to the map.
Long	put(Byte ok, Long ov) Delegates to the corresponding type-specific method, taking care of returning null on a missing key.
long	remove(byte k) Removes the mapping with the given key.
Long	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.
Byte2LongSortedMap	subMap(byte from, byte to) Returns a view of the portion of this sorted map whose keys range from fromKey, inclusive, to toKey, exclusive.
Byte2LongSortedMap	tailMap(byte from) Returns a view of the portion of this sorted map whose keys are greater than or equal to fromKey.
LongCollection	values() Returns a type-specific collection view of the values contained in this map.

Methods inherited from class it.unimi.dsi.fastutil.bytes.AbstractByte2LongSortedMap

entrySet, firstKey, headMap, lastKey, subMap, tailMap

Methods inherited from class it.unimi.dsi.fastutil.bytes.AbstractByte2LongMap

containsValue, equals, hashCode, putAll, toString

Methods inherited from class it.unimi.dsi.fastutil.bytes.AbstractByte2LongFunction

containsKey, defaultReturnValue, defaultReturnValue, get

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface it.unimi.dsi.fastutil.bytes.Byte2LongFunction

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

Methods inherited from interface java.util.Map

containsKey, containsValue, equals, get, hashCode, putAll

Field Detail

serialVersionUID

public static final long serialVersionUID

See Also:

Constant Field Values

Constructor Detail

Byte2LongAVLTreeMap

public Byte2LongAVLTreeMap()

Creates a new empty tree map.

Byte2LongAVLTreeMap

public Byte2LongAVLTreeMap(Comparator<? super Byte> c)

Creates a new empty tree map with the given comparator.

Parameters:

c - a (possibly type-specific) comparator.

Byte2LongAVLTreeMap

public Byte2LongAVLTreeMap(Map<? extends Byte,? extends Long> m)

Creates a new tree map copying a given map.

Parameters:

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

Byte2LongAVLTreeMap

public Byte2LongAVLTreeMap(SortedMap<Byte,Long> 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.

Byte2LongAVLTreeMap

public Byte2LongAVLTreeMap(Byte2LongMap m)

Creates a new tree map copying a given map.

Parameters:

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

Byte2LongAVLTreeMap

public Byte2LongAVLTreeMap(Byte2LongSortedMap 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.

Byte2LongAVLTreeMap

public Byte2LongAVLTreeMap(byte[] k,
                           long[] v,
                           Comparator<? super Byte> 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.

Byte2LongAVLTreeMap

public Byte2LongAVLTreeMap(byte[] k,
                           long[] 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 long put(byte k,
                long v)

Description copied from interface: Byte2LongFunction

Adds a pair to the map.

Specified by:

put in interface Byte2LongFunction

Overrides:

put in class AbstractByte2LongFunction

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 long remove(byte k)

Description copied from interface: Byte2LongFunction

Removes the mapping with the given key.

Specified by:

remove in interface Byte2LongFunction

Overrides:

remove in class AbstractByte2LongFunction

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 Long put(Byte ok,
                Long ov)

Description copied from class: AbstractByte2LongFunction

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<Byte,Long>

Specified by:

put in interface Map<Byte,Long>

Overrides:

put in class AbstractByte2LongFunction

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 Long remove(Object ok)

Description copied from class: AbstractByte2LongFunction

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<Byte,Long>

Specified by:

remove in interface Map<Byte,Long>

Overrides:

remove in class AbstractByte2LongFunction

Returns:

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

See Also:

Map.remove(Object)

containsValue

public boolean containsValue(long v)

Description copied from class: AbstractByte2LongMap

Checks whether the given value is contained in AbstractByte2LongMap.values().

Specified by:

containsValue in interface Byte2LongMap

Overrides:

containsValue in class AbstractByte2LongMap

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<Byte,Long>

Specified by:

clear in interface Map<Byte,Long>

Overrides:

clear in class AbstractByte2LongFunction

See Also:

Map.clear()

containsKey

public boolean containsKey(byte k)

Description copied from class: AbstractByte2LongMap

Checks whether the given value is contained in AbstractByte2LongMap.keySet().

Specified by:

containsKey in interface Byte2LongFunction

Overrides:

containsKey in class AbstractByte2LongMap

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<Byte,Long>

Specified by:

size in interface Map<Byte,Long>

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<Byte,Long>

Overrides:

isEmpty in class AbstractByte2LongMap

get

public long get(byte k)

Description copied from interface: Byte2LongFunction

Returns the value to which the given key is mapped.

Specified by:

get in interface Byte2LongFunction

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)

firstByteKey

public byte firstByteKey()

Specified by:

firstByteKey in interface Byte2LongSortedMap

See Also:

SortedMap.firstKey()

lastByteKey

public byte lastByteKey()

Specified by:

lastByteKey in interface Byte2LongSortedMap

See Also:

SortedMap.lastKey()

byte2LongEntrySet

public ObjectSortedSet<Byte2LongMap.Entry> byte2LongEntrySet()

Description copied from interface: Byte2LongMap

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

This method is necessary because there is no inheritance along type parameters: it is thus impossible to strengthen Byte2LongMap.entrySet() so that it returns an ObjectSet of objects of type Byte2LongMap.Entry (the latter makes it possible to access keys and values with type-specific methods).

Specified by:

byte2LongEntrySet in interface Byte2LongMap

Specified by:

byte2LongEntrySet in interface Byte2LongSortedMap

Returns:

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

See Also:

Byte2LongMap.entrySet()

keySet

public ByteSortedSet 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 Byte2LongMap

Specified by:

keySet in interface Byte2LongSortedMap

Specified by:

keySet in interface Map<Byte,Long>

Overrides:

keySet in class AbstractByte2LongSortedMap

Returns:

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

See Also:

Map.keySet()

values

public LongCollection 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 Byte2LongMap

Specified by:

values in interface Byte2LongSortedMap

Specified by:

values in interface Map<Byte,Long>

Overrides:

values in class AbstractByte2LongSortedMap

Returns:

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

See Also:

Map.values()

comparator

public ByteComparator comparator()

Description copied from interface: Byte2LongSortedMap

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 Byte2LongSortedMap

Specified by:

comparator in interface SortedMap<Byte,Long>

See Also:

SortedMap.comparator()

headMap

public Byte2LongSortedMap headMap(byte to)

Description copied from interface: Byte2LongSortedMap

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

Specified by:

headMap in interface Byte2LongSortedMap

See Also:

SortedMap.headMap(Object)

tailMap

public Byte2LongSortedMap tailMap(byte from)

Description copied from interface: Byte2LongSortedMap

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

Specified by:

tailMap in interface Byte2LongSortedMap

See Also:

SortedMap.tailMap(Object)

subMap

public Byte2LongSortedMap subMap(byte from,
                                 byte to)

Description copied from interface: Byte2LongSortedMap

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

Specified by:

subMap in interface Byte2LongSortedMap

See Also:

SortedMap.subMap(Object,Object)

clone

public Object 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.