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;
}
}
Abigail
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