com.gs.collections.impl.set.mutable.primitive.DoubleHashSet Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of gs-collections Show documentation
Show all versions of gs-collections Show documentation
GS Collections is a collections framework for Java. It has JDK-compatible List, Set and Map
implementations with a rich API and set of utility classes that work with any JDK compatible Collections,
Arrays, Maps or Strings. The iteration protocol was inspired by the Smalltalk collection framework.
/*
* Copyright 2014 Goldman Sachs.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.gs.collections.impl.set.mutable.primitive;
import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.io.Serializable;
import java.util.Arrays;
import java.util.NoSuchElementException;
import com.gs.collections.api.DoubleIterable;
import com.gs.collections.api.LazyDoubleIterable;
import com.gs.collections.api.bag.primitive.MutableDoubleBag;
import com.gs.collections.api.block.function.primitive.DoubleToObjectFunction;
import com.gs.collections.api.block.function.primitive.ObjectDoubleToObjectFunction;
import com.gs.collections.api.block.predicate.primitive.DoublePredicate;
import com.gs.collections.api.block.procedure.primitive.DoubleProcedure;
import com.gs.collections.api.iterator.DoubleIterator;
import com.gs.collections.api.list.primitive.MutableDoubleList;
import com.gs.collections.api.set.ImmutableSet;
import com.gs.collections.api.set.MutableSet;
import com.gs.collections.api.set.primitive.ImmutableDoubleSet;
import com.gs.collections.api.set.primitive.MutableDoubleSet;
import com.gs.collections.api.set.primitive.DoubleSet;
import com.gs.collections.impl.bag.mutable.primitive.DoubleHashBag;
import com.gs.collections.impl.factory.primitive.DoubleSets;
import com.gs.collections.impl.lazy.primitive.LazyDoubleIterableAdapter;
import com.gs.collections.impl.list.mutable.primitive.DoubleArrayList;
import com.gs.collections.impl.set.immutable.primitive.ImmutableDoubleSetSerializationProxy;
import com.gs.collections.impl.set.mutable.UnifiedSet;
/**
* This file was automatically generated from template file primitiveHashSet.stg.
*
* @since 3.0.
*/
public final class DoubleHashSet implements MutableDoubleSet, Externalizable
{
private static final long serialVersionUID = 1L;
private static final int OCCUPIED_DATA_RATIO = 2;
private static final int OCCUPIED_SENTINEL_RATIO = 4;
private static final int DEFAULT_INITIAL_CAPACITY = 8;
private static final double EMPTY = 0.0;
private static final double REMOVED = 1.0;
private double[] table;
private int occupiedWithData;
private int occupiedWithSentinels;
// The 32 bits of this integer indicate whether the items 0.0 to 31.0 are present in the set.
private int zeroToThirtyOne;
private int zeroToThirtyOneOccupied;
private transient boolean copyOnWrite;
public DoubleHashSet()
{
this.allocateTable(DEFAULT_INITIAL_CAPACITY << 1);
}
public DoubleHashSet(int initialCapacity)
{
if (initialCapacity < 0)
{
throw new IllegalArgumentException("initial capacity cannot be less than 0");
}
int capacity = this.smallestPowerOfTwoGreaterThan(this.fastCeil(initialCapacity * OCCUPIED_DATA_RATIO));
this.allocateTable(capacity);
}
private int smallestPowerOfTwoGreaterThan(int n)
{
return n > 1 ? Integer.highestOneBit(n - 1) << 1 : 1;
}
private int fastCeil(float v)
{
int possibleResult = (int) v;
if (v - possibleResult > 0.0F)
{
possibleResult++;
}
return possibleResult;
}
public DoubleHashSet(DoubleHashSet set)
{
this.occupiedWithData = set.occupiedWithData;
this.occupiedWithSentinels = set.occupiedWithSentinels;
this.zeroToThirtyOneOccupied = set.zeroToThirtyOneOccupied;
this.zeroToThirtyOne = set.zeroToThirtyOne;
this.allocateTable(set.table.length);
System.arraycopy(set.table, 0, this.table, 0, set.table.length);
}
public static DoubleHashSet newSet(DoubleIterable source)
{
if (source instanceof DoubleHashSet)
{
return new DoubleHashSet((DoubleHashSet) source);
}
return DoubleHashSet.newSetWith(source.toArray());
}
public static DoubleHashSet newSetWith(double... source)
{
DoubleHashSet result = new DoubleHashSet();
result.addAll(source);
return result;
}
private static boolean isBetweenZeroAndThirtyOne(double value)
{
return Double.compare(value, 0.0) >= 0 && Double.compare(value, 31.0) <= 0 && Double.compare(value, Math.floor(value)) == 0;
