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Re: Pascal triange...

by Abigail-II (Bishop)
on Jun 19, 2002 at 17:04 UTC ( #175779=note: print w/ replies, xml ) Need Help??


in reply to Re: Pascal triange...
in thread Pascal's triangle...

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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Re: Re: Pascal triange...
by Burak (Chaplain) on Dec 25, 2003 at 14:35 UTC
    Maybe we can add space padding to your function :)
    sub pascal { my $max = shift or return; my @row = (0) x $max; $row[0] = 1; foreach (1 .. $max) { print " " x ($max - $_),"@row[0 .. $_ - 1]\n"; $row[$_] += $row[$_ - 1] for reverse 1 .. @row; } }

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