edu.uci.ics.jung.algorithms.util

Class NotRandom

java.lang.Object

java.util.Random

edu.uci.ics.jung.algorithms.util.NotRandom

All Implemented Interfaces:

Serializable

public class NotRandom
extends Random

A decidedly non-random extension of Random that may be useful for testing random algorithms that accept an instance of Random as a parameter. This algorithm maintains internal counters which are incremented after each call, and returns values which are functions of those counter values. Thus the output is not only deterministic (as is necessarily true of all software with no externalities) but precisely predictable in distribution.

Author:

Joshua O'Madadhain

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
NotRandom(int size) Creates an instance with the specified sample size.

Method Summary

Modifier and Type	Method and Description
double	nextDouble() Returns the post-incremented value of the internal counter modulo size, divided by size.
float	nextFloat() Returns the post-incremented value of the internal counter modulo size, divided by size.
int	nextInt(int n) Returns the post-incremented value of the internal counter modulo n.

Methods inherited from class java.util.Random

doubles, doubles, doubles, doubles, ints, ints, ints, ints, longs, longs, longs, longs, next, nextBoolean, nextBytes, nextGaussian, nextInt, nextLong, setSeed

Methods inherited from class java.lang.Object

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

Constructor Detail

NotRandom

public NotRandom(int size)

Creates an instance with the specified sample size.

Parameters:

size - the sample size

Method Detail

nextInt

public int nextInt(int n)

Returns the post-incremented value of the internal counter modulo n.

Overrides:

nextInt in class Random

nextDouble

public double nextDouble()

Returns the post-incremented value of the internal counter modulo size, divided by size.

Overrides:

nextDouble in class Random

nextFloat

public float nextFloat()

Returns the post-incremented value of the internal counter modulo size, divided by size.

Overrides:

nextFloat in class Random