JavaEWAH 1.2.3 · com.googlecode.javaewah.datastructure.BitSet

Modifier and Type	Field and Description
pack-priv long[]	data
pack-priv static final long	serialVersionUID

Access	Constructor and Description
public	BitSet(final int the size in bits sizeInBits) Construct a bitset with the specified number of bits (initially all false).
public	BitSet()

Method Summary

Modifier and Type	Method and Description
public void	and(WordArray other bitset bs) Compute bitwise AND.
public int	Returns: cardinality andcardinality(WordArray other bitset bs) Compute cardinality of bitwise AND.
public void	andNot(WordArray other bitset bs) Compute bitwise AND NOT.
public int	Returns: cardinality andNotcardinality(WordArray other bitset bs) Compute cardinality of bitwise AND NOT.
public static BitSet	Returns: the bitmap bitmapOf(int... list of set bit positions setBits) Return a bitmap with the bit set to true at the given positions.
public int	Returns: the number of bits cardinality() Compute the number of bits set to 1
public void	clear() Reset all bits to false.
public void	clear(int location of the bit index) Set the bit to false.
public void	clear(int location of the first bit to set to zero start, int location of the last bit to set to zero (not included) end) Set the bits in the range of indexes to false.
public BitSet	clone() Overrides java.lang.Object.clone. Creates and returns a copy of this object.
public void	deserialize(DataInput the DataInput stream in) Deserialize.
public boolean	Returns: true if no set bit is found empty() Check whether a bitset contains a set bit.
public boolean	equals(Object the reference object with which to compare. o) Overrides java.lang.Object.equals. Indicates whether some other object is "equal to" this one.
public void	flip(final int index of the bit i) Flip the bit.
public void	flip(int location of the first bit start, int location of the last bit (not included) end) Flip the bits in the range of indexes.
public boolean	Returns: value of the bit get(final int index i) Get the value of the bit.
public int	getNumberOfWords() Implements com.googlecode.javaewah.datastructure.WordArray.getNumberOfWords. Get the total number of words contained in this data structure.
public long	getWord(int the index index) Implements com.googlecode.javaewah.datastructure.WordArray.getWord. Get the word at the given index
public int	hashCode() Overrides java.lang.Object.hashCode. Returns a hash code value for this object.
public boolean	Returns: true if they have a non-empty intersection (result of AND) intersects(WordArray other bitset bs) Checks whether two bitsets intersect.
public IntIterator	Returns: an iterator intIterator() Iterate over the set bits
public Iterator<Integer>	iterator() Implements java.lang.Iterable.iterator. Returns an iterator over elements of type `T`.
public int	Returns: next set bit or -1 nextSetBit(final int current set bit i) Usage: for(int i=bs.nextSetBit(0); i>=0; i=bs.nextSetBit(i+1)) { operate on index i here }
public int	Returns: next unset bit or -1 nextUnsetBit(final int current unset bit i) Usage: for(int i=bs.nextUnsetBit(0); i>=0; i=bs.nextUnsetBit(i+1)) { operate on index i here }
public void	or(WordArray other bitset bs) Compute bitwise OR.
public int	Returns: cardinality orcardinality(WordArray other bitset bs) Compute cardinality of bitwise OR.
public void	readExternal(ObjectInput the stream to read data from in order to restore the object in) Implements java.io.Externalizable.readExternal. The object implements the readExternal method to restore its contents by calling the methods of DataInput for primitive types and readObject for objects, strings and arrays.
public void	removeWord(int index of the word to be removed. i) Remove a word.
public void	resize(int new number of bits sizeInBits) Resize the bitset
public void	serialize(DataOutput the DataOutput stream out) Serialize.
public void	set(final int index of the bit i) Set to true.
public void	set(final int index i, final boolean value of the bit b) Set to some value.
public void	set(int location of the first bit start, int location of the last bit (not included) end) Set the bits in the range of indexes true.
public void	set(int location of the first bit start, int location of the last bit (not included) end, boolean Boolean value v) Set the bits in the range of indexes to the specified Boolean value.
public int	Returns: the size in bits. size() Query the size
public String	toString() Overrides java.lang.Object.toString. Returns a string representation of the object.
public void	trim() Recovers wasted memory
public void	unset(final int index of the bit i) Set to false
public IntIterator	Returns: an iterator unsetIntIterator() Iterate over the unset bits
public void	writeExternal(ObjectOutput the stream to write the object to out) Implements java.io.Externalizable.writeExternal. The object implements the writeExternal method to save its contents by calling the methods of DataOutput for its primitive values or calling the writeObject method of ObjectOutput for objects, strings, and arrays.
public void	xor(WordArray other bitset bs) Compute bitwise XOR.
public int	Returns: cardinality xorcardinality(WordArray other bitset bs) Compute cardinality of bitwise XOR.

