sam.toolkit
Class Random.IntegerSetRandomizer

java.lang.Object
  |
  +--sam.toolkit.Random.IntegerSetRandomizer

All Implemented Interfaces:

java.util.Enumeration

Enclosing class:

Random

public static class Random.IntegerSetRandomizer

extends java.lang.Object

implements java.util.Enumeration

Class for randomizing over fixed integer sets. This is a randomizer that randomly chooses a permutation on a set of integers. Note that all n! permutations on n integers are equi-probable. This class implements such a randomly chosen permutation as a standard Enumeration on those allows integers.

Constructor Summary

Random.IntegerSetRandomizer(int length)
Builds a new randomly choosen permutation on a range of integers.

Random.IntegerSetRandomizer(int[] credits)
Builds a new randomly choosen permutation on a range of weighted integers.

Method Summary

boolean	hasMoreElements() Wether this enumeration has more elements to enumerate.
int	next() Gets the next integer to enumerate
java.lang.Object	nextElement() Gets the next element to enumerate

Methods inherited from class java.lang.Object

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

Constructor Detail

Random.IntegerSetRandomizer

public Random.IntegerSetRandomizer(int length)

Builds a new randomly choosen permutation on a range of integers.

Parameters:

length - the largest integer: the integer range thus is [0 , length-1].

Random.IntegerSetRandomizer

public Random.IntegerSetRandomizer(int[] credits)

Builds a new randomly choosen permutation on a range of weighted integers.

Method Detail

hasMoreElements

public boolean hasMoreElements()

Wether this enumeration has more elements to enumerate.

Specified by:

hasMoreElements in interface java.util.Enumeration

nextElement

public java.lang.Object nextElement()
                             throws java.util.NoSuchElementException

Gets the next element to enumerate

Specified by:

nextElement in interface java.util.Enumeration

Returns:

an instance of Integer containing the next integer

Throws:

java.util.NoSuchElementException - if no more such integer is to be enumerated

next

public int next()
         throws java.util.NoSuchElementException

Gets the next integer to enumerate

Throws:

java.util.NoSuchElementException - if no more such integer is to be enumerated