net.sf.saxon.sort
Class IntArraySet

java.lang.Object
  net.sf.saxon.sort.IntArraySet

All Implemented Interfaces:

java.io.Serializable

public class IntArraySet

extends java.lang.Object

implements java.io.Serializable

Set of int values. This class is modelled on the java.net.Set interface, but it does not implement this interface, because the set members are int's rather than Objects. It does implement the same interface as IntHashSet, although this is currently not defined as an explicit interface.

This implementation of a set of integers is optimized to use very little storage and to provide fast comparison of two sets. The equals() method determines whether two sets contain the same integers.

Not thread safe.

See Also:

Serialized Form

Constructor Summary

IntArraySet()
Create an empty set

IntArraySet(IntArraySet input)
Create one IntArraySet as a copy of another

IntArraySet(IntHashSet input)
Create a set containing integers from the specified IntHashSet

Method Summary

boolean	add(int value) Add an integer to the set
void	clear()
boolean	contains(int value)
boolean	equals(java.lang.Object other) Test whether this set has exactly the same members as another set
int	getFirst() Get the first value in the set.
int[]	getValues()
int	hashCode() Construct a hash key that supports the equals() test
boolean	isEmpty()
IntIterator	iterator() Get an iterator over the values
static IntArraySet	make(int[] in, int size)
boolean	remove(int value)
int	size()
java.lang.String	toString()
IntArraySet	union(IntArraySet other) Form a new set that is the union of this set with another set.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

IntArraySet

public IntArraySet()

Create an empty set

IntArraySet

public IntArraySet(IntHashSet input)

Create a set containing integers from the specified IntHashSet

IntArraySet

public IntArraySet(IntArraySet input)

Create one IntArraySet as a copy of another

Method Detail

clear

public void clear()

size

public int size()

isEmpty

public boolean isEmpty()

getValues

public int[] getValues()

contains

public boolean contains(int value)

remove

public boolean remove(int value)

add

public boolean add(int value)

Add an integer to the set

Parameters:

value - the integer to be added

Returns:

true if the integer was added, false if it was already present

getFirst

public int getFirst()

Get the first value in the set.

Throws:

java.lang.ArrayIndexOutOfBoundsException - if the set is empty

iterator

public IntIterator iterator()

Get an iterator over the values

union

public IntArraySet union(IntArraySet other)

Form a new set that is the union of this set with another set.

make

public static IntArraySet make(int[] in,
                               int size)

toString

public java.lang.String toString()

equals

public boolean equals(java.lang.Object other)

Test whether this set has exactly the same members as another set

hashCode

public int hashCode()

Construct a hash key that supports the equals() test