it.unimi.dsi.fastutil.ints
Class Int2ReferenceRBTreeMap<V>

java.lang.Object
  it.unimi.dsi.fastutil.ints.AbstractInt2ReferenceFunction<V>
      it.unimi.dsi.fastutil.ints.AbstractInt2ReferenceMap<V>
          it.unimi.dsi.fastutil.ints.AbstractInt2ReferenceSortedMap<V>
              it.unimi.dsi.fastutil.ints.Int2ReferenceRBTreeMap<V>

All Implemented Interfaces:

Function<Integer,V>, Int2ReferenceFunction<V>, Int2ReferenceMap<V>, Int2ReferenceSortedMap<V>, Serializable, Cloneable, Map<Integer,V>, SortedMap<Integer,V>

public class Int2ReferenceRBTreeMap<V>
extends AbstractInt2ReferenceSortedMap<V>
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.ints.AbstractInt2ReferenceMap

AbstractInt2ReferenceMap.BasicEntry<V>

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.ints.Int2ReferenceSortedMap

Int2ReferenceSortedMap.FastSortedEntrySet<V>

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.ints.Int2ReferenceMap

Int2ReferenceMap.FastEntrySet<V>

Field Summary

static long

serialVersionUID

Constructor Summary

Int2ReferenceRBTreeMap()
Creates a new empty tree map.

Int2ReferenceRBTreeMap(Comparator<? super Integer> c)
Creates a new empty tree map with the given comparator.

Int2ReferenceRBTreeMap(int[] k, V[] v)
Creates a new tree map using the elements of two parallel arrays.

Int2ReferenceRBTreeMap(int[] k, V[] v, Comparator<? super Integer> c)
Creates a new tree map using the elements of two parallel arrays and the given comparator.

Int2ReferenceRBTreeMap(Int2ReferenceMap<? extends V> m)
Creates a new tree map copying a given map.

Int2ReferenceRBTreeMap(Int2ReferenceSortedMap<V> m)
Creates a new tree map copying a given sorted map (and its Comparator).

Int2ReferenceRBTreeMap(Map<? extends Integer,? extends V> m)
Creates a new tree map copying a given map.

Int2ReferenceRBTreeMap(SortedMap<Integer,V> 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.
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 AbstractInt2ReferenceMap.keySet().
boolean	containsValue(Object v) Checks whether the given value is contained in AbstractInt2ReferenceMap.values().
int	firstIntKey()
V	get(int k) Returns the value to which the given key is mapped.
Int2ReferenceSortedMap<V>	headMap(int to) Returns a view of the portion of this sorted map whose keys are strictly less than toKey.
ObjectSortedSet<Int2ReferenceMap.Entry<V>>	int2ReferenceEntrySet() Returns a type-specific 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.
Int2ReferenceSortedMap<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.
Int2ReferenceSortedMap<V>	tailMap(int from) Returns a view of the portion of this sorted map whose keys are greater than or equal to fromKey.
ReferenceCollection<V>	values() Returns a type-specific collection view of the values contained in this map.

Methods inherited from class it.unimi.dsi.fastutil.ints.AbstractInt2ReferenceSortedMap

entrySet, firstKey, headMap, lastKey, subMap, tailMap

Methods inherited from class it.unimi.dsi.fastutil.ints.AbstractInt2ReferenceMap

equals, hashCode, putAll, toString

Methods inherited from class it.unimi.dsi.fastutil.ints.AbstractInt2ReferenceFunction

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.ints.Int2ReferenceFunction

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

Methods inherited from interface java.util.Map

containsKey, equals, get, hashCode, putAll

Field Detail

serialVersionUID

public static final long serialVersionUID

See Also:

Constant Field Values

Constructor Detail

Int2ReferenceRBTreeMap

public Int2ReferenceRBTreeMap()

Creates a new empty tree map.

Int2ReferenceRBTreeMap

public Int2ReferenceRBTreeMap(Comparator<? super Integer> c)

Creates a new empty tree map with the given comparator.

Parameters:

c - a (possibly type-specific) comparator.

Int2ReferenceRBTreeMap

public Int2ReferenceRBTreeMap(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.

Int2ReferenceRBTreeMap

public Int2ReferenceRBTreeMap(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.

