Package it.unimi.dsi.fastutil.chars

Class CharRBTreeSet

java.lang.Object

java.util.AbstractCollection<java.lang.Character>

it.unimi.dsi.fastutil.chars.AbstractCharCollection

it.unimi.dsi.fastutil.chars.AbstractCharSet

it.unimi.dsi.fastutil.chars.AbstractCharSortedSet

it.unimi.dsi.fastutil.chars.CharRBTreeSet

All Implemented Interfaces:

CharBidirectionalIterable, CharCollection, CharIterable, CharSet, CharSortedSet, java.io.Serializable, java.lang.Cloneable, java.lang.Iterable<java.lang.Character>, java.util.Collection<java.lang.Character>, java.util.Set<java.lang.Character>, java.util.SortedSet<java.lang.Character>

public class CharRBTreeSet
extends AbstractCharSortedSet
implements java.io.Serializable, java.lang.Cloneable, CharSortedSet

A type-specific red-black tree set with a fast, small-footprint implementation.

The iterators provided by 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

Constructor Summary

Constructors

Constructor	Description
CharRBTreeSet()	Creates a new empty tree set.
CharRBTreeSet(char[] a)	Creates a new tree set copying the elements of an array.
CharRBTreeSet(char[] a, int offset, int length)	Creates a new tree set and fills it with the elements of a given array.
CharRBTreeSet(char[] a, int offset, int length, java.util.Comparator<? super java.lang.Character> c)	Creates a new tree set and fills it with the elements of a given array using a given Comparator.
CharRBTreeSet(char[] a, java.util.Comparator<? super java.lang.Character> c)	Creates a new tree set copying the elements of an array using a given Comparator.
CharRBTreeSet(CharCollection c)	Creates a new tree set copying a given type-specific collection.
CharRBTreeSet(CharIterator i)	Creates a new tree set using elements provided by a type-specific iterator.
CharRBTreeSet(CharSortedSet s)	Creates a new tree set copying a given type-specific sorted set (and its Comparator).
CharRBTreeSet(java.util.Collection<? extends java.lang.Character> c)	Creates a new tree set copying a given collection.
CharRBTreeSet(java.util.Comparator<? super java.lang.Character> c)	Creates a new empty tree set with the given comparator.
CharRBTreeSet(java.util.Iterator<?> i)	Creates a new tree set using elements provided by an iterator.
CharRBTreeSet(java.util.SortedSet<java.lang.Character> s)	Creates a new tree set copying a given sorted set (and its Comparator).

Method Summary

Modifier and Type	Method	Description
boolean	add(char k)	Ensures that this collection contains the specified element (optional operation).
void	clear()
java.lang.Object	clone()	Returns a deep copy of this tree set.
CharComparator	comparator()
boolean	contains(char k)	Returns true if this collection contains the specified element.
char	firstChar()	Returns the first (lowest) element currently in this set.
CharSortedSet	headSet(char to)	Returns a view of the portion of this sorted set whose elements are strictly less than toElement.
boolean	isEmpty()
CharBidirectionalIterator	iterator()	Returns a type-specific iterator on the elements of this collection.
CharBidirectionalIterator	iterator(char from)	Returns a type-specific BidirectionalIterator on the elements in this set, starting from a given element of the domain (optional operation).
char	lastChar()	Returns the last (highest) element currently in this set.
boolean	remove(char k)	Removes an element from this set.
int	size()
CharSortedSet	subSet(char from, char to)	Returns a view of the portion of this sorted set whose elements range from fromElement, inclusive, to toElement, exclusive.
CharSortedSet	tailSet(char from)	Returns a view of the portion of this sorted set whose elements are greater than or equal to fromElement.

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

add, addAll, contains, containsAll, remove, removeAll, retainAll, toArray, toCharArray, toCharArray, toString

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

equals, hashCode, rem

Methods inherited from class java.util.AbstractCollection

addAll, containsAll, removeAll, retainAll, toArray, toArray

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

addAll, containsAll, removeAll, removeIf, removeIf, retainAll, toArray, toCharArray, toCharArray

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

forEach, forEach

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

add, contains, rem, remove

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

first, headSet, last, subSet, tailSet

Methods inherited from interface java.util.Collection

parallelStream, stream

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Set

addAll, containsAll, equals, hashCode, removeAll, retainAll, toArray, toArray

Methods inherited from interface java.util.SortedSet

spliterator

Constructor Detail

CharRBTreeSet

public CharRBTreeSet()

Creates a new empty tree set.

