#!/usr/bin/perl
#script.pl
#basically read all the input, separate the digits, and
#then figure out how many of each are there.

#@p=split(//,'0000000000');
#map ($_ =~ s/\D//g, @x=<>);
#map ( {$p[$_]++;$c++}  split(//,join('',@x)));
#print join("\n", map({ $l=$m++.' -->';for ($k=0;$k<($_/$c)*100;$k++) 
+{ $l.="*"; }; $l; }  @p))."\n";

@p=(0)x10;
$_=join '', <>;
++$c&&$p[$&]++while/\d/g;
print join("\n", map({ $m++.' -->'.(('*')x(($_/$c)*100));}  @p))."\n";


# use with bc as 
# echo "space 20;sqrt(2)" | bc -lq | script.pl

[download]

In reply to Digit Density by termix

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.