it.unimi.dsi.fastutil.floats
Class FloatArraySet

java.lang.Object
  it.unimi.dsi.fastutil.floats.AbstractFloatCollection
      it.unimi.dsi.fastutil.floats.AbstractFloatSet
          it.unimi.dsi.fastutil.floats.FloatArraySet

All Implemented Interfaces:

FloatCollection, FloatIterable, FloatSet, Serializable, Cloneable, Iterable<Float>, Collection<Float>, Set<Float>

public class FloatArraySet
extends AbstractFloatSet
implements Serializable, Cloneable

A simple, brute-force implementation of a set based on a backing array.

The main purpose of this implementation is that of wrapping cleanly the brute-force approach to the storage of a very small number of items: just put them into an array and scan linearly to find an item.

See Also:

Serialized Form

Constructor Summary

FloatArraySet()
Creates a new empty array set.

FloatArraySet(float[] a)
Creates a new array set using the given backing array.

FloatArraySet(float[] a, int size)
Creates a new array set using the given backing array and the given number of elements of the array.

FloatArraySet(FloatSet s)
Creates a new array set copying the contents of a given set.

FloatArraySet(int capacity)
Creates a new empty array set of given initial capacity.

Method Summary

boolean	add(float k)
void	clear()
Object	clone() Returns a deep copy of this set.
boolean	contains(float k)
boolean	isEmpty()
FloatIterator	iterator() Returns a type-specific iterator on the elements of this collection.
boolean	remove(float k) Removes an element from this set.
int	size()

Methods inherited from class it.unimi.dsi.fastutil.floats.AbstractFloatSet

equals, hashCode, rem, remove

Methods inherited from class it.unimi.dsi.fastutil.floats.AbstractFloatCollection

add, addAll, addAll, contains, containsAll, containsAll, floatIterator, rem, removeAll, removeAll, retainAll, retainAll, toArray, toArray, toArray, toFloatArray, toFloatArray, toString

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface it.unimi.dsi.fastutil.floats.FloatCollection

addAll, containsAll, floatIterator, removeAll, retainAll, toArray, toArray, toFloatArray, toFloatArray

Methods inherited from interface java.util.Set

add, addAll, contains, containsAll, removeAll, retainAll, toArray, toArray

Constructor Detail

FloatArraySet

public FloatArraySet(float[] a)

Creates a new array set using the given backing array.

Parameters:

a - the backing array.

FloatArraySet

public FloatArraySet()

Creates a new empty array set.

FloatArraySet

public FloatArraySet(int capacity)

Creates a new empty array set of given initial capacity.

Parameters:

capacity - the initial capacity.

FloatArraySet

public FloatArraySet(FloatSet s)

Creates a new array set copying the contents of a given set.

FloatArraySet

public FloatArraySet(float[] a,
                     int size)

Creates a new array set using the given backing array and the given number of elements of the array.

It is responsibility of the caller that the first size elements of a are distinct (of course, distinct by identity, not by Object.equals(Object)).

Parameters:

a - the backing array.

size - the number of valid elements in a.

Method Detail

iterator

public FloatIterator iterator()

Description copied from interface: FloatCollection

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 FloatCollection

Specified by:

iterator in interface FloatIterable

Specified by:

iterator in interface FloatSet

Specified by:

iterator in interface Iterable<Float>

Specified by:

iterator in interface Collection<Float>

Specified by:

iterator in interface Set<Float>

Specified by:

iterator in class AbstractFloatSet

Returns:

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

contains

public boolean contains(float k)

Specified by:

contains in interface FloatCollection

See Also:

Collection.contains(Object)

size

public int size()

Specified by:

size in interface Collection<Float>

Specified by:

size in interface Set<Float>

remove

public boolean remove(float k)

Description copied from interface: FloatSet

Removes an element from this set.

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

Specified by:

remove in interface FloatSet

Overrides:

remove in class AbstractFloatSet

See Also:

Collection.remove(Object)

add

public boolean add(float k)

Specified by:

add in interface FloatCollection

Overrides:

add in class AbstractFloatCollection

See Also:

Collection.add(Object)

clear

public void clear()

Specified by:

clear in interface Collection<Float>

Specified by:

clear in interface Set<Float>

Overrides:

clear in class AbstractFloatCollection

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<Float>

Specified by:

isEmpty in interface Set<Float>

Overrides:

isEmpty in class AbstractFloatCollection

clone

public Object clone()

Returns a deep copy of this set.

This method performs a deep copy of this hash set; 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 set.