CharRBTreeSet

public CharRBTreeSet(java.util.Comparator<? super java.lang.Character> c)

Creates a new empty tree set with the given comparator.

Parameters:

c - a Comparator (even better, a type-specific comparator).

CharRBTreeSet

public CharRBTreeSet(java.util.Collection<? extends java.lang.Character> c)

Creates a new tree set copying a given collection.

Parameters:

c - a collection to be copied into the new tree set.

CharRBTreeSet

public CharRBTreeSet(java.util.SortedSet<java.lang.Character> s)

Creates a new tree set copying a given sorted set (and its Comparator).

Parameters:

s - a SortedSet to be copied into the new tree set.

CharRBTreeSet

public CharRBTreeSet(CharCollection c)

Creates a new tree set copying a given type-specific collection.

Parameters:

c - a type-specific collection to be copied into the new tree set.

CharRBTreeSet

public CharRBTreeSet(CharSortedSet s)

Creates a new tree set copying a given type-specific sorted set (and its Comparator).

Parameters:

s - a type-specific sorted set to be copied into the new tree set.

CharRBTreeSet

public CharRBTreeSet(CharIterator i)

Creates a new tree set using elements provided by a type-specific iterator.

Parameters:

i - a type-specific iterator whose elements will fill the set.

CharRBTreeSet

public CharRBTreeSet(java.util.Iterator<?> i)

Creates a new tree set using elements provided by an iterator.

Parameters:

i - an iterator whose elements will fill the set.

CharRBTreeSet

public CharRBTreeSet(char[] a,
                     int offset,
                     int length,
                     java.util.Comparator<? super java.lang.Character> c)

Creates a new tree set and fills it with the elements of a given array using a given Comparator.

Parameters:

a - an array whose elements will be used to fill the set.

offset - the first element to use.

length - the number of elements to use.

c - a Comparator (even better, a type-specific comparator).

CharRBTreeSet

public CharRBTreeSet(char[] a,
                     int offset,
                     int length)

Creates a new tree set and fills it with the elements of a given array.

Parameters:

a - an array whose elements will be used to fill the set.

offset - the first element to use.

length - the number of elements to use.

CharRBTreeSet

public CharRBTreeSet(char[] a)

Creates a new tree set copying the elements of an array.

Parameters:

a - an array to be copied into the new tree set.

CharRBTreeSet

public CharRBTreeSet(char[] a,
                     java.util.Comparator<? super java.lang.Character> c)

Creates a new tree set copying the elements of an array using a given Comparator.

Parameters:

a - an array to be copied into the new tree set.

c - a Comparator (even better, a type-specific comparator).

Method Detail

add

public boolean add(char k)

Description copied from class: AbstractCharCollection

Ensures that this collection contains the specified element (optional operation).

This implementation always throws an UnsupportedOperationException.

Specified by:

add in interface CharCollection

Overrides:

add in class AbstractCharCollection

See Also:

Collection.add(Object)

remove

public boolean remove(char k)

Description copied from class: AbstractCharSet

Removes an element from this set.

Note that the corresponding method of a type-specific collection is rem(). This unfortunate situation is caused by the clash with the similarly named index-based method in the List interface. Delegates to the type-specific rem() method implemented by type-specific abstract Collection superclass.

Specified by:

remove in interface CharSet

Overrides:

remove in class AbstractCharSet

See Also:

Collection.remove(Object)

contains

public boolean contains(char k)

Description copied from class: AbstractCharCollection

Returns true if this collection contains the specified element.

This implementation iterates over the elements in the collection, looking for the specified element.

