com.numericalmethod.suanshu.analysis.function.tuple

Class BinaryRelation

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractSet<E>

java.util.TreeSet<Pair>

com.numericalmethod.suanshu.analysis.function.tuple.BinaryRelation

All Implemented Interfaces:

OrderedPairs, java.io.Serializable, java.lang.Cloneable, java.lang.Iterable<Pair>, java.util.Collection<Pair>, java.util.NavigableSet<Pair>, java.util.Set<Pair>, java.util.SortedSet<Pair>

public class BinaryRelation
extends java.util.TreeSet<Pair>
implements OrderedPairs

A binary relation on a set A is a collection of ordered pairs of elements in A. In other words, it is a subset of the Cartesian product A² = A × A.

This class is immutable.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
BinaryRelation(double[] x, double[] y) Construct a binary relation from {(x,y)}.

Method Summary

Modifier and Type	Method and Description
double[]	x() Get the abscissae.
double[]	y() Get the ordinates.

Methods inherited from class java.util.TreeSet

add, addAll, ceiling, clear, clone, comparator, contains, descendingIterator, descendingSet, first, floor, headSet, headSet, higher, isEmpty, iterator, last, lower, pollFirst, pollLast, remove, size, spliterator, subSet, subSet, tailSet, tailSet

Methods inherited from class java.util.AbstractSet

equals, hashCode, removeAll

Methods inherited from class java.util.AbstractCollection

containsAll, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.numericalmethod.suanshu.analysis.function.tuple.OrderedPairs

size

Methods inherited from interface java.util.Set

containsAll, equals, hashCode, removeAll, retainAll, toArray, toArray

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable

forEach

Constructor Detail

BinaryRelation

public BinaryRelation(double[] x,
                      double[] y)

Construct a binary relation from {(x,y)}.

Parameters:

x - elements in A

y - elements in A

Method Detail

x

public double[] x()

Description copied from interface: OrderedPairs

Get the abscissae.

Specified by:

x in interface OrderedPairs

Returns:

the abscissae

y

public double[] y()

Description copied from interface: OrderedPairs

Get the ordinates.

Specified by:

y in interface OrderedPairs

Returns:

the ordinates