Question

I have a Perl question like this:
Write a Perl program that will read a series of last names and phone numbers from the given input. The names and numbers should be separated by a comma. Then print the names and numbers alphabetically according to last name.Use hashes.

Any idea how to solve this?

Answer 1

Something like the following perhaps.

my %hash;
foreach(<>){ #reads yor args from commandline or input-file
my @arr = split(/\,/); #split at comma, every line
$hash{$arr[0]} = $arr[1]; #assign to hash
}

#print hash here
foreach my $key (sort keys %hash ) #sort and iterate
{
    print "Name: " . $key . " Number: " . $hash{$key} . "\n";
}