Inherited from java.lang.Object:: finalize getClass notify notifyAll wait wait wait

data	back to summary
pack-priv long[] data

serialVersionUID	back to summary
pack-priv static final long serialVersionUID

BitSet	back to summary
public BitSet(final int sizeInBits) Construct a bitset with the specified number of bits (initially all false). The number of bits is rounded up to the nearest multiple of 64. Parameters sizeInBits:int the size in bits

BitSet	back to summary
public BitSet()

Method Detail

and	back to summary
public void and(WordArray bs) Compute bitwise AND. Parameters bs:WordArray other bitset

and

back to summary

public void and(WordArray bs)

Compute bitwise AND.

Parameters

bs:WordArray: other bitset

andcardinality	back to summary
public int andcardinality(WordArray bs) Compute cardinality of bitwise AND. The current bitmap is modified. Consider calling trim() to recover wasted memory afterward. Parameters bs:WordArray other bitset Returns:int cardinality

andcardinality

back to summary

public int andcardinality(WordArray bs)

Compute cardinality of bitwise AND. The current bitmap is modified. Consider calling trim() to recover wasted memory afterward.

Parameters

bs:WordArray: other bitset

Returns:int

cardinality

andNot	back to summary
public void andNot(WordArray bs) Compute bitwise AND NOT. The current bitmap is modified. Consider calling trim() to recover wasted memory afterward. Parameters bs:WordArray other bitset

andNot

back to summary

public void andNot(WordArray bs)

Compute bitwise AND NOT. The current bitmap is modified. Consider calling trim() to recover wasted memory afterward.

Parameters

bs:WordArray: other bitset

andNotcardinality	back to summary
public int andNotcardinality(WordArray bs) Compute cardinality of bitwise AND NOT. Parameters bs:WordArray other bitset Returns:int cardinality

andNotcardinality

back to summary

public int andNotcardinality(WordArray bs)

Compute cardinality of bitwise AND NOT.

Parameters

bs:WordArray: other bitset

Returns:int

cardinality

bitmapOf	back to summary
public static BitSet bitmapOf(int... setBits) Return a bitmap with the bit set to true at the given positions. (This is a convenience method.) Parameters setBits:int[] list of set bit positions Returns:BitSet the bitmap

bitmapOf

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public static BitSet bitmapOf(int... setBits)

Return a bitmap with the bit set to true at the given positions. (This is a convenience method.)

Parameters

setBits:int[]: list of set bit positions

Returns:BitSet

the bitmap

cardinality	back to summary
public int cardinality() Compute the number of bits set to 1 Returns:int the number of bits

cardinality

back to summary

public int cardinality()

Compute the number of bits set to 1

Returns:int: the number of bits

clear	back to summary
public void clear() Reset all bits to false. This might be wasteful: a better approach is to create a new empty bitmap.

clear back to summary

clear	back to summary
public void clear(int index) Set the bit to false. See `unset(int)` Parameters index:int location of the bit

public void clear(int index)

Set the bit to false. See unset(int)

Parameters

index:int: location of the bit

clear	back to summary
public void clear(int start, int end) Set the bits in the range of indexes to false. This might throw an exception if size() is insufficient, consider calling resize(). Parameters start:int location of the first bit to set to zero end:int location of the last bit to set to zero (not included)

clear

back to summary

public void clear(int start, int end)

Set the bits in the range of indexes to false. This might throw an exception if size() is insufficient, consider calling resize().

