gnu.trove

Class TDoubleHashSet

Implemented Interfaces:
Externalizable

public class TDoubleHashSet
extends TDoubleHash
implements Externalizable

An open addressed set implementation for double primitives.
Authors:
Eric D. Friedman
Rob Eden

Constructor Summary

TDoubleHashSet()
Creates a new TDoubleHashSet instance with the default capacity and load factor.
TDoubleHashSet(TDoubleHashingStrategy strategy)
Creates a new TDoubleHash instance with the default capacity and load factor.
TDoubleHashSet(double[] array)
Creates a new TDoubleHashSet instance containing the elements of array.
TDoubleHashSet(double[] array, TDoubleHashingStrategy strategy)
Creates a new TDoubleHashSet instance containing the elements of array.
TDoubleHashSet(int initialCapacity)
Creates a new TDoubleHashSet instance with a prime capacity equal to or greater than initialCapacity and with the default load factor.
TDoubleHashSet(int initialCapacity, TDoubleHashingStrategy strategy)
Creates a new TDoubleHash instance whose capacity is the next highest prime above initialCapacity + 1 unless that value is already prime.
TDoubleHashSet(int initialCapacity, float loadFactor)
Creates a new TDoubleHashSet instance with a prime capacity equal to or greater than initialCapacity and with the specified load factor.
TDoubleHashSet(int initialCapacity, float loadFactor, TDoubleHashingStrategy strategy)
Creates a new TDoubleHash instance with a prime value at or near the specified capacity and load factor.

Method Summary

boolean
add(double val)
Inserts a value into the set.
boolean
addAll(double[] array)
Adds all of the elements in array to the set.
void
clear()
Empties the set.
boolean
containsAll(double[] array)
Tests the set to determine if all of the elements in array are present.
boolean
equals(Object other)
Compares this set with another set for equality of their stored entries.
int
hashCode()
TDoubleIterator
iterator()
void
readExternal(ObjectInput in)
protected void
rehash(int newCapacity)
Expands the set to accommodate new values.
boolean
remove(double val)
Removes val from the set.
boolean
removeAll(double[] array)
Removes all of the elements in array from the set.
boolean
retainAll(double[] array)
Removes any values in the set which are not contained in array.
double[]
toArray()
Returns a new array containing the values in the set.
void
writeExternal(ObjectOutput out)

Constructor Details

TDoubleHashSet

public TDoubleHashSet()
Creates a new TDoubleHashSet instance with the default capacity and load factor.

TDoubleHashSet

public TDoubleHashSet(TDoubleHashingStrategy strategy)
Creates a new TDoubleHash instance with the default capacity and load factor.
Parameters:
strategy - used to compute hash codes and to compare keys.

TDoubleHashSet

public TDoubleHashSet(double[] array)
Creates a new TDoubleHashSet instance containing the elements of array.
Parameters:
array - an array of double primitives

TDoubleHashSet

public TDoubleHashSet(double[] array,
                      TDoubleHashingStrategy strategy)
Creates a new TDoubleHashSet instance containing the elements of array.
Parameters:
array - an array of double primitives
strategy - used to compute hash codes and to compare keys.

TDoubleHashSet

public TDoubleHashSet(int initialCapacity)
Creates a new TDoubleHashSet instance with a prime capacity equal to or greater than initialCapacity and with the default load factor.
Parameters:
initialCapacity - an int value

TDoubleHashSet

public TDoubleHashSet(int initialCapacity,
                      TDoubleHashingStrategy strategy)
Creates a new TDoubleHash instance whose capacity is the next highest prime above initialCapacity + 1 unless that value is already prime.
Parameters:
initialCapacity - an int value
strategy - used to compute hash codes and to compare keys.

TDoubleHashSet

public TDoubleHashSet(int initialCapacity,
                      float loadFactor)
Creates a new TDoubleHashSet instance with a prime capacity equal to or greater than initialCapacity and with the specified load factor.
Parameters:
initialCapacity - an int value
loadFactor - a float value

TDoubleHashSet

public TDoubleHashSet(int initialCapacity,
                      float loadFactor,
                      TDoubleHashingStrategy strategy)
Creates a new TDoubleHash instance with a prime value at or near the specified capacity and load factor.
Parameters:
initialCapacity - used to find a prime capacity for the table.
loadFactor - used to calculate the threshold over which rehashing takes place.
strategy - used to compute hash codes and to compare keys.

Method Details

add

public boolean add(double val)
Inserts a value into the set.
Parameters:
val - an double value
Returns:
true if the set was modified by the add operation

addAll

public boolean addAll(double[] array)
Adds all of the elements in array to the set.
Parameters:
array - an array of double primitives.
Returns:
true if the set was modified by the add all operation.

clear

public void clear()
Empties the set.

containsAll

public boolean containsAll(double[] array)
Tests the set to determine if all of the elements in array are present.
Parameters:
array - an array of double primitives.
Returns:
true if all elements were present in the set.

equals

public boolean equals(Object other)
Compares this set with another set for equality of their stored entries.
Parameters:
other - an Object value
Returns:
a boolean value

hashCode

public int hashCode()

iterator

public TDoubleIterator iterator()
Returns:
a TDoubleIterator with access to the values in this set

readExternal

public void readExternal(ObjectInput in)
            throws IOException,
                   ClassNotFoundException

rehash

protected void rehash(int newCapacity)
Expands the set to accommodate new values.
Parameters:
newCapacity - an int value

remove

public boolean remove(double val)
Removes val from the set.
Parameters:
val - an double value
Returns:
true if the set was modified by the remove operation.

removeAll

public boolean removeAll(double[] array)
Removes all of the elements in array from the set.
Parameters:
array - an array of double primitives.
Returns:
true if the set was modified by the remove all operation.

retainAll

public boolean retainAll(double[] array)
Removes any values in the set which are not contained in array.
Parameters:
array - an array of double primitives.
Returns:
true if the set was modified by the retain all operation

toArray

public double[] toArray()
Returns a new array containing the values in the set.
Returns:
an double[] value

writeExternal

public void writeExternal(ObjectOutput out)
            throws IOException

GNU Trove is copyright B) 2001-2008 Eric D. Friedman. All Rights Reserved.