com.numericalmethod.suanshu.analysis.sequence
Class Fibonacci

java.lang.Object
  com.numericalmethod.suanshu.analysis.sequence.Fibonacci

All Implemented Interfaces:

Sequence

public class Fibonacci
extends java.lang.Object
implements Sequence

Construct a Fibonacci sequence.

A Fibonacci sequence starts with 0 and 1 as the first two numbers. Each subsequent number is the sum of the previous two.

For example, 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ...

See Also:

Wikipedia: Fibonacci number

Field Summary

int	length length of the sequence

Constructor Summary

Fibonacci(int length)
Construct a Fibonacci sequence.

Method Summary

double	get(int index) Get the index-th Fibonacci number, counting from 1.
double[]	getAll() Get the whole (finite) sequence in a double[] array.
int	length() Get the number of computed terms in the sequence.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

length

public int length

length of the sequence

Constructor Detail

Fibonacci

public Fibonacci(int length)

Construct a Fibonacci sequence.

Parameters:

length - the number of terms to generate

Method Detail

length

public int length()

Description copied from interface: Sequence

Get the number of computed terms in the sequence.

Specified by:

length in interface Sequence

Returns:

the length of sequence

get

public double get(int index)

Get the index-th Fibonacci number, counting from 1.

Specified by:

get in interface Sequence

Parameters:

index - an index ≤ length

Returns:

the index-th Fibonacci number

getAll

public double[] getAll()

Get the whole (finite) sequence in a double[] array. Get the first length Fibonacci numbers in a double[] array.

Specified by:

getAll in interface Sequence

Returns:

the first length Fibonacci numbers