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-rw-r--r--challenge-003/fjwhittle/perl6/ch-2.p624
1 files changed, 24 insertions, 0 deletions
diff --git a/challenge-003/fjwhittle/perl6/ch-2.p6 b/challenge-003/fjwhittle/perl6/ch-2.p6
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+++ b/challenge-003/fjwhittle/perl6/ch-2.p6
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+#!/usr/bin/env perl6
+
+use v6;
+
+subset Count of Int where * >= 3;
+
+#| Generates a single row of the triangle.
+multi sub generate-row(Int $n) {
+ my @row = [1];
+
+ for 1..^$n -> $m {
+ my $fr = ($n - $m) / $m;
+ @row.push: @row.tail * $fr;
+ }
+
+ @row;
+}
+
+#| Generate Pascal's Triangle
+sub MAIN(
+ Count :$rows = 3 #= Number of rows to make (minimum 3).
+) {
+ generate-row($_).put for 1..$rows;
+}