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Hi Monks,

I've coded a program to print out Pascal Triangle numbers and would like to find out how the code can be improved or whether there's a more efficient way to write it.

I hope you won't laugh at my code :)

#!/usr/local/bin/perl print "Enter number of rows...\n"; chomp (my $rows = <>); print "You entered $rows for rows\n"; pascal($rows); sub pascal { my ($rows) = @_; print "1\n"; for (my $outer = 1; $outer <= $rows; $outer++) { my $inner = $outer; print "1" unless ($outer == 1); for ($i = 1; $i <= $inner; $i++) { my $denominator = factorial($i)*(factorial($inner-$i)); my $pascalnum = factorial($inner)/$denominator if ($denominator +!= 0); print " $pascalnum" if ($outer > 1); } print "1\n" unless ($outer == 1); } } sub factorial { my ($factorial) = @_; my $answer = $factorial; while ($factorial) { $factorial--; $answer *= $factorial unless ($factorial == 0); } return $answer; }
I look forward to your comments and suggestions on how to improve the code.

Thanks in advance.


Edit kudra, 2002-06-19 Corrected spelling in title

In reply to Pascal's triangle... by kiat

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