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Re^2: finding matches in the same array

by bageler (Hermit)
on Apr 13, 2005 at 18:07 UTC ( [id://447540]=note: print w/replies, xml ) Need Help??


in reply to Re: finding matches in the same array
in thread finding matches in the same array

let's reduce the loops by calculating the average as we move along:
my %oc; for (0 .. $#sequence) { $oc{$sequence[$_]}[0] = ($oc{$sequence[$_]}[0]+$numbers[$_])/(++$oc{$sequence[$_]}[1]); } foreach my $seq (keys %oc) { print "The average for $seq is ".$oc{$seq}[0].$/; }

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Re^3: finding matches in the same array
by polettix (Vicar) on Apr 13, 2005 at 18:19 UTC
    This does not seem to be an average :) First item is divided by 1, second divided by 2, third by 3... - maybe it's better to make the division at the end:
    my %oc; for (0 .. $#sequence) { $oc{$sequence[$_]}[0] += $numbers[$_]; ++$oc{$sequence[$_]}[1]; } foreach my $seq (keys %oc) { print "The average for $seq is ".($oc{$seq}[0] / $oc{$seq}[1]).$/; }

    Flavio (perl -e "print(scalar(reverse('ti.xittelop@oivalf')))")

    Don't fool yourself.

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