You want grep, with some data extraction in the choice routine. 

our ($starttime, $endtime) = init();
# . . .
my @selected = grep {
    my $time = (split /[_.]/)[2];
    $time > $starttime and $time <= $endtime;;
} </path/to/*>;

[download]
Not having to sort helps, since we don't need to keep values for comparison. If there are files there which don't follow the naming scheme, you may need to filter them out with another grep or with map, or a refinement of the glob in angles.

After Compline,
Zaxo

In reply to Re: Extract the middle part of a list by Zaxo
in thread Extract the middle part of a list by chrism01

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.