Here's a variation on the theme. The difference is that this version doesn't change @row using pushes. It's going to be sized right the first time. 
sub pascal {
    my @row = (0) x $_ [0];
    $row [0] = 1;
    foreach (1 .. shift) {
        print "@row[0 .. $_ - 1]\n";
        $row [$_] += $row [$_ - 1] for reverse 1 .. @row;
    }
}

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Abigail

In reply to Re: Pascal triange... by Abigail-II
in thread Pascal's triangle... by kiat

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