}
@Override
public boolean equals(Object obj)
{
if (this == obj)
{
return true;
}
if (!(obj instanceof DoubleSet))
{
return false;
}
DoubleSet other = (DoubleSet) obj;
return this.size() == other.size() && this.containsAll(other.toArray());
}
@Override
public int hashCode()
{
int result = 0;
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
result += (int) (Double.doubleToLongBits(value) ^ Double.doubleToLongBits(value) >>> 32);
zeroToThirtyOne &= ~(1 << (int) value);
}
if (this.table != null)
{
for (int i = 0; i < this.table.length; i++)
{
if (isNonSentinel(this.table[i]))
{
result += (int) (Double.doubleToLongBits(this.table[i]) ^ Double.doubleToLongBits(this.table[i]) >>> 32);
}
}
}
return result;
}
@Override
public String toString()
{
return this.makeString("[", ", ", "]");
}
public int size()
{
return this.occupiedWithData + this.zeroToThirtyOneOccupied;
}
public boolean isEmpty()
{
return this.size() == 0;
}
public boolean notEmpty()
{
return this.size() != 0;
}
public String makeString()
{
return this.makeString(", ");
}
public String makeString(String separator)
{
return this.makeString("", separator, "");
}
public String makeString(String start, String separator, String end)
{
Appendable stringBuilder = new StringBuilder();
this.appendString(stringBuilder, start, separator, end);
return stringBuilder.toString();
}
public void appendString(Appendable appendable)
{
this.appendString(appendable, ", ");
}
public void appendString(Appendable appendable, String separator)
{
this.appendString(appendable, "", separator, "");
}
public void appendString(Appendable appendable, String start, String separator, String end)
{
try
{
appendable.append(start);
int count = 0;
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (count > 0)
{
appendable.append(separator);
}
count++;
appendable.append(String.valueOf(value));
zeroToThirtyOne &= ~(1 << (int) value);
}
for (double value : this.table)
{
if (isNonSentinel(value))
{
if (count > 0)
{
appendable.append(separator);
}
count++;
appendable.append(String.valueOf(value));
}
}
appendable.append(end);
}
catch (IOException e)
{
throw new RuntimeException(e);
}
}
public boolean add(double element)
{
if (isBetweenZeroAndThirtyOne(element))
{
int initial = this.zeroToThirtyOne;
this.zeroToThirtyOne |= 1 << (int) element;
if (this.zeroToThirtyOne != initial)
{
this.zeroToThirtyOneOccupied++;
return true;
}
return false;
}
int index = this.probe(element);
if (Double.compare(this.table[index], element) == 0)
{
// element already present in set
return false;
}
if (this.copyOnWrite)
{
this.copyTable();
}
if (Double.compare(this.table[index], REMOVED) == 0)
{
--this.occupiedWithSentinels;
}
this.table[index] = element;
++this.occupiedWithData;
if (this.occupiedWithData > this.maxOccupiedWithData())
{
this.rehashAndGrow();
}
return true;
}
public boolean addAll(double... source)
{
int oldSize = this.size();
for (double item : source)
{
this.add(item);
}
return this.size() != oldSize;
}
public boolean addAll(DoubleIterable source)
{
if (source.isEmpty())
{
return false;
}
int oldSize = this.size();
if (source instanceof DoubleHashSet)
{
DoubleHashSet hashSet = (DoubleHashSet) source;
this.zeroToThirtyOne |= hashSet.zeroToThirtyOne;
this.zeroToThirtyOneOccupied = Integer.bitCount(this.zeroToThirtyOne);
for (double item : hashSet.table)
{
if (isNonSentinel(item))
{
this.add(item);
}
}
}
else
{
DoubleIterator iterator = source.doubleIterator();
while (iterator.hasNext())
{
double item = iterator.next();
this.add(item);
}
}
return this.size() != oldSize;
}
public boolean remove(double value)
{
if (isBetweenZeroAndThirtyOne(value))
{
int initial = this.zeroToThirtyOne;
this.zeroToThirtyOne &= ~(1 << (int) value);
if (this.zeroToThirtyOne == initial)
{
return false;
}
this.zeroToThirtyOneOccupied--;
return true;
}
int index = this.probe(value);
if (Double.compare(this.table[index], value) == 0)
{
if (this.copyOnWrite)
{
this.copyTable();
}
this.table[index] = REMOVED;
this.occupiedWithData--;
this.occupiedWithSentinels++;
if (this.occupiedWithSentinels > this.maxOccupiedWithSentinels())
{
this.rehash();
}
return true;
}
return false;
}
public boolean removeAll(DoubleIterable source)
{
if (source.isEmpty())
{
return false;
}
int oldSize = this.size();