Parameters

start:int: location of the first bit to set to zero
end:int: location of the last bit to set to zero (not included)

clone back to summary

clone	back to summary
public BitSet clone() Overrides java.lang.Object.clone. Doc from java.lang.Object.clone. Creates and returns a copy of this object. The precise meaning of "copy" may depend on the class of the object. The general intent is that, for any object `x`, the expression: x.clone() != x will be true, and that the expression: x.clone().getClass() == x.getClass() will be `true`, but these are not absolute requirements. While it is typically the case that: x.clone().equals(x) will be `true`, this is not an absolute requirement. By convention, the returned object should be obtained by calling `super.clone`. If a class and all of its superclasses (except `Object`) obey this convention, it will be the case that `x.clone().getClass() == x.getClass()`. By convention, the object returned by this method should be independent of this object (which is being cloned). To achieve this independence, it may be necessary to modify one or more fields of the object returned by `super.clone` before returning it. Typically, this means copying any mutable objects that comprise the internal "deep structure" of the object being cloned and replacing the references to these objects with references to the copies. If a class contains only primitive fields or references to immutable objects, then it is usually the case that no fields in the object returned by `super.clone` need to be modified. Returns:BitSet a clone of this instance. Annotations @Override

public BitSet clone()

Overrides java.lang.Object.clone.

Doc from java.lang.Object.clone.

Creates and returns a copy of this object. The precise meaning of "copy" may depend on the class of the object. The general intent is that, for any object x, the expression:

x.clone() != x

will be true, and that the expression:

x.clone().getClass() == x.getClass()

will be true, but these are not absolute requirements. While it is typically the case that:

x.clone().equals(x)

will be true, this is not an absolute requirement.

By convention, the returned object should be obtained by calling super.clone. If a class and all of its superclasses (except Object) obey this convention, it will be the case that x.clone().getClass() == x.getClass().

By convention, the object returned by this method should be independent of this object (which is being cloned). To achieve this independence, it may be necessary to modify one or more fields of the object returned by super.clone before returning it. Typically, this means copying any mutable objects that comprise the internal "deep structure" of the object being cloned and replacing the references to these objects with references to the copies. If a class contains only primitive fields or references to immutable objects, then it is usually the case that no fields in the object returned by super.clone need to be modified.

Returns:BitSet

a clone of this instance.

Annotations

@Override

deserialize	back to summary
public void deserialize(DataInput in) throws IOException Deserialize. Parameters in:DataInput the DataInput stream Exceptions IOException: Signals that an I/O exception has occurred.

deserialize

back to summary

public void deserialize(DataInput in) throws IOException

Deserialize.

Parameters

in:DataInput: the DataInput stream

Exceptions

IOException:: Signals that an I/O exception has occurred.

empty	back to summary
public boolean empty() Check whether a bitset contains a set bit. Returns:boolean true if no set bit is found

empty

back to summary

public boolean empty()

Check whether a bitset contains a set bit.

Returns:boolean: true if no set bit is found

equals back to summary

equals	back to summary
public boolean equals(Object o) Overrides java.lang.Object.equals. Doc from java.lang.Object.equals. Indicates whether some other object is "equal to" this one. The `equals` method implements an equivalence relation on non-null object references: It is reflexive: for any non-null reference value `x`, `x.equals(x)` should return `true`. It is symmetric: for any non-null reference values `x` and `y`, `x.equals(y)` should return `true` if and only if `y.equals(x)` returns `true`. It is transitive: for any non-null reference values `x`, `y`, and `z`, if `x.equals(y)` returns `true` and `y.equals(z)` returns `true`, then `x.equals(z)` should return `true`. It is consistent: for any non-null reference values `x` and `y`, multiple invocations of `x.equals(y)` consistently return `true` or consistently return `false`, provided no information used in `equals` comparisons on the objects is modified. For any non-null reference value `x`, `x.equals(null)` should return `false`. An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes. Parameters o:Object the reference object with which to compare. Returns:boolean `true` if this object is the same as the obj argument; `false` otherwise. Annotations @Override

public boolean equals(Object o)

Overrides java.lang.Object.equals.

Doc from java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

It is reflexive: for any non-null reference value x, x.equals(x) should return true.
It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Parameters

o:Object: the reference object with which to compare.

Returns:boolean

true if this object is the same as the obj argument; false otherwise.

