org.apache.hadoop.examples.pi.math

Class Summation

java.lang.Object

org.apache.hadoop.examples.pi.math.Summation

All Implemented Interfaces:

Comparable<Summation>, Combinable<Summation>, Container<Summation>

public class Summation
extends Object
implements Container<Summation>, Combinable<Summation>

Represent the summation \sum \frac{2^e \mod n}{n}.

Field Summary

Fields

Modifier and Type	Field and Description
ArithmeticProgression	E Variable e in the summation.
ArithmeticProgression	N Variable n in the summation.

Constructor Summary

Constructors

Constructor and Description
Summation(ArithmeticProgression N, ArithmeticProgression E) Constructor

Method Summary

Modifier and Type	Method and Description
Summation	combine(Summation that) Combine this with that.
int	compareTo(Summation that)
double	compute() Compute the value of the summation.
boolean	contains(Summation that) Does this contains that?
boolean	equals(Object obj)
Summation	getElement()
Double	getValue() Return the value of this summation
int	hashCode() Not supported
Summation[]	partition(int nParts) Partition the summation.
<T extends Container<Summation>> List<Summation>	remainingTerms(List<T> sorted) Find the remaining terms.
void	setValue(double v) Set the value of this summation
String	toString()
static Summation	valueOf(String s) Covert a String to a Summation.

Methods inherited from class java.lang.Object

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

Field Detail

N

public final ArithmeticProgression N

Variable n in the summation.

E

public final ArithmeticProgression E

Variable e in the summation.

Constructor Detail

Summation

public Summation(ArithmeticProgression N,
                 ArithmeticProgression E)

Constructor

Method Detail

getElement

public Summation getElement()

Specified by:

getElement in interface Container<Summation>

Returns:

The contained element.

getValue

public Double getValue()

Return the value of this summation

setValue

public void setValue(double v)

Set the value of this summation

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Not supported

Overrides:

hashCode in class Object

valueOf

public static Summation valueOf(String s)

Covert a String to a Summation.

compute

public double compute()

Compute the value of the summation.

compareTo

public int compareTo(Summation that)

Specified by:

compareTo in interface Comparable<Summation>

combine

public Summation combine(Summation that)

Combine this with that.

Specified by:

combine in interface Combinable<Summation>

Parameters:

that - Another object.

Returns:

The combined object.

remainingTerms

public <T extends Container<Summation>> List<Summation> remainingTerms(List<T> sorted)

Find the remaining terms.

contains

public boolean contains(Summation that)

Does this contains that?

partition

public Summation[] partition(int nParts)

Partition the summation.