if (source instanceof DoubleHashSet)
{
DoubleHashSet hashSet = (DoubleHashSet) source;
this.zeroToThirtyOne &= ~hashSet.zeroToThirtyOne;
this.zeroToThirtyOneOccupied = Integer.bitCount(this.zeroToThirtyOne);
for (double item : hashSet.table)
{
if (isNonSentinel(item))
{
this.remove(item);
}
}
}
else
{
DoubleIterator iterator = source.doubleIterator();
while (iterator.hasNext())
{
double item = iterator.next();
this.remove(item);
}
}
return this.size() != oldSize;
}
public boolean removeAll(double... source)
{
if (source.length == 0)
{
return false;
}
int oldSize = this.size();
for (double item : source)
{
this.remove(item);
}
return this.size() != oldSize;
}
public boolean retainAll(DoubleIterable source)
{
int oldSize = this.size();
final DoubleSet sourceSet = source instanceof DoubleSet ? (DoubleSet) source : source.toSet();
DoubleHashSet retained = this.select(new DoublePredicate()
{
public boolean accept(double value)
{
return sourceSet.contains(value);
}
});
if (retained.size() != oldSize)
{
this.zeroToThirtyOne = retained.zeroToThirtyOne;
this.zeroToThirtyOneOccupied = retained.zeroToThirtyOneOccupied;
this.occupiedWithData = retained.occupiedWithData;
this.occupiedWithSentinels = retained.occupiedWithSentinels;
this.table = retained.table;
return true;
}
return false;
}
public boolean retainAll(double... source)
{
return this.retainAll(DoubleHashSet.newSetWith(source));
}
public void clear()
{
this.zeroToThirtyOneOccupied = 0;
this.occupiedWithData = 0;
this.occupiedWithSentinels = 0;
this.zeroToThirtyOne = 0;
if (this.copyOnWrite)
{
this.table = new double[this.table.length];
this.copyOnWrite = false;
}
else
{
Arrays.fill(this.table, EMPTY);
}
}
public DoubleHashSet with(double element)
{
this.add(element);
return this;
}
public DoubleHashSet without(double element)
{
this.remove(element);
return this;
}
public DoubleHashSet withAll(DoubleIterable elements)
{
this.addAll(elements.toArray());
return this;
}
public DoubleHashSet withoutAll(DoubleIterable elements)
{
this.removeAll(elements);
return this;
}
public MutableDoubleSet asUnmodifiable()
{
return new UnmodifiableDoubleSet(this);
}
public MutableDoubleSet asSynchronized()
{
return new SynchronizedDoubleSet(this);
}
public ImmutableDoubleSet toImmutable()
{
if (this.size() == 0)
{
return DoubleSets.immutable.with();
}
if (this.size() == 1)
{
return DoubleSets.immutable.with(this.doubleIterator().next());
}
DoubleHashSet mutableSet = DoubleHashSet.newSetWith(this.toArray());
return new ImmutableDoubleHashSet(mutableSet.table, mutableSet.occupiedWithData, mutableSet.zeroToThirtyOne, mutableSet.zeroToThirtyOneOccupied);
}
public DoubleIterator doubleIterator()
{
return new InternalDoubleIterator();
}
public double[] toArray()
{
double[] array = new double[this.size()];
int j = 0;
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
array[j] = value;
j++;
zeroToThirtyOne &= ~(1 << (int) value);
}
for (int i = 0; i < this.table.length && j < this.size(); i++)
{
if (isNonSentinel(this.table[i]))
{
array[j] = this.table[i];
j++;
}
}
return array;
}
public boolean contains(double value)
{
if (isBetweenZeroAndThirtyOne(value))
{
int temp = this.zeroToThirtyOne;
return ((temp >>> (int) value) & 1) != 0;
}
return Double.compare(this.table[this.probe(value)], value) == 0;
}
public boolean containsAll(double... source)
{
for (double item : source)
{
if (!this.contains(item))
{
return false;
}
}
return true;
}
public boolean containsAll(DoubleIterable source)
{
for (DoubleIterator iterator = source.doubleIterator(); iterator.hasNext();)
{
if (!this.contains(iterator.next()))
{
return false;
}
}
return true;
}
public void forEach(DoubleProcedure procedure)
{
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
procedure.value(value);
zeroToThirtyOne &= ~(1 << (int) value);
}
for (double value : this.table)
{
if (isNonSentinel(value))
{
procedure.value(value);
}
}
}
public DoubleHashSet select(DoublePredicate predicate)
{
DoubleHashSet result = new DoubleHashSet();
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (predicate.accept(value))
{
result.add(value);
}
zeroToThirtyOne &= ~(1 << (int) value);
}
for (double value : this.table)
{
if (isNonSentinel(value))
{
if (predicate.accept(value))
{
result.add(value);
}
}
}
return result;
}