Annotations

@Override

flip	back to summary
public void flip(final int i) Flip the bit. This might throw an exception if size() is insufficient, consider calling resize(). Parameters i:int index of the bit

flip

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public void flip(final int i)

Flip the bit. This might throw an exception if size() is insufficient, consider calling resize().

Parameters

i:int: index of the bit

flip	back to summary
public void flip(int start, int end) Flip the bits in the range of indexes. This might throw an exception if size() is insufficient, consider calling resize(). Parameters start:int location of the first bit end:int location of the last bit (not included)

flip

back to summary

public void flip(int start, int end)

Flip the bits in the range of indexes. This might throw an exception if size() is insufficient, consider calling resize().

Parameters

start:int: location of the first bit
end:int: location of the last bit (not included)

get	back to summary
public boolean get(final int i) Get the value of the bit. This might throw an exception if size() is insufficient, consider calling resize(). Parameters i:int index Returns:boolean value of the bit

get

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public boolean get(final int i)

Get the value of the bit. This might throw an exception if size() is insufficient, consider calling resize().

Parameters

i:int: index

Returns:boolean

value of the bit

getNumberOfWords	back to summary
public int getNumberOfWords() Implements com.googlecode.javaewah.datastructure.WordArray.getNumberOfWords. Doc from com.googlecode.javaewah.datastructure.WordArray.getNumberOfWords. Get the total number of words contained in this data structure. Returns:int the number Annotations @Override

getNumberOfWords

back to summary

public int getNumberOfWords()

Implements com.googlecode.javaewah.datastructure.WordArray.getNumberOfWords.

Doc from com.googlecode.javaewah.datastructure.WordArray.getNumberOfWords.

Get the total number of words contained in this data structure.

Returns:int

the number

Annotations

@Override

getWord	back to summary
public long getWord(int index) Implements com.googlecode.javaewah.datastructure.WordArray.getWord. Doc from com.googlecode.javaewah.datastructure.WordArray.getWord. Get the word at the given index Parameters index:int the index Returns:long the word Annotations @Override

getWord

back to summary

public long getWord(int index)

Implements com.googlecode.javaewah.datastructure.WordArray.getWord.

Doc from com.googlecode.javaewah.datastructure.WordArray.getWord.

Get the word at the given index

Parameters

index:int: the index

Returns:long

the word

Annotations

@Override

hashCode back to summary

hashCode	back to summary
public int hashCode() Overrides java.lang.Object.hashCode. Doc from java.lang.Object.hashCode. Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by `java.util.HashMap`. The general contract of `hashCode` is: Whenever it is invoked on the same object more than once during an execution of a Java application, the `hashCode` method must consistently return the same integer, provided no information used in `equals` comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application. If two objects are equal according to the `equals` method, then calling the `hashCode` method on each of the two objects must produce the same integer result. It is not required that if two objects are unequal according to the `equals` method, then calling the `hashCode` method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables. Returns:int a hash code value for this object Annotations @Override

public int hashCode()

Overrides java.lang.Object.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.

Returns:int

a hash code value for this object

Annotations

@Override

intersects	back to summary
public boolean intersects(WordArray bs) Checks whether two bitsets intersect. Parameters bs:WordArray other bitset Returns:boolean true if they have a non-empty intersection (result of AND)

intersects

back to summary

public boolean intersects(WordArray bs)

Checks whether two bitsets intersect.

Parameters

bs:WordArray: other bitset

Returns:boolean

true if they have a non-empty intersection (result of AND)

intIterator	back to summary
public IntIterator intIterator() Iterate over the set bits Returns:IntIterator an iterator

intIterator

back to summary

public IntIterator intIterator()

Iterate over the set bits

Returns:IntIterator: an iterator

iterator back to summary

iterator	back to summary
public Iterator<Integer> iterator() Implements java.lang.Iterable.iterator. Doc from java.lang.Iterable.iterator. Returns an iterator over elements of type `T`. Returns:Iterator<Integer> an Iterator. Annotations @Override

public Iterator<Integer> iterator()

Implements java.lang.Iterable.iterator.

Doc from java.lang.Iterable.iterator.

Returns an iterator over elements of type T.

Returns:Iterator<Integer>

an Iterator.

