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java.lang.Objectgnu.trove.THash
gnu.trove.TPrimitiveHash
gnu.trove.TDoubleHash
public abstract class TDoubleHash
An open addressed hashing implementation for double primitives. Created: Sun Nov 4 08:56:06 2001
| Field Summary | |
|---|---|
protected TDoubleHashingStrategy |
_hashingStrategy
strategy used to hash values in this collection |
protected double[] |
_set
the set of doubles |
| Fields inherited from class gnu.trove.TPrimitiveHash |
|---|
_states, FREE, FULL, REMOVED |
| Fields inherited from class gnu.trove.THash |
|---|
_autoCompactionFactor, _autoCompactRemovesRemaining, _free, _loadFactor, _maxSize, _size, DEFAULT_INITIAL_CAPACITY, DEFAULT_LOAD_FACTOR |
| Constructor Summary | |
|---|---|
TDoubleHash()
Creates a new TDoubleHash instance with the default
capacity and load factor. |
|
TDoubleHash(int initialCapacity)
Creates a new TDoubleHash instance whose capacity
is the next highest prime above initialCapacity + 1
unless that value is already prime. |
|
TDoubleHash(int initialCapacity,
float loadFactor)
Creates a new TDoubleHash instance with a prime
value at or near the specified capacity and load factor. |
|
TDoubleHash(int initialCapacity,
float loadFactor,
TDoubleHashingStrategy strategy)
Creates a new TDoubleHash instance with a prime
value at or near the specified capacity and load factor. |
|
TDoubleHash(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. |
|
TDoubleHash(TDoubleHashingStrategy strategy)
Creates a new TDoubleHash instance with the default
capacity and load factor. |
|
| Method Summary | |
|---|---|
java.lang.Object |
clone()
|
int |
computeHashCode(double val)
Default implementation of TDoubleHashingStrategy: delegates hashing to HashFunctions.hash(double). |
boolean |
contains(double val)
Searches the set for val |
boolean |
forEach(TDoubleProcedure procedure)
Executes procedure for each element in the set. |
protected int |
index(double val)
Locates the index of val. |
protected int |
insertionIndex(double val)
Locates the index at which val can be inserted. |
protected void |
removeAt(int index)
Releases the element currently stored at index. |
protected int |
setUp(int initialCapacity)
initializes the hashtable to a prime capacity which is at least initialCapacity + 1. |
| Methods inherited from class gnu.trove.TPrimitiveHash |
|---|
capacity |
| Methods inherited from class gnu.trove.THash |
|---|
calculateGrownCapacity, clear, compact, ensureCapacity, getAutoCompactionFactor, isEmpty, postInsertHook, readExternal, reenableAutoCompaction, rehash, setAutoCompactionFactor, size, tempDisableAutoCompaction, trimToSize, writeExternal |
| Methods inherited from class java.lang.Object |
|---|
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
|---|
protected transient double[] _set
protected TDoubleHashingStrategy _hashingStrategy
| Constructor Detail |
|---|
public TDoubleHash()
TDoubleHash instance with the default
capacity and load factor.
public TDoubleHash(int initialCapacity)
TDoubleHash instance whose capacity
is the next highest prime above initialCapacity + 1
unless that value is already prime.
initialCapacity - an int value
public TDoubleHash(int initialCapacity,
float loadFactor)
TDoubleHash instance with a prime
value at or near the specified capacity and load factor.
initialCapacity - used to find a prime capacity for the table.loadFactor - used to calculate the threshold over which
rehashing takes place.public TDoubleHash(TDoubleHashingStrategy strategy)
TDoubleHash instance with the default
capacity and load factor.
strategy - used to compute hash codes and to compare keys.
public TDoubleHash(int initialCapacity,
TDoubleHashingStrategy strategy)
TDoubleHash instance whose capacity
is the next highest prime above initialCapacity + 1
unless that value is already prime.
initialCapacity - an int valuestrategy - used to compute hash codes and to compare keys.
public TDoubleHash(int initialCapacity,
float loadFactor,
TDoubleHashingStrategy strategy)
TDoubleHash instance with a prime
value at or near the specified capacity and load factor.
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 Detail |
|---|
public java.lang.Object clone()
clone in class TPrimitiveHashprotected int setUp(int initialCapacity)
setUp in class TPrimitiveHashinitialCapacity - an int value
public boolean contains(double val)
val - an double value
boolean valuepublic boolean forEach(TDoubleProcedure procedure)
procedure - a TObjectProcedure value
protected void removeAt(int index)
removeAt in class TPrimitiveHashindex - an int valueprotected int index(double val)
val - an double value
protected int insertionIndex(double val)
val - an double value
int valuepublic final int computeHashCode(double val)
computeHashCode in interface TDoubleHashingStrategyval - the value to hash
|
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