I think an insertion sort using splice might work

Homework Spoiler - 
use Modern::Perl;
use Smart::Comments;
my %jetsons = (
    7  => 'Judy',
    10 => 'Jane',
    11 => 'George',
    2  => 'Elroy',
    100=> 'Rosey',
    1  => 'Astro',
    19 => 'Mr. Spacely',
    22 => 'Mr. Cogswell');


my    @result = ();
for my $key ( keys %jetsons ){
    my $x = 0;
    CHECKLIST: for my $value ( @result ){
        if( $value > $key ){
            last CHECKLIST;
        }else{
            $x++;
        }
    }
    splice( @result, $x, 0, $key );
}

### @result

[download]

Returns

### @result: [
###            1,
###            2,
###            7,
###            10,
###            11,
###            19,
###            22,
###            100
###          ]

[download]

In reply to Re: Numeric sorting WITHOUT <=> by jandrew
in thread Numeric sorting WITHOUT <=> by Anonymous Monk

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.