Annotations

@Override

nextSetBit	back to summary
public int nextSetBit(final int i) Usage: for(int i=bs.nextSetBit(0); i>=0; i=bs.nextSetBit(i+1)) { operate on index i here } Parameters i:int current set bit Returns:int next set bit or -1

nextSetBit

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public int nextSetBit(final int i)

Usage: for(int i=bs.nextSetBit(0); i>=0; i=bs.nextSetBit(i+1)) { operate on index i here }

Parameters

i:int: current set bit

Returns:int

next set bit or -1

nextUnsetBit	back to summary
public int nextUnsetBit(final int i) Usage: for(int i=bs.nextUnsetBit(0); i>=0; i=bs.nextUnsetBit(i+1)) { operate on index i here } Parameters i:int current unset bit Returns:int next unset bit or -1

nextUnsetBit

back to summary

public int nextUnsetBit(final int i)

Usage: for(int i=bs.nextUnsetBit(0); i>=0; i=bs.nextUnsetBit(i+1)) { operate on index i here }

Parameters

i:int: current unset bit

Returns:int

next unset bit or -1

or	back to summary
public void or(WordArray bs) Compute bitwise OR. The current bitmap is modified. Consider calling trim() to recover wasted memory afterward. Parameters bs:WordArray other bitset

back to summary

public void or(WordArray bs)

Compute bitwise OR. The current bitmap is modified. Consider calling trim() to recover wasted memory afterward.

Parameters

bs:WordArray: other bitset

orcardinality	back to summary
public int orcardinality(WordArray bs) Compute cardinality of bitwise OR. BitSets are not modified. Parameters bs:WordArray other bitset Returns:int cardinality

orcardinality

back to summary

public int orcardinality(WordArray bs)

Compute cardinality of bitwise OR. BitSets are not modified.

Parameters

bs:WordArray: other bitset

Returns:int

cardinality

readExternal	back to summary
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException Implements java.io.Externalizable.readExternal. Doc from java.io.Externalizable.readExternal. The object implements the readExternal method to restore its contents by calling the methods of DataInput for primitive types and readObject for objects, strings and arrays. The readExternal method must read the values in the same sequence and with the same types as were written by writeExternal. Parameters in:ObjectInput the stream to read data from in order to restore the object Annotations @Override Exceptions IOException: if I/O errors occur ClassNotFoundException: If the class for an object being restored cannot be found.

readExternal

back to summary

public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException

Implements java.io.Externalizable.readExternal.

Doc from java.io.Externalizable.readExternal.

The object implements the readExternal method to restore its contents by calling the methods of DataInput for primitive types and readObject for objects, strings and arrays. The readExternal method must read the values in the same sequence and with the same types as were written by writeExternal.

Parameters

in:ObjectInput: the stream to read data from in order to restore the object

Annotations

@Override

Exceptions

IOException:: if I/O errors occur
ClassNotFoundException:: If the class for an object being restored cannot be found.

removeWord	back to summary
public void removeWord(int i) Remove a word. Parameters i:int index of the word to be removed.

removeWord

back to summary

public void removeWord(int i)

Remove a word.

Parameters

i:int: index of the word to be removed.

resize	back to summary
public void resize(int sizeInBits) Resize the bitset Parameters sizeInBits:int new number of bits

resize

back to summary

public void resize(int sizeInBits)

Resize the bitset

Parameters

sizeInBits:int: new number of bits

serialize	back to summary
public void serialize(DataOutput out) throws IOException Serialize. The current bitmap is not modified. Parameters out:DataOutput the DataOutput stream Exceptions IOException: Signals that an I/O exception has occurred.

serialize

back to summary

public void serialize(DataOutput out) throws IOException

Serialize. The current bitmap is not modified.

Parameters

out:DataOutput: the DataOutput stream

Exceptions

IOException:: Signals that an I/O exception has occurred.

set	back to summary
public void set(final int i) Set to true. This might throw an exception if size() is insufficient, consider calling resize(). Parameters i:int index of the bit

set

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public void set(final int i)

Set to true. This might throw an exception if size() is insufficient, consider calling resize().

