Random number generation

[Shivani R]

Hi,

I am working on an experiment in which I want to generate 100 random
numbers between 1 - 100, but a number should not be repeated. Say if 1
is generated then it should not be generated again. Basically I want
all 100 numbers between 1 and 100 without any repetetion and that too
in a random manner.

Right now I am using the script

Dim i as Integer
Dim Rand as Integer

For i = 1 to 100

Rand = Random(1,100)

Debug.Print "Random number is = " & Rand

Next i

This is giving me random numbers between 1 and 100, but the numbers
are repeated.

Please let me know if there is any logic of generating random numbers
without any repeat.

Any help is really appreciated.

Regards
Shivani

[dkmcf]

Shivani,

Simply put, you want to draw the numbers 1-100 in a shuffled order.
Easiest to do this making a List with the numbers 1-100, setting the
List to Random, then drawing samples from the List, perhaps as a
nested List. Please work through the appropriate tutorials in the
manuals that came with E-Prime, with particular attention to Appendix
C of the User's Guide. But if you would really rather roll your own
than use a List, then you want to program a Fisher-Yates shuffle
algorithm, just look that up on Wikipedia.

-- David McFarlane, Professional Faultfinder

[Michiel Spape]

Hi,
What David said, or: just shuffle an array with the numbers 1 to 100.

Dim i as Integer
Dim Rand100(1 to 100) as Integer

For i = 1 to 100

Rand100(i) = i 'fills array
Next i

RandomizeArray Rand100 'randomises

For i = 1 to 100

Debug.Print "Random number is = " & Rand100(i) 'show output
Next i

Michiel Spapé
Research Fellow
Perception & Action group
University of Nottingham
School of Psychology

Hi,

Rand = Random(1,100)

Next i

Regards
Shivani

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[Shivani R]

Hi,

Thanks David and Michiel for all your help and time. I am trying out
this logic in the experiment.

Thanks again.

Regards
Shivani

On Apr 9, 5:32 am, Michiel Spape <Michiel.Sp...@nottingham.ac.uk>
wrote:

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