Int2ReferenceRBTreeMap

public Int2ReferenceRBTreeMap(Int2ReferenceMap<? 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.

Int2ReferenceRBTreeMap

public Int2ReferenceRBTreeMap(Int2ReferenceSortedMap<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.

Int2ReferenceRBTreeMap

public Int2ReferenceRBTreeMap(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.

Int2ReferenceRBTreeMap

public Int2ReferenceRBTreeMap(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: Int2ReferenceFunction

Adds a pair to the map.

Specified by:

put in interface Int2ReferenceFunction<V>

Overrides:

put in class AbstractInt2ReferenceFunction<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: Int2ReferenceFunction

Removes the mapping with the given key.

Specified by:

remove in interface Int2ReferenceFunction<V>

Overrides:

remove in class AbstractInt2ReferenceFunction<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: AbstractInt2ReferenceFunction

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 AbstractInt2ReferenceFunction<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: AbstractInt2ReferenceFunction

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 AbstractInt2ReferenceFunction<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: AbstractInt2ReferenceMap

Checks whether the given value is contained in AbstractInt2ReferenceMap.values().

Specified by:

containsValue in interface Map<Integer,V>

Overrides:

containsValue in class AbstractInt2ReferenceMap<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 AbstractInt2ReferenceFunction<V>

See Also:

Map.clear()

containsKey

public boolean containsKey(int k)

Description copied from class: AbstractInt2ReferenceMap

Checks whether the given value is contained in AbstractInt2ReferenceMap.keySet().

Specified by:

containsKey in interface Int2ReferenceFunction<V>

Overrides:

containsKey in class AbstractInt2ReferenceMap<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 AbstractInt2ReferenceMap<V>

get

public V get(int k)

Description copied from interface: Int2ReferenceFunction

Returns the value to which the given key is mapped.

Specified by:

get in interface Int2ReferenceFunction<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 Int2ReferenceSortedMap<V>

See Also:

SortedMap.firstKey()

lastIntKey

public int lastIntKey()

Specified by:

lastIntKey in interface Int2ReferenceSortedMap<V>

See Also:

SortedMap.lastKey()

int2ReferenceEntrySet

public ObjectSortedSet<Int2ReferenceMap.Entry<V>> int2ReferenceEntrySet()

Description copied from interface: Int2ReferenceMap

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 Int2ReferenceMap.entrySet() so that it returns an ObjectSet of objects of type Int2ReferenceMap.Entry (the latter makes it possible to access keys and values with type-specific methods).

Specified by:

int2ReferenceEntrySet in interface Int2ReferenceMap<V>

Specified by:

int2ReferenceEntrySet in interface Int2ReferenceSortedMap<V>

Returns:

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

See Also:

Int2ReferenceMap.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 Int2ReferenceMap<V>

Specified by:

keySet in interface Int2ReferenceSortedMap<V>

Specified by:

keySet in interface Map<Integer,V>

Overrides:

keySet in class AbstractInt2ReferenceSortedMap<V>

Returns:

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

See Also:

Map.keySet()

values

public ReferenceCollection<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 Int2ReferenceMap<V>

Specified by:

values in interface Int2ReferenceSortedMap<V>

Specified by:

values in interface Map<Integer,V>

Overrides:

values in class AbstractInt2ReferenceSortedMap<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: Int2ReferenceSortedMap

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 Int2ReferenceSortedMap<V>

Specified by:

comparator in interface SortedMap<Integer,V>

See Also:

SortedMap.comparator()

headMap

public Int2ReferenceSortedMap<V> headMap(int to)

Description copied from interface: Int2ReferenceSortedMap

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

Specified by:

headMap in interface Int2ReferenceSortedMap<V>

See Also:

SortedMap.headMap(Object)

tailMap

public Int2ReferenceSortedMap<V> tailMap(int from)

Description copied from interface: Int2ReferenceSortedMap

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

Specified by:

tailMap in interface Int2ReferenceSortedMap<V>

See Also:

SortedMap.tailMap(Object)

subMap

public Int2ReferenceSortedMap<V> subMap(int from,
                                        int to)

Description copied from interface: Int2ReferenceSortedMap

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

Specified by:

subMap in interface Int2ReferenceSortedMap<V>

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.