Re: FLASH: Trick or Treat has a bug in it!

[John Croteau]

Hi all,


I was requested to give an analysis of the actual properties of the

below random function and I have the correct odds for this function:


The 1.JPGs will appear randomly about 50% of the time.

The 2.JPGs will appear randomly about 33 1/3% of the time.

The 3.JPGs will appear randomly about 16 2/3% of the time.


These are the mathematically correct odds except there may be a slight

difference of about 1 in 10000000000000000 which I don't feel is worth

analyzing.

My previous odds were estimates based on a quick test.

Anyone who wants more details on how this was figured out please Email

me directly.


> Hey, when John pointed out that my "Trick or Treat" random picture generator

> wasn't exactly random he was right!

It is random, it just doesn't provide equal odds for each pix.


>  It does turn things out at around a 55, 35, 10 ratio.

See above for more exact figures.


> http://www.websitepartners.com

> <SCRIPT language="JavaScript">

>  <!--

>   var image_count = 3

>   function tot(){

>    var left = Math.round(Math.random()*image_count)

>    var middle = Math.round(Math.random()*image_count)

>    var right = Math.round(Math.random()*image_count)

>    if (left < 1)

>     left = 1

>    if (middle < 1)

>     middle = 1

>    if (right < 1)

>     right = 1

>    eval("document.images['left'].src = 'left_"+left+".JPG'")

>    eval("document.images['middle'].src = 'middle_"+middle+".JPG'")

>    eval("document.images['right'].src = 'right_"+right+".JPG'")

>   }

>  //-->

>  </SCRIPT>


-----------                               -----------------------

John Croteau

croteauerols [dot] com (mailto:croteauerols [dot] com)

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