it.unimi.dsi.fastutil.longs
Class Long2IntRBTreeMap

java.lang.Object
  it.unimi.dsi.fastutil.longs.AbstractLong2IntFunction
      it.unimi.dsi.fastutil.longs.AbstractLong2IntMap
          it.unimi.dsi.fastutil.longs.AbstractLong2IntSortedMap
              it.unimi.dsi.fastutil.longs.Long2IntRBTreeMap

All Implemented Interfaces:

Function<Long,Integer>, Long2IntFunction, Long2IntMap, Long2IntSortedMap, Serializable, Cloneable, Map<Long,Integer>, SortedMap<Long,Integer>

public class Long2IntRBTreeMap
extends AbstractLong2IntSortedMap
implements Serializable, Cloneable

A type-specific red-black 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.longs.AbstractLong2IntMap

AbstractLong2IntMap.BasicEntry

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.longs.Long2IntSortedMap

Long2IntSortedMap.FastSortedEntrySet

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.longs.Long2IntMap

Long2IntMap.FastEntrySet

Field Summary

static long

serialVersionUID

Constructor Summary

Long2IntRBTreeMap()
Creates a new empty tree map.

Long2IntRBTreeMap(Comparator<? super Long> c)
Creates a new empty tree map with the given comparator.

Long2IntRBTreeMap(long[] k, int[] v)
Creates a new tree map using the elements of two parallel arrays.

Long2IntRBTreeMap(long[] k, int[] v, Comparator<? super Long> c)
Creates a new tree map using the elements of two parallel arrays and the given comparator.

Long2IntRBTreeMap(Long2IntMap m)
Creates a new tree map copying a given map.

Long2IntRBTreeMap(Long2IntSortedMap m)
Creates a new tree map copying a given sorted map (and its Comparator).

Long2IntRBTreeMap(Map<? extends Long,? extends Integer> m)
Creates a new tree map copying a given map.

Long2IntRBTreeMap(SortedMap<Long,Integer> m)
Creates a new tree map copying a given sorted map (and its Comparator).

Method Summary

void	clear() Removes all associations from this function (optional operation).
Object	clone() Returns a deep copy of this tree map.
LongComparator	comparator() Returns the comparator associated with this sorted set, or null if it uses its keys' natural ordering.
boolean	containsKey(long k) Checks whether the given value is contained in AbstractLong2IntMap.keySet().
boolean	containsValue(int v) Checks whether the given value is contained in AbstractLong2IntMap.values().
long	firstLongKey()
int	get(long k) Returns the value to which the given key is mapped.
Long2IntSortedMap	headMap(long to) Returns a view of the portion of this sorted map whose keys are strictly less than toKey.
boolean	isEmpty()
LongSortedSet	keySet() Returns a type-specific sorted set view of the keys contained in this map.
long	lastLongKey()
ObjectSortedSet<Long2IntMap.Entry>	long2IntEntrySet() Returns a type-specific set view of the mappings contained in this map.
int	put(long k, int v) Adds a pair to the map.
Integer	put(Long ok, Integer ov) Delegates to the corresponding type-specific method, taking care of returning null on a missing key.
int	remove(long k) Removes the mapping with the given key.
Integer	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.
Long2IntSortedMap	subMap(long from, long to) Returns a view of the portion of this sorted map whose keys range from fromKey, inclusive, to toKey, exclusive.
Long2IntSortedMap	tailMap(long from) Returns a view of the portion of this sorted map whose keys are greater than or equal to fromKey.
IntCollection	values() Returns a type-specific collection view of the values contained in this map.

Methods inherited from class it.unimi.dsi.fastutil.longs.AbstractLong2IntSortedMap

entrySet, firstKey, headMap, lastKey, subMap, tailMap

Methods inherited from class it.unimi.dsi.fastutil.longs.AbstractLong2IntMap

containsValue, equals, hashCode, putAll, toString

Methods inherited from class it.unimi.dsi.fastutil.longs.AbstractLong2IntFunction

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.longs.Long2IntFunction

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

Long2IntRBTreeMap

public Long2IntRBTreeMap()

Creates a new empty tree map.

Long2IntRBTreeMap

public Long2IntRBTreeMap(Comparator<? super Long> c)

Creates a new empty tree map with the given comparator.

Parameters:

c - a (possibly type-specific) comparator.

Long2IntRBTreeMap

public Long2IntRBTreeMap(Map<? extends Long,? extends Integer> m)

Creates a new tree map copying a given map.

Parameters:

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

Long2IntRBTreeMap

public Long2IntRBTreeMap(SortedMap<Long,Integer> 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.

Long2IntRBTreeMap

public Long2IntRBTreeMap(Long2IntMap m)

Creates a new tree map copying a given map.

Parameters:

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

Long2IntRBTreeMap

public Long2IntRBTreeMap(Long2IntSortedMap 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.

Long2IntRBTreeMap

public Long2IntRBTreeMap(long[] k,
                         int[] v,
                         Comparator<? super Long> 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.

Long2IntRBTreeMap

public Long2IntRBTreeMap(long[] k,
                         int[] 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 int put(long k,
               int v)

Description copied from interface: Long2IntFunction

Adds a pair to the map.

Specified by:

put in interface Long2IntFunction

Overrides:

put in class AbstractLong2IntFunction

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 int remove(long k)

Description copied from interface: Long2IntFunction

Removes the mapping with the given key.

Specified by:

remove in interface Long2IntFunction

Overrides:

remove in class AbstractLong2IntFunction

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 Integer put(Long ok,
                   Integer ov)

Description copied from class: AbstractLong2IntFunction

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<Long,Integer>

Specified by:

put in interface Map<Long,Integer>

Overrides:

put in class AbstractLong2IntFunction

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 Integer remove(Object ok)

Description copied from class: AbstractLong2IntFunction

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<Long,Integer>

Specified by:

remove in interface Map<Long,Integer>

Overrides:

remove in class AbstractLong2IntFunction

Returns:

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

See Also:

Map.remove(Object)

containsValue

public boolean containsValue(int v)

Description copied from class: AbstractLong2IntMap

Checks whether the given value is contained in AbstractLong2IntMap.values().

Specified by:

containsValue in interface Long2IntMap

Overrides:

containsValue in class AbstractLong2IntMap

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<Long,Integer>

Specified by:

clear in interface Map<Long,Integer>

Overrides:

clear in class AbstractLong2IntFunction

See Also:

Map.clear()

containsKey

public boolean containsKey(long k)

Description copied from class: AbstractLong2IntMap

Checks whether the given value is contained in AbstractLong2IntMap.keySet().

Specified by:

containsKey in interface Long2IntFunction

Overrides:

containsKey in class AbstractLong2IntMap

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<Long,Integer>

Specified by:

size in interface Map<Long,Integer>

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<Long,Integer>

Overrides:

isEmpty in class AbstractLong2IntMap

get

public int get(long k)

Description copied from interface: Long2IntFunction

Returns the value to which the given key is mapped.

Specified by:

get in interface Long2IntFunction

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)

firstLongKey

public long firstLongKey()

Specified by:

firstLongKey in interface Long2IntSortedMap

See Also:

SortedMap.firstKey()

lastLongKey

public long lastLongKey()

Specified by:

lastLongKey in interface Long2IntSortedMap

See Also:

SortedMap.lastKey()

long2IntEntrySet

public ObjectSortedSet<Long2IntMap.Entry> long2IntEntrySet()

Description copied from interface: Long2IntMap

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 Long2IntMap.entrySet() so that it returns an ObjectSet of objects of type Long2IntMap.Entry (the latter makes it possible to access keys and values with type-specific methods).

Specified by:

long2IntEntrySet in interface Long2IntMap

Specified by:

long2IntEntrySet in interface Long2IntSortedMap

Returns:

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

See Also:

Long2IntMap.entrySet()

keySet

public LongSortedSet 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 Long2IntMap

Specified by:

keySet in interface Long2IntSortedMap

Specified by:

keySet in interface Map<Long,Integer>

Overrides:

keySet in class AbstractLong2IntSortedMap

Returns:

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

See Also:

Map.keySet()

values

public IntCollection 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 Long2IntMap

Specified by:

values in interface Long2IntSortedMap

Specified by:

values in interface Map<Long,Integer>

Overrides:

values in class AbstractLong2IntSortedMap

Returns:

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

See Also:

Map.values()

comparator

public LongComparator comparator()

Description copied from interface: Long2IntSortedMap

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 Long2IntSortedMap

Specified by:

comparator in interface SortedMap<Long,Integer>

See Also:

SortedMap.comparator()

headMap

public Long2IntSortedMap headMap(long to)

Description copied from interface: Long2IntSortedMap

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

Specified by:

headMap in interface Long2IntSortedMap

See Also:

SortedMap.headMap(Object)

tailMap

public Long2IntSortedMap tailMap(long from)

Description copied from interface: Long2IntSortedMap

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

Specified by:

tailMap in interface Long2IntSortedMap

See Also:

SortedMap.tailMap(Object)

subMap

public Long2IntSortedMap subMap(long from,
                                long to)

Description copied from interface: Long2IntSortedMap

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

Specified by:

subMap in interface Long2IntSortedMap

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.