I am learning the basics of Perl, after finishing learning the basics of Groovy, Python, C#, Scala and adding onto my Java this semester.
My main goal is to have a program read in a file that contains a number on each line like

1
2
3
3
2
2
1
2

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and take those numbers and print them out in order with a "*" mark for every occurrence, making a histogram type program. I can post my code in Java or something else if it would help anyone understand what I am talking about.
The output I need looks like:
1:**
2:****
3:**

open(FILE, '/location/data/p4.txt') or die "Cant't open file: $!\n";
my %myhash = ();
my @data = ();

chomp(@data = <FILE>);
foreach (@data)    {
    %myhash = (@data => $k++);
}

foreach $k (sort {$a <=> %b} keys %myhash)    {
    print "$myhash{$k} : ". '*' x $myhash{$k} . "\n";
}

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This is what I have done so far from using code in another problem I made. How do I up the count? It doesn't seem like my loop is working properly on this problem either.

In reply to Learning Perl, Hashes Help by learningmanylang

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