Parameters

i:int: index of the bit

set	back to summary
public void set(final int i, final boolean b) Set to some value. This might throw an exception if size() is insufficient, consider calling resize(). Parameters i:int index b:boolean value of the bit

set

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public void set(final int i, final boolean b)

Set to some value. This might throw an exception if size() is insufficient, consider calling resize().

Parameters

i:int: index
b:boolean: value of the bit

set	back to summary
public void set(int start, int end) Set the bits in the range of indexes true. This might throw an exception if size() is insufficient, consider calling resize(). Parameters start:int location of the first bit end:int location of the last bit (not included)

set

back to summary

public void set(int start, int end)

Set the bits in the range of indexes true. This might throw an exception if size() is insufficient, consider calling resize().

Parameters

start:int: location of the first bit
end:int: location of the last bit (not included)

set	back to summary
public void set(int start, int end, boolean v) Set the bits in the range of indexes to the specified Boolean value. This might throw an exception if size() is insufficient, consider calling resize(). Parameters start:int location of the first bit end:int location of the last bit (not included) v:boolean Boolean value

set

back to summary

public void set(int start, int end, boolean v)

Set the bits in the range of indexes to the specified Boolean value. This might throw an exception if size() is insufficient, consider calling resize().

Parameters

start:int: location of the first bit
end:int: location of the last bit (not included)
v:boolean: Boolean value

size	back to summary
public int size() Query the size Returns:int the size in bits.

size

back to summary

public int size()

Query the size

Returns:int: the size in bits.

toString back to summary

toString	back to summary
public String toString() Overrides java.lang.Object.toString. Doc from java.lang.Object.toString. Returns a string representation of the object. Satisfying this method's contract implies a non-`null` result must be returned. Returns:String a string representation of the object Annotations @Override

public String toString()

Overrides java.lang.Object.toString.

Doc from java.lang.Object.toString.

Returns a string representation of the object. Satisfying this method's contract implies a non-null result must be returned.

Returns:String

a string representation of the object

Annotations

@Override

trim	back to summary
public void trim() Recovers wasted memory

unset	back to summary
public void unset(final int i) Set to false Parameters i:int index of the bit

unset

back to summary

public void unset(final int i)

Set to false

Parameters

i:int: index of the bit

unsetIntIterator	back to summary
public IntIterator unsetIntIterator() Iterate over the unset bits Returns:IntIterator an iterator

unsetIntIterator

back to summary

public IntIterator unsetIntIterator()

Iterate over the unset bits

Returns:IntIterator: an iterator

writeExternal	back to summary
public void writeExternal(ObjectOutput out) throws IOException Implements java.io.Externalizable.writeExternal. Doc from java.io.Externalizable.writeExternal. The object implements the writeExternal method to save its contents by calling the methods of DataOutput for its primitive values or calling the writeObject method of ObjectOutput for objects, strings, and arrays. Parameters out:ObjectOutput the stream to write the object to Annotations @Override Exceptions IOException: Includes any I/O exceptions that may occur

writeExternal

back to summary

public void writeExternal(ObjectOutput out) throws IOException

Implements java.io.Externalizable.writeExternal.

Doc from java.io.Externalizable.writeExternal.

The object implements the writeExternal method to save its contents by calling the methods of DataOutput for its primitive values or calling the writeObject method of ObjectOutput for objects, strings, and arrays.

Parameters

out:ObjectOutput: the stream to write the object to

Annotations

@Override

Exceptions

IOException:: Includes any I/O exceptions that may occur

xor	back to summary
public void xor(WordArray bs) Compute bitwise XOR. The current bitmap is modified. Consider calling trim() to recover wasted memory afterward. Parameters bs:WordArray other bitset

xor

back to summary

public void xor(WordArray bs)

Compute bitwise XOR. The current bitmap is modified. Consider calling trim() to recover wasted memory afterward.

Parameters

bs:WordArray: other bitset

xorcardinality	back to summary
public int xorcardinality(WordArray bs) Compute cardinality of bitwise XOR. BitSets are not modified. Parameters bs:WordArray other bitset Returns:int cardinality

xorcardinality

back to summary

public int xorcardinality(WordArray bs)

Compute cardinality of bitwise XOR. BitSets are not modified.

Parameters

bs:WordArray: other bitset

Returns:int

cardinality

public Class BitSet

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail