Package it.unimi.dsi.fastutil.chars

Class Char2IntSortedMaps

java.lang.Object

it.unimi.dsi.fastutil.chars.Char2IntSortedMaps

public final class Char2IntSortedMaps
extends Object

A class providing static methods and objects that do useful things with type-specific sorted maps.

See Also:

• Collections

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Char2IntSortedMaps.EmptySortedMap	An immutable class representing an empty type-specific sorted map.
static class	Char2IntSortedMaps.Singleton	An immutable class representing a type-specific singleton sorted map.
static class	Char2IntSortedMaps.SynchronizedSortedMap	A synchronized wrapper class for sorted maps.
static class	Char2IntSortedMaps.UnmodifiableSortedMap	An unmodifiable wrapper class for sorted maps.

Field Summary

Fields

Modifier and Type	Field	Description
static final Char2IntSortedMaps.EmptySortedMap	EMPTY_MAP	An empty sorted map (immutable).

Method Summary

Modifier and Type	Method	Description
static Comparator<? super Map.Entry<Character,?>>	entryComparator(CharComparator comparator)	Returns a comparator for entries based on a given comparator on keys.
static ObjectBidirectionalIterable<Char2IntMap.Entry>	fastIterable(Char2IntSortedMap map)	Returns an iterable yielding a bidirectional iterator that will be fast, if possible, on the entry set of the provided map.
static ObjectBidirectionalIterator<Char2IntMap.Entry>	fastIterator(Char2IntSortedMap map)	Returns a bidirectional iterator that will be fast, if possible, on the entry set of the provided map.
static Char2IntSortedMap	singleton(char key, int value)	Returns a type-specific immutable sorted map containing only the specified pair.
static Char2IntSortedMap	singleton(char key, int value, CharComparator comparator)	Returns a type-specific immutable sorted map containing only the specified pair.
static Char2IntSortedMap	singleton(Character key, Integer value)	Returns a type-specific immutable sorted map containing only the specified pair.
static Char2IntSortedMap	singleton(Character key, Integer value, CharComparator comparator)	Returns a type-specific immutable sorted map containing only the specified pair.
static Char2IntSortedMap	synchronize(Char2IntSortedMap m)	Returns a synchronized type-specific sorted map backed by the given type-specific sorted map.
static Char2IntSortedMap	synchronize(Char2IntSortedMap m, Object sync)	Returns a synchronized type-specific sorted map backed by the given type-specific sorted map, using an assigned object to synchronize.
static Char2IntSortedMap	unmodifiable(Char2IntSortedMap m)	Returns an unmodifiable type-specific sorted map backed by the given type-specific sorted map.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

EMPTY_MAP

public static final Char2IntSortedMaps.EmptySortedMap EMPTY_MAP

An empty sorted map (immutable). It is serializable and cloneable.

Method Details

entryComparator

public static Comparator<? super Map.Entry<Character,?>> entryComparator(CharComparator comparator)

Returns a comparator for entries based on a given comparator on keys.

Parameters:

comparator - a comparator on keys.

Returns:

the associated comparator on entries.

fastIterator

public static ObjectBidirectionalIterator<Char2IntMap.Entry> fastIterator(Char2IntSortedMap map)

Returns a bidirectional iterator that will be fast, if possible, on the entry set of the provided map.

Parameters:

map - a map from which we will try to extract a (fast) bidirectional iterator on the entry set.

Returns:

a bidirectional iterator on the entry set of the given map that will be fast, if possible.

Since:

8.0.0

fastIterable

public static ObjectBidirectionalIterable<Char2IntMap.Entry> fastIterable(Char2IntSortedMap map)

Returns an iterable yielding a bidirectional iterator that will be fast, if possible, on the entry set of the provided map.

Parameters:

map - a map from which we will try to extract an iterable yielding a (fast) bidirectional iterator on the entry set.

Returns:

an iterable yielding a bidirectional iterator on the entry set of the given map that will be fast, if possible.

Since:

8.0.0

singleton

public static Char2IntSortedMap singleton(Character key,
 Integer value)

Returns a type-specific immutable sorted map containing only the specified pair. The returned sorted map is serializable and cloneable.

Note that albeit the returned map is immutable, its default return value may be changed.

Parameters:

key - the only key of the returned sorted map.

value - the only value of the returned sorted map.

Returns:

a type-specific immutable sorted map containing just the pair <key,value>.

singleton

public static Char2IntSortedMap singleton(Character key,
 Integer value,
 CharComparator comparator)

Returns a type-specific immutable sorted map containing only the specified pair. The returned sorted map is serializable and cloneable.

Note that albeit the returned map is immutable, its default return value may be changed.

Parameters:

key - the only key of the returned sorted map.

value - the only value of the returned sorted map.

comparator - the comparator to use in the returned sorted map.

Returns:

a type-specific immutable sorted map containing just the pair <key,value>.

singleton

public static Char2IntSortedMap singleton(char key,
 int value)

Returns a type-specific immutable sorted map containing only the specified pair. The returned sorted map is serializable and cloneable.

Note that albeit the returned map is immutable, its default return value may be changed.

Parameters:

key - the only key of the returned sorted map.

value - the only value of the returned sorted map.

Returns:

a type-specific immutable sorted map containing just the pair <key,value>.

singleton

public static Char2IntSortedMap singleton(char key,
 int value,
 CharComparator comparator)

Returns a type-specific immutable sorted map containing only the specified pair. The returned sorted map is serializable and cloneable.

Note that albeit the returned map is immutable, its default return value may be changed.

Parameters:

key - the only key of the returned sorted map.

value - the only value of the returned sorted map.

comparator - the comparator to use in the returned sorted map.

Returns:

a type-specific immutable sorted map containing just the pair <key,value>.

synchronize

public static Char2IntSortedMap synchronize(Char2IntSortedMap m)

Returns a synchronized type-specific sorted map backed by the given type-specific sorted map.

Parameters:

m - the sorted map to be wrapped in a synchronized sorted map.

Returns:

a synchronized view of the specified sorted map.

See Also:

• Collections.synchronizedSortedMap(SortedMap)

synchronize

public static Char2IntSortedMap synchronize(Char2IntSortedMap m,
 Object sync)

Returns a synchronized type-specific sorted map backed by the given type-specific sorted map, using an assigned object to synchronize.

Parameters:

m - the sorted map to be wrapped in a synchronized sorted map.

sync - an object that will be used to synchronize the access to the sorted sorted map.

Returns:

a synchronized view of the specified sorted map.

See Also:

• Collections.synchronizedSortedMap(SortedMap)

unmodifiable

public static Char2IntSortedMap unmodifiable(Char2IntSortedMap m)

Returns an unmodifiable type-specific sorted map backed by the given type-specific sorted map.

Parameters:

m - the sorted map to be wrapped in an unmodifiable sorted map.

Returns:

an unmodifiable view of the specified sorted map.

See Also:

• Collections.unmodifiableSortedMap(SortedMap)