I'd sort first, then remove duplicates

I've still no idea what resample means 

#!/usr/bin/perl --
use strict; use warnings; use Data::Dump qw/ dd pp /;
my @AoA = (
           [ 0.5, "b1", "c0" ],
           [ 0.4, "b1", "c1" ],
           [ 0.7, "b2", "c2" ],
           [ 0.3, "b3", "c3" ],
           [ 0.6, "b3", "c4" ],
);

dd\@AoA;
@AoA = sort { $$b[0] <=> $$a[0] } @AoA;
dd\@AoA;
{ my %seen;
  @AoA = grep{!$seen{$$_[1]}++}@AoA;
}
dd\@AoA;
__END__
[
  [0.5, "b1", "c0"],
  [0.4, "b1", "c1"],
  [0.7, "b2", "c2"],
  [0.3, "b3", "c3"],
  [0.6, "b3", "c4"],
]
[
  [0.7, "b2", "c2"],
  [0.6, "b3", "c4"],
  [0.5, "b1", "c0"],
  [0.4, "b1", "c1"],
  [0.3, "b3", "c3"],
]
[[0.7, "b2", "c2"], [0.6, "b3", "c4"], [0.5, "b1", "c0"]]

[download]

Also worth considering are Sort::Key - the fastest way to sort anything in Perl

and Sort::Key::External allows to sort huge lists that do not fit in the available memory.

In reply to Re^2: Sort over remaining part of array by Anonymous Monk
in thread Sort over remaining part of array by monkini

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.