public MutableDoubleSet reject(DoublePredicate predicate)
{
DoubleHashSet result = new DoubleHashSet();
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (!predicate.accept(value))
{
result.add(value);
}
zeroToThirtyOne &= ~(1 << (int) value);
}
for (double value : this.table)
{
if (isNonSentinel(value))
{
if (!predicate.accept(value))
{
result.add(value);
}
}
}
return result;
}
public MutableSet collect(DoubleToObjectFunction function)
{
MutableSet target = UnifiedSet.newSet(this.size());
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
target.add(function.valueOf(value));
zeroToThirtyOne &= ~(1 << (int) value);
}
for (double value : this.table)
{
if (isNonSentinel(value))
{
target.add(function.valueOf(value));
}
}
return target;
}
public double detectIfNone(DoublePredicate predicate, double ifNone)
{
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (predicate.accept(value))
{
return value;
}
zeroToThirtyOne &= ~(1 << (int) value);
}
for (double value : this.table)
{
if (isNonSentinel(value))
{
if (predicate.accept(value))
{
return value;
}
}
}
return ifNone;
}
public int count(DoublePredicate predicate)
{
int count = 0;
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (predicate.accept(value))
{
count++;
}
zeroToThirtyOne &= ~(1 << (int) value);
}
for (double value : this.table)
{
if (isNonSentinel(value))
{
if (predicate.accept(value))
{
count++;
}
}
}
return count;
}
public boolean anySatisfy(DoublePredicate predicate)
{
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (predicate.accept(value))
{
return true;
}
zeroToThirtyOne &= ~(1 << (int) value);
}
for (double value : this.table)
{
if (isNonSentinel(value))
{
if (predicate.accept(value))
{
return true;
}
}
}
return false;
}
public boolean allSatisfy(DoublePredicate predicate)
{
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (!predicate.accept(value))
{
return false;
}
zeroToThirtyOne &= ~(1 << (int) value);
}
for (double value : this.table)
{
if (isNonSentinel(value))
{
if (!predicate.accept(value))
{
return false;
}
}
}
return true;
}
public boolean noneSatisfy(DoublePredicate predicate)
{
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (predicate.accept(value))
{
return false;
}
zeroToThirtyOne &= ~(1 << (int) value);
}
for (double value : this.table)
{
if (isNonSentinel(value))
{
if (predicate.accept(value))
{
return false;
}
}
}
return true;
}
public MutableDoubleList toList()
{
return DoubleArrayList.newList(this);
}
public MutableDoubleSet toSet()
{
return DoubleHashSet.newSet(this);
}
public MutableDoubleBag toBag()
{
return DoubleHashBag.newBag(this);
}
public LazyDoubleIterable asLazy()
{
return new LazyDoubleIterableAdapter(this);
}
public double sum()
{
double result = 0.0;
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
result += value;
zeroToThirtyOne &= ~(1 << (int) value);
}
for (double value : this.table)
{
if (isNonSentinel(value))
{
result += value;
}
}
return result;
}
public double max()
{
if (this.isEmpty())
{
throw new NoSuchElementException();
}
double max = 31 - Integer.numberOfLeadingZeros(this.zeroToThirtyOne);
boolean isMaxSet = this.zeroToThirtyOneOccupied != 0;
for (double value : this.table)
{
if (isNonSentinel(value) && (!isMaxSet || Double.compare(max, value) < 0))
{
max = value;
isMaxSet = true;
}
}
return max;
}
public double maxIfEmpty(double defaultValue)
{
if (this.isEmpty())
{
return defaultValue;
}
return this.max();
}
public double min()
{
if (this.isEmpty())
{
throw new NoSuchElementException();
}
double min = (double) Integer.numberOfTrailingZeros(this.zeroToThirtyOne);
boolean isMinSet = this.zeroToThirtyOneOccupied != 0;
for (double value : this.table)
{
if (isNonSentinel(value) && (!isMinSet || Double.compare(value, min) < 0))
{
min = value;
isMinSet = true;
}
}
return min;
}
public double minIfEmpty(double defaultValue)
{
if (this.isEmpty())
{
return defaultValue;
}
return this.min();
}
public double average()
{
if (this.isEmpty())
{
throw new ArithmeticException();
}
return this.sum() / (double) this.size();
}
public double median()
{
if (this.isEmpty())
{
throw new ArithmeticException();
}
double[] sortedArray = this.toSortedArray();
int middleIndex = sortedArray.length >> 1;
if (sortedArray.length > 1 && (sortedArray.length & 1) == 0)
{
double first = sortedArray[middleIndex];
