Once you have your files read in using push(@{$health{$patient}},$level); you should end up with a structure like so:
%health = (
'John Kay' => [151,128],
'Sally Gi' => [174,145],
);
You can then iterate through the hash of arrays using while or for:
while ( my ($patient,$levels) = each %health ) {
my @ascending = sort {$a <=> $b} @$levels;
print "$patient: @ascending\n";
}
for my $patient ( keys %health ) {
my $levels = $health{$patient};
my @descending = sort {$b <=> $a} @$levels;
print "$patient: @descending\n";
}
Output:
John Kay: 128 151
Sally Gi: 145 174
John Kay: 151 128
Sally Gi: 174 145
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