Asking the question is answering it!

Use the following algorithm:

1. Call the minimum of your normalized range norm_min and the maximum of your normalized range norm_max.
2. Go through your list of figures and find the minimum (mini) and maximum (maxi) of the list.
3. Go again through the list, subtract mini from your number, multiply by (norm_max - norm_min) / (maxi - mini) and finally add norm_min.

$norm_min=1;
$norm_max=3;
$mini;
$maxi;
$mini=<DATA>;
$maxi=$mini;
@figures=<DATA>;
foreach (@figures) {
    chomp;
    $mini=$_ if $_<$mini;
    $maxi=$_ if $_>$maxi;
}
print "$mini  $maxi\n";

foreach (@figures) {
    chomp;
    my $result=($_ - $mini) * ($norm_max - $norm_min) / ($maxi - $mini
+) + $norm_min;
    print "$_: $result\n";

}


__DATA__
10
3
50
-8
100
67
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CountZero

"If you have four groups working on a compiler, you'll get a 4-pass compiler." - Conway's Law