double second = sortedArray[middleIndex - 1];
return (first + second) / 2.0;
}
return sortedArray[middleIndex];
}
public double[] toSortedArray()
{
double[] array = this.toArray();
Arrays.sort(array);
return array;
}
public MutableDoubleList toSortedList()
{
return DoubleArrayList.newList(this).sortThis();
}
public DoubleSet freeze()
{
if (this.size() == 0)
{
return DoubleSets.immutable.with();
}
if (this.size() == 1)
{
return DoubleSets.immutable.with(this.doubleIterator().next());
}
this.copyOnWrite = true;
return new ImmutableDoubleHashSet(this.table, this.occupiedWithData, this.zeroToThirtyOne, this.zeroToThirtyOneOccupied);
}
public void writeExternal(ObjectOutput out) throws IOException
{
out.writeInt(this.size());
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
out.writeDouble(value);
zeroToThirtyOne &= ~(1 << (int) value);
}
for (double value : this.table)
{
if (isNonSentinel(value))
{
out.writeDouble(value);
}
}
}
public void readExternal(ObjectInput in) throws IOException
{
int size = in.readInt();
for (int i = 0; i < size; i++)
{
this.add(in.readDouble());
}
}
public T injectInto(T injectedValue, ObjectDoubleToObjectFunction function)
{
T result = injectedValue;
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
result = function.valueOf(result, value);
zeroToThirtyOne &= ~(1 << (int) value);
}
for (double value : this.table)
{
if (isNonSentinel(value))
{
result = function.valueOf(result, value);
}
}
return result;
}
/**
* Rehashes every element in the set into a new backing table of the smallest possible size and eliminating removed sentinels.
*/
public void compact()
{
this.rehash(this.smallestPowerOfTwoGreaterThan(this.size()));
}
private void rehash()
{
this.rehash(this.table.length);
}
private void rehashAndGrow()
{
this.rehash(this.table.length << 1);
}
private void rehash(int newCapacity)
{
int oldLength = this.table.length;
double[] old = this.table;
this.allocateTable(newCapacity);
this.occupiedWithData = 0;
this.occupiedWithSentinels = 0;
for (int i = 0; i < oldLength; i++)
{
if (isNonSentinel(old[i]))
{
this.add(old[i]);
}
}
}
private void allocateTable(int sizeToAllocate)
{
this.table = new double[sizeToAllocate];
}
// exposed for testing
int probe(double element)
{
int index = this.spread(element);
double valueAtIndex = this.table[index];
if (Double.compare(valueAtIndex, element) == 0 || Double.compare(valueAtIndex, EMPTY) == 0)
{
return index;
}
int removedIndex = Double.compare(valueAtIndex, REMOVED) == 0 ? index : -1;
int nextIndex = index;
int probe = 17;
// loop until an empty slot is reached
while (true)
{
// Probe algorithm: 17 * n * (n+1) / 2 where n = number of collisions
nextIndex = (nextIndex + probe) & this.table.length - 1;
probe += 17;
if (Double.compare(this.table[nextIndex], element) == 0)
{
return nextIndex;
}
if (Double.compare(this.table[nextIndex], REMOVED) == 0)
{
if (removedIndex == -1)
{
removedIndex = nextIndex;
}
}
else if (Double.compare(this.table[nextIndex], EMPTY) == 0)
{
return removedIndex == -1 ? nextIndex : removedIndex;
}
}
}
// exposed for testing
int spread(double element)
{
long code = Double.doubleToLongBits(element);
code = ~code + (code << 18);
code = (code << 18) - code - 1;
code ^= code >>> 31;
code *= 21;
code += (code << 2) + (code << 4);
code ^= code >>> 11;
code += code << 6;
code ^= code >>> 22;
return (int) code & (this.table.length - 1);
}
private void copyTable()
{
this.copyOnWrite = false;
double[] copy = new double[this.table.length];
System.arraycopy(this.table, 0, copy, 0,
Math.min(this.table.length, this.table.length));
this.table = copy;
}
private int maxOccupiedWithData()
{
int capacity = this.table.length;
// need at least one free slot for open addressing
return Math.min(capacity - 1, capacity / OCCUPIED_DATA_RATIO);
}
private int maxOccupiedWithSentinels()
{
return this.table.length / OCCUPIED_SENTINEL_RATIO;
}
private static boolean isNonSentinel(double value)
{
return Double.compare(value, EMPTY) != 0 && Double.compare(value, REMOVED) != 0;
}
private static final class ImmutableDoubleHashSet implements ImmutableDoubleSet, Serializable
{
private static final long serialVersionUID = 1L;
private final double[] table;
private final int occupied;
// The 32 bits of this integer indicate whether the items 0.0 to 31.0 are present in the set.
