To sort the input array, try this:
Compare decimal numbers for each line. 
#!/usr/bin/perl
use strict;

my @names = qw (Patch_8.0 Patch_9.3 Patch_10.2 Patch_1.0 Patch_2.0 Pat
+ch_3.1 Patch_5.0 Patch_4.2 Patch_6.0 Patch_7.0);

my @patches = sort { my ($A) = $a=~ m/([\d\.]+)/; 
                     my ($B) = $b=~ m/([\d\.]+)/;        
                       $A <=> $B}@names;

print "$_\n" for @patches;

__END__
Patch_1.0
Patch_2.0
Patch_3.1
Patch_4.2
Patch_5.0
Patch_6.0
Patch_7.0
Patch_8.0
Patch_9.3
Patch_10.2

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In reply to Re: sorting an array with decimal points by Marshall
in thread sorting an array with decimal points by levW

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