Class IntArraySet

java.lang.Object
net.sf.saxon.sort.IntArraySet
All Implemented Interfaces:
Serializable
public class IntArraySet extends Object implements 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.

Author:
Michael Kay
See Also:

  • Constructor Details

    • 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 Details

    • 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:
      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 String toString()
      Overrides:
      toString in class Object

    • equals

      public boolean equals(Object other)
      Test whether this set has exactly the same members as another set
      Overrides:
      equals in class Object

    • hashCode

      public int hashCode()
      Construct a hash key that supports the equals() test
      Overrides:
      hashCode in class Object