private final int zeroToThirtyOne;
private final int zeroToThirtyOneOccupied;
private ImmutableDoubleHashSet(double[] table, int occupied, int zeroToThirtyOne, int zeroToThirtyOneOccupied)
{
this.checkOptimizedSize(occupied + zeroToThirtyOneOccupied);
this.occupied = occupied;
this.zeroToThirtyOneOccupied = zeroToThirtyOneOccupied;
this.zeroToThirtyOne = zeroToThirtyOne;
this.table = table;
}
private void checkOptimizedSize(int length)
{
if (length <= 1)
{
throw new IllegalArgumentException("Use DoubleSets.immutable.with() to instantiate an optimized collection");
}
}
public static ImmutableDoubleSet newSetWith(double... elements)
{
return DoubleHashSet.newSetWith(elements).toImmutable();
}
@Override
public boolean equals(Object obj)
{
if (this == obj)
{
return true;
}
if (!(obj instanceof DoubleSet))
{
return false;
}
DoubleSet other = (DoubleSet) obj;
return this.size() == other.size() && this.containsAll(other.toArray());
}
@Override
public int hashCode()
{
int result = 0;
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
result += (int) (Double.doubleToLongBits(value) ^ Double.doubleToLongBits(value) >>> 32);
zeroToThirtyOne &= ~(1 << (int) value);
}
if (this.table != null)
{
for (int i = 0; i < this.table.length; i++)
{
if (isNonSentinel(this.table[i]))
{
result += (int) (Double.doubleToLongBits(this.table[i]) ^ Double.doubleToLongBits(this.table[i]) >>> 32);
}
}
}
return result;
}
@Override
public String toString()
{
return this.makeString("[", ", ", "]");
}
public ImmutableDoubleSet newWith(double element)
{
return DoubleHashSet.newSet(this).with(element).toImmutable();
}
public ImmutableDoubleSet newWithout(double element)
{
return DoubleHashSet.newSet(this).without(element).toImmutable();
}
public ImmutableDoubleSet newWithAll(DoubleIterable elements)
{
return DoubleHashSet.newSet(this).withAll(elements).toImmutable();
}
public ImmutableDoubleSet newWithoutAll(DoubleIterable elements)
{
return DoubleHashSet.newSet(this).withoutAll(elements).toImmutable();
}
public int size()
{
return this.occupied + this.zeroToThirtyOneOccupied;
}
public boolean isEmpty()
{
return this.size() == 0;
}
public boolean notEmpty()
{
return this.size() != 0;
}
public String makeString()
{
return this.makeString(", ");
}
public String makeString(String separator)
{
return this.makeString("", separator, "");
}
public String makeString(String start, String separator, String end)
{
Appendable stringBuilder = new StringBuilder();
this.appendString(stringBuilder, start, separator, end);
return stringBuilder.toString();
}
public void appendString(Appendable appendable)
{
this.appendString(appendable, ", ");
}
public void appendString(Appendable appendable, String separator)
{
this.appendString(appendable, "", separator, "");
}
public void appendString(Appendable appendable, String start, String separator, String end)
{
try
{
appendable.append(start);
int count = 0;
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (count > 0)
{
appendable.append(separator);
}
count++;
appendable.append(String.valueOf(value));
zeroToThirtyOne &= ~(1 << (int) value);
}
for (double value : this.table)
{
if (isNonSentinel(value))
{
if (count > 0)
{
appendable.append(separator);
}
count++;
appendable.append(String.valueOf(value));
}
}
appendable.append(end);
}
catch (IOException e)
{
throw new RuntimeException(e);
}
}
public DoubleIterator doubleIterator()
{
return new InternalDoubleIterator();
}
public double[] toArray()
{
double[] array = new double[this.size()];
int j = 0;
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
array[j] = value;
j++;
zeroToThirtyOne &= ~(1 << (int) value);
}
for (int i = 0; i < this.table.length && j < this.size(); i++)
{
if (isNonSentinel(this.table[i]))
{
array[j] = this.table[i];
j++;
}
}
return array;
}
public boolean contains(double value)
{
if (isBetweenZeroAndThirtyOne(value))
{
int temp = this.zeroToThirtyOne;
return ((temp >>> (int) value) & 1) != 0;
}
return Double.compare(this.table[this.probe(value)], value) == 0;
}
public boolean containsAll(double... source)
{
for (double item : source)
{
if (!this.contains(item))
{
return false;
}
}
return true;
}
public boolean containsAll(DoubleIterable source)
{
for (DoubleIterator iterator = source.doubleIterator(); iterator.hasNext();)
{
if (!this.contains(iterator.next()))
{
return false;
}
}
return true;
}
public void forEach(DoubleProcedure procedure)
{
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
procedure.value(value);
zeroToThirtyOne &= ~(1 << (int) value);
}
for (double value : this.table)
{
if (isNonSentinel(value))
{
procedure.value(value);
}
}
}
public ImmutableDoubleSet select(DoublePredicate predicate)
{
DoubleHashSet result = new DoubleHashSet();
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (predicate.accept(value))
{
result.add(value);
}
zeroToThirtyOne &= ~(1 << (int) value);
}
for (double value : this.table)
{
if (isNonSentinel(value))
{
if (predicate.accept(value))
{
result.add(value);
}
}
}
return result.toImmutable();
}
public ImmutableDoubleSet reject(DoublePredicate predicate)
{
DoubleHashSet result = new DoubleHashSet();
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (!predicate.accept(value))
{
result.add(value);
}
zeroToThirtyOne &= ~(1 << (int) value);
}
for (double value : this.table)
{
if (isNonSentinel(value))
{
if (!predicate.accept(value))
{
result.add(value);
}
}
}
return result.toImmutable();
}
public ImmutableSet collect(DoubleToObjectFunction function)
{
MutableSet target = UnifiedSet.newSet(this.size());
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
target.add(function.valueOf(value));
zeroToThirtyOne &= ~(1 << (int) value);
}
for (double value : this.table)
{
if (isNonSentinel(value))
{
target.add(function.valueOf(value));
}
}
return target.toImmutable();
}
public double detectIfNone(DoublePredicate predicate, double ifNone)
{
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (predicate.accept(value))
{
return value;
}
zeroToThirtyOne &= ~(1 << (int) value);
}
for (double value : this.table)
{
if (isNonSentinel(value))
{
if (predicate.accept(value))
{
return value;
}
}
}
return ifNone;
}
public int count(DoublePredicate predicate)
{
int count = 0;
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (predicate.accept(value))
{
count++;
}
zeroToThirtyOne &= ~(1 << (int) value);
}
for (double value : this.table)
{
if (isNonSentinel(value))
{
if (predicate.accept(value))
{
count++;
}
}
}
return count;
}
public boolean anySatisfy(DoublePredicate predicate)
{
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (predicate.accept(value))
{
return true;
}
zeroToThirtyOne &= ~(1 << (int) value);
}
for (double value : this.table)
{
if (isNonSentinel(value))
{
if (predicate.accept(value))
{
return true;
}
}
}
return false;
}
public boolean allSatisfy(DoublePredicate predicate)
{
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (!predicate.accept(value))
{
return false;
}
zeroToThirtyOne &= ~(1 << (int) value);
}
for (double value : this.table)
{
if (isNonSentinel(value))
{
if (!predicate.accept(value))
{
return false;
}
}
}
return true;
}
public boolean noneSatisfy(DoublePredicate predicate)
{
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
if (predicate.accept(value))
{
return false;
}
zeroToThirtyOne &= ~(1 << (int) value);
}
for (double value : this.table)
{
if (isNonSentinel(value))
{
if (predicate.accept(value))
{
return false;
}
}
}
return true;
}
public MutableDoubleList toList()
{
return DoubleArrayList.newList(this);
}
public MutableDoubleSet toSet()
{
return DoubleHashSet.newSet(this);
}
public MutableDoubleBag toBag()
{
return DoubleHashBag.newBag(this);
}
public LazyDoubleIterable asLazy()
{
return new LazyDoubleIterableAdapter(this);
}
public double sum()
{
double result = 0.0;
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
result += value;
zeroToThirtyOne &= ~(1 << (int) value);
}
for (double value : this.table)
{
if (isNonSentinel(value))
{
result += value;
}
}
return result;
}
public double max()
{
if (this.isEmpty())
{
throw new NoSuchElementException();
}
double max = 31 - Integer.numberOfLeadingZeros(this.zeroToThirtyOne);
boolean isMaxSet = this.zeroToThirtyOneOccupied != 0;
for (double value : this.table)
{
if (isNonSentinel(value) && (!isMaxSet || Double.compare(max, value) < 0))
{
max = value;
isMaxSet = true;
}
}
return max;
}
public double maxIfEmpty(double defaultValue)
{
if (this.isEmpty())
{
return defaultValue;
}
return this.max();
}
public double min()
{
if (this.isEmpty())
{
throw new NoSuchElementException();
}
double min = (double) Integer.numberOfTrailingZeros(this.zeroToThirtyOne);
boolean isMinSet = this.zeroToThirtyOneOccupied != 0;
for (double value : this.table)
{