Specified by:

contains in interface CharCollection

Overrides:

contains in class AbstractCharCollection

See Also:

Collection.contains(Object)

clear

public void clear()

Specified by:

clear in interface java.util.Collection<java.lang.Character>

Specified by:

clear in interface java.util.Set<java.lang.Character>

Overrides:

clear in class java.util.AbstractCollection<java.lang.Character>

size

public int size()

Specified by:

size in interface java.util.Collection<java.lang.Character>

Specified by:

size in interface java.util.Set<java.lang.Character>

Specified by:

size in class java.util.AbstractCollection<java.lang.Character>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface java.util.Collection<java.lang.Character>

Specified by:

isEmpty in interface java.util.Set<java.lang.Character>

Overrides:

isEmpty in class java.util.AbstractCollection<java.lang.Character>

firstChar

public char firstChar()

Description copied from interface: CharSortedSet

Returns the first (lowest) element currently in this set.

Specified by:

firstChar in interface CharSortedSet

See Also:

SortedSet.first()

lastChar

public char lastChar()

Description copied from interface: CharSortedSet

Returns the last (highest) element currently in this set.

Specified by:

lastChar in interface CharSortedSet

See Also:

SortedSet.last()

iterator

public CharBidirectionalIterator iterator()

Description copied from interface: CharCollection

Returns a type-specific iterator on the elements of this collection.

Note that this specification strengthens the one given in Iterable.iterator(), which was already strengthened in the corresponding type-specific class, but was weakened by the fact that this interface extends Collection.

Specified by:

iterator in interface CharBidirectionalIterable

Specified by:

iterator in interface CharCollection

Specified by:

iterator in interface CharIterable

Specified by:

iterator in interface CharSet

Specified by:

iterator in interface CharSortedSet

Specified by:

iterator in interface java.util.Collection<java.lang.Character>

Specified by:

iterator in interface java.lang.Iterable<java.lang.Character>

Specified by:

iterator in interface java.util.Set<java.lang.Character>

Specified by:

iterator in class AbstractCharSortedSet

Returns:

a type-specific iterator on the elements of this collection.

See Also:

Iterable.iterator()

iterator

public CharBidirectionalIterator iterator(char from)

Description copied from interface: CharSortedSet

Returns a type-specific BidirectionalIterator on the elements in this set, starting from a given element of the domain (optional operation).

This method returns a type-specific bidirectional iterator with given starting point. The starting point is any element comparable to the elements of this set (even if it does not actually belong to the set). The next element of the returned iterator is the least element of the set that is greater than the starting point (if there are no elements greater than the starting point, hasNext() will return false). The previous element of the returned iterator is the greatest element of the set that is smaller than or equal to the starting point (if there are no elements smaller than or equal to the starting point, hasPrevious() will return false).

Note that passing the last element of the set as starting point and calling previous() you can traverse the entire set in reverse order.

Specified by:

iterator in interface CharSortedSet

Parameters:

from - an element to start from.

Returns:

a bidirectional iterator on the element in this set, starting at the given element.

comparator

public CharComparator comparator()

Description copied from interface: CharSortedSet

Note that this specification strengthens the one given in SortedSet.comparator().

Specified by:

comparator in interface CharSortedSet

Specified by:

comparator in interface java.util.SortedSet<java.lang.Character>

headSet

public CharSortedSet headSet(char to)

Description copied from interface: CharSortedSet

Returns a view of the portion of this sorted set whose elements are strictly less than toElement.

Note that this specification strengthens the one given in SortedSet.headSet(Object).

Specified by:

headSet in interface CharSortedSet

See Also:

SortedSet.headSet(Object)

tailSet

public CharSortedSet tailSet(char from)

Description copied from interface: CharSortedSet

Returns a view of the portion of this sorted set whose elements are greater than or equal to fromElement.

Note that this specification strengthens the one given in SortedSet.headSet(Object).

Specified by:

tailSet in interface CharSortedSet

See Also:

SortedSet.tailSet(Object)

subSet

public CharSortedSet subSet(char from,
                            char to)

Description copied from interface: CharSortedSet

Returns a view of the portion of this sorted set whose elements range from fromElement, inclusive, to toElement, exclusive.

Note that this specification strengthens the one given in SortedSet.subSet(Object,Object).

Specified by:

subSet in interface CharSortedSet

See Also:

SortedSet.subSet(Object,Object)

clone

public java.lang.Object clone()

Returns a deep copy of this tree set.

This method performs a deep copy of this tree set; the data stored in the set, however, is not cloned. Note that this makes a difference only for object keys.

Returns:

a deep copy of this tree set.