Tip

Number Scambler

I decided to post this tip, as it is something I couldn't locate when I had
need of it.

My scenario is as follows:

I needed to scramble a range of numbers(X) (from 1 to X) so that they would
display in a unique order each time the function was called.

The function expects an integer (X) to be passed to it and will return a
variant containing the randomized list from 1 to X.
' RandomOrderedList will receive the results of the function call.

Dim RandomOrderedList As Variant

RandomOrderedList = RandomGenerator ( < Any Number > )


'==================The function ================

Function RandomGenerator (X As Integer) As Variant

'Baseline will hold a sequential list of numbers from 1 to X.

Dim Baseline List As Integer

For i = 0 To X-1

Baseline(i)=i+1

Next

'Set RandomFactor vehicles

Dim RandomFactor1 As Variant

Dim RandomFactor2 As Variant

' Set Temp value holder

Count = 0

While Not ( count = X )

RandomFactor1 = Evaluate( "@random" )

RandomFactor2 = Int( 1 + RandomFactor1(0) * ( X * X ) )

If RandomFactor2 > X Then Goto NextOne

Dim TempValueHolder List As Integer

Forall X1 In TempValueHolder

If X1 = RandomFactor2 Then Goto NextOne

End Forall

TempValueHolder(Count ) =RandomFactor2

Count=Count + 1

Nextone:

Wend

RandomGenerator = TempValueHolder


End Function

This was first published in November 2000

There are Comments. Add yours.

 
TIP: Want to include a code block in your comment? Use <pre> or <code> tags around the desired text. Ex: <code>insert code</code>

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy
Sort by: OldestNewest

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to:

Disclaimer: Our Tips Exchange is a forum for you to share technical advice and expertise with your peers and to learn from other enterprise IT professionals. TechTarget provides the infrastructure to facilitate this sharing of information. However, we cannot guarantee the accuracy or validity of the material submitted. You agree that your use of the Ask The Expert services and your reliance on any questions, answers, information or other materials received through this Web site is at your own risk.