com.numericalmethod.suanshu.stats.random.distribution
Class Uniform

java.lang.Object
  com.numericalmethod.suanshu.stats.random.distribution.Uniform

All Implemented Interfaces:

RandomLongGenerator, RandomNumberGenerator

public class Uniform
extends java.lang.Object
implements RandomLongGenerator

A pseudo uniform random number generator generates numbers within the unit interval in such a way that there are equal probabilities of them falling in the same length sub-interval.

Sampling from the unit interval is the most basic building block of most pseudo random number generation algorithms.

Note that the numbers generated are in [0, 1].

See Also:

Wikipedia: Uniform distribution (continuous)

Nested Class Summary

static class

Uniform.Method the different pseudo uniform random number generators available

Field Summary

Uniform.Method

method the sampling algorithm

Constructor Summary

Uniform()
Construct a Mersenne Twister pseudo uniform random number generator.

Uniform(Uniform.Method method)
Construct a pseudo uniform random number generator.

Method Summary

double	nextDouble() Get the next random double between 0 and 1.
long	nextLong() Get the next random long.
void	seed(long... seeds) Seed the random number generator to produce repeatable sequences.

Methods inherited from class java.lang.Object

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

Field Detail

method

public final Uniform.Method method

the sampling algorithm

Constructor Detail

Uniform

public Uniform(Uniform.Method method)

Construct a pseudo uniform random number generator.

Parameters:

method - the algorithm to use

Uniform

public Uniform()

Construct a Mersenne Twister pseudo uniform random number generator.

Method Detail

seed

public void seed(long... seeds)

Description copied from interface: RandomNumberGenerator

Seed the random number generator to produce repeatable sequences.

Specified by:

seed in interface RandomNumberGenerator

Parameters:

seeds - the seeds

nextDouble

public double nextDouble()

Get the next random double between 0 and 1.

Specified by:

nextDouble in interface RandomNumberGenerator

Returns:

the next random number between 0 and 1

nextLong

public long nextLong()

Description copied from interface: RandomLongGenerator

Get the next random long.

Specified by:

nextLong in interface RandomLongGenerator

Returns:

the next random long