if (isNonSentinel(value) && (!isMinSet || Double.compare(value, min) < 0))
{
min = value;
isMinSet = true;
}
}
return min;
}
public double minIfEmpty(double defaultValue)
{
if (this.isEmpty())
{
return defaultValue;
}
return this.min();
}
public double average()
{
if (this.isEmpty())
{
throw new ArithmeticException();
}
return this.sum() / (double) this.size();
}
public double median()
{
if (this.isEmpty())
{
throw new ArithmeticException();
}
double[] sortedArray = this.toSortedArray();
int middleIndex = sortedArray.length >> 1;
if (sortedArray.length > 1 && (sortedArray.length & 1) == 0)
{
double first = sortedArray[middleIndex];
double second = sortedArray[middleIndex - 1];
return (first + second) / 2.0;
}
return sortedArray[middleIndex];
}
public double[] toSortedArray()
{
double[] array = this.toArray();
Arrays.sort(array);
return array;
}
public MutableDoubleList toSortedList()
{
return DoubleArrayList.newList(this).sortThis();
}
public T injectInto(T injectedValue, ObjectDoubleToObjectFunction function)
{
T result = injectedValue;
int zeroToThirtyOne = this.zeroToThirtyOne;
while (zeroToThirtyOne != 0)
{
double value = (double) Integer.numberOfTrailingZeros(zeroToThirtyOne);
result = function.valueOf(result, value);
zeroToThirtyOne &= ~(1 << (int) value);
}
for (double value : this.table)
{
if (isNonSentinel(value))
{
result = function.valueOf(result, value);
}
}
return result;
}
public DoubleSet freeze()
{
return this;
}
public ImmutableDoubleSet toImmutable()
{
return this;
}
private Object writeReplace()
{
return new ImmutableDoubleSetSerializationProxy(this);
}
// exposed for testing
int probe(double element)
{
int index = this.spread(element);
double valueAtIndex = this.table[index];
if (Double.compare(valueAtIndex, element) == 0 || Double.compare(valueAtIndex, EMPTY) == 0)
{
return index;
}
int removedIndex = Double.compare(valueAtIndex, REMOVED) == 0 ? index : -1;
int nextIndex = index;
int probe = 17;
// loop until an empty slot is reached
while (true)
{
// Probe algorithm: 17 * n * (n+1) / 2 where n = number of collisions
nextIndex = (nextIndex + probe) & this.table.length - 1;
probe += 17;
if (Double.compare(this.table[nextIndex], element) == 0)
{
return nextIndex;
}
if (Double.compare(this.table[nextIndex], REMOVED) == 0)
{
if (removedIndex == -1)
{
removedIndex = nextIndex;
}
}
else if (Double.compare(this.table[nextIndex], EMPTY) == 0)
{
return removedIndex == -1 ? nextIndex : removedIndex;
}
}
}
// exposed for testing
int spread(double element)
{
long code = Double.doubleToLongBits(element);
code = ~code + (code << 18);
code = (code << 18) - code - 1;
code ^= code >>> 31;
code *= 21;
code += (code << 2) + (code << 4);
code ^= code >>> 11;
code += code << 6;
code ^= code >>> 22;
return (int) code & (this.table.length - 1);
}
private class InternalDoubleIterator implements DoubleIterator
{
private int count;
private int position;
private double zeroToThirtyOne;
public boolean hasNext()
{
return this.count < ImmutableDoubleHashSet.this.size();
}
public double next()
{
if (!this.hasNext())
{
throw new NoSuchElementException("next() called, but the iterator is exhausted");
}
this.count++;
while (this.zeroToThirtyOne < 32)
{
if (ImmutableDoubleHashSet.this.contains(this.zeroToThirtyOne))
{
double result = this.zeroToThirtyOne;
this.zeroToThirtyOne++;
return result;
}
this.zeroToThirtyOne++;
}
double[] table = ImmutableDoubleHashSet.this.table;
while (!isNonSentinel(table[this.position]))
{
this.position++;
}
double result = table[this.position];
this.position++;
return result;
}
}
}
private class InternalDoubleIterator implements DoubleIterator
{
private int count;
private int position;
private double zeroToThirtyOne;
public boolean hasNext()
{
return this.count < DoubleHashSet.this.size();
}
public double next()
{
if (!this.hasNext())
{
throw new NoSuchElementException("next() called, but the iterator is exhausted");
}
this.count++;
while (this.zeroToThirtyOne < 32)
{
if (DoubleHashSet.this.contains(this.zeroToThirtyOne))
{
double result = this.zeroToThirtyOne;
this.zeroToThirtyOne++;
return result;
}
this.zeroToThirtyOne++;
}
double[] table = DoubleHashSet.this.table;
while (!isNonSentinel(table[this.position]))
{
this.position++;
}
double result = table[this.position];
this.position++;
return result;
}
}
}
© 2015 - 2025 Weber Informatics LLC | Privacy Policy