c:\@Work\Perl\monks>perl -le
"use warnings;
 use strict;
 ;;
 use List::Util qw( min max );
 ;;
 my @not_normalized = qw(5 4 9 9 6);
 ;;
 my @normalized = normalizer(@not_normalized);
 ;;
 printf qq{$_  } for @normalized;
 ;;
 sub normalizer {
   my $min_numarray = min @_;
   my $max_numarray = max @_;
   my $numden = $max_numarray - $min_numarray;
   ;;
   return map { ($_ - $min_numarray) / $numden } @_;
   }
"
0.2  0  1  1  0.4

##</code><code>##

c:\@Work\Perl\monks>perl -le
"use warnings;
 use strict;
 ;;
 use List::MoreUtils qw(minmax);
 ;;
 my @array = qw(5 4 9 9 6);
 ;;
 normalizer(@array);
 ;;
 printf qq{$_  } for @array;
 ;;
 sub normalizer {
   return unless @_ >= 2;
   my ($min, $max) = minmax @_;
   my $numden = $max - $min;
   ;;
   $_ = ($_ - $min) / $numden for @_;
   }
"
0.2  0  1  1  0.4