Beefy Boxes and Bandwidth Generously Provided by pair Networks
No such thing as a small change

Comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
Don't worry too much about micro-optimization. The key is to take advantage of the fact that an n-gram is all bunched together so you don't have to track too much information. I would do that something like this (untested):
#! /usr/bin/perl -w use strict; my $last_n_gram = ""; my @line_numbers; while (<>) { my ($n_gram, $line_number) = ($_ =~ /(.*): (\d+)$/); if ($n_gram ne $last_n_gram and @line_numbers) { @line_numbers = sort {$a <=> $b} @line_numbers; print "$last_n_gram: @line_numbers\n"; $last_n_gram = $n_gram; @line_numbers = (); } push @line_numbers, $line_number; } @line_numbers = sort {$a <=> $b} @line_numbers; print "$last_n_gram: @line_numbers\n";
This assumes that you're going to intermediate_file > final_file.

In reply to Re^5: statistics of a large text by tilly
in thread statistics of a large text by perl_lover_always

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, 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, 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.
  • Log In?

    What's my password?
    Create A New User
    and all is quiet...

    How do I use this? | Other CB clients
    Other Users?
    Others musing on the Monastery: (12)
    As of 2018-06-21 09:20 GMT
    Find Nodes?
      Voting Booth?
      Should cpanminus be part of the standard Perl release?

      Results (117 votes). Check out past polls.