comment on

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

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