Class RandomNumber

Inheritance
Object
RandomNumber
Inherited Members
Namespace: TowseyLibrary
Assembly: TowseyLibrary.dll
Syntax
public class RandomNumber

Constructors

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RandomNumber()

Declaration
public RandomNumber()
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RandomNumber(Int32)

Declaration
public RandomNumber(int seed)
Parameters
Type Name Description
Int32 seed

Methods

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GetDouble()

returns a random number between 0.0 and 1.0.

Declaration
public double GetDouble()
Returns
Type Description
Double
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GetDouble(Int32)

Declaration
public double GetDouble(int max)
Parameters
Type Name Description
Int32 max
Returns
Type Description
Double
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GetInt(Int32)

generates numbers 0 to max-1.

Declaration
public int GetInt(int max)
Parameters
Type Name Description
Int32 max
Returns
Type Description
Int32
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GetRandomDistancesInEuclidianSpace(Int32, Int32)

generates numbers 1 - 100.

Declaration
public static void GetRandomDistancesInEuclidianSpace(int trialCount, int dimensions)
Parameters
Type Name Description
Int32 trialCount
Int32 dimensions
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GetRandomPercent()

generates numbers 1 - 100.

Declaration
public int GetRandomPercent()
Returns
Type Description
Int32
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GetRandomVector(Int32, RandomNumber)

generates a vector of random numbers in [0, 1.0].

Declaration
public static double[] GetRandomVector(int vectorLength, RandomNumber rn)
Parameters
Type Name Description
Int32 vectorLength
RandomNumber rn
Returns
Type Description
Double[]
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GetVectorOfRandomIntegers(Int32[], RandomNumber)

Declaration
public static int[] GetVectorOfRandomIntegers(int[] maxValues, RandomNumber rn)
Parameters
Type Name Description
Int32[] maxValues
RandomNumber rn
Returns
Type Description
Int32[]
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RandomizeArray(Double[], Int32)

returns the passed array but with the elements in a random order see method above which was originally written for FuzzyART in 1995.

Declaration
public static double[] RandomizeArray(double[] array, int seed)
Parameters
Type Name Description
Double[] array
Int32 seed
Returns
Type Description
Double[]
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RandomizeArray(Int32[], Int32)

IMPORTANT - THIS METHOD NEEDS WORK!! returns the passed array but with the elements in a random order see method above which was originally written for FuzzyART in 1995.

Declaration
public static int[] RandomizeArray(int[] array, int seed)
Parameters
Type Name Description
Int32[] array
Int32 seed
Returns
Type Description
Int32[]
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RandomizeNumberOrder(Int32, Int32)

Returns integers up to N in random order. Use of seed will always return the same order. Pass a negative seed value to ignore it and to have a different random order every time method called. Use this method if you want random numbers up to N without replacement.

Declaration
public static int[] RandomizeNumberOrder(int N, int seed)
Parameters
Type Name Description
Int32 N
Int32 seed
Returns
Type Description
Int32[]
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RandomNumbersWithoutReplacement(Int32, Int32)

Returns N random integers between 0 - K-1 without replacement. If seed is negative, it will be ignored ie different random order every time method called.

Declaration
public static int[] RandomNumbersWithoutReplacement(int n, int seed)
Parameters
Type Name Description
Int32 n
Int32 seed
Returns
Type Description
Int32[]

Extension Methods