Here's a snippit that will initialize an array and select a number while the array still has elements...what you do with the element is up to you...

use strict;
my $max = 200;                                #number of elements for 
+array
my @array = (0..$max-1);                      #initialize array
while(@array !=0){
  my $index   = rand @array;                  #pick a random element o
+f the existing array
  my $element = $array[$index];               #extract the element
  my @newarray = grep {$_ !=$element} @array; #remove the element
  @array = @newarray;                         #reset the array
}
[download]

Addendum: See BrowserUk's reply for a more tidy/efficient method of extracting the element from the array

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