Merge pull request #52 from jmaslak/jmaslak-week3

Add Perl6 solutions for Week 3

2 files changed, 40 insertions, 0 deletions

diff --git a/challenge-003/joelle-maslak/perl6/ch-1.p6 b/challenge-003/joelle-maslak/perl6/ch-1.p6
new file mode 100644
index 0000000000..d9649489c7
--- /dev/null
+++ b/challenge-003/joelle-maslak/perl6/ch-1.p6
@@ -0,0 +1,18 @@
+#!/usr/bin/env perl6
+
+use v6;
+
+my @hamming = (1..∞).grep: { divisors($^num).grep( *.is-prime ).Set ⊆ (2,3,5).Set };
+say "Hamming numbers [0..4]: " ~ @hamming[^5].join(", ");
+
+sub divisors(Int:D $i -->Array[Int:D]) {
+    if ($i == 0) { return 0; }
+
+    my $sqrt = sqrt($i).Int;
+
+    my Int:D @divs = grep { $i %% $^div }, 1..$sqrt;
+    @divs.append: map { Int($i / $^div) }, @divs;
+
+    return @divs;
+}
+
diff --git a/challenge-003/joelle-maslak/perl6/ch-2.p6 b/challenge-003/joelle-maslak/perl6/ch-2.p6
new file mode 100644
index 0000000000..3200dfc2bf
--- /dev/null
+++ b/challenge-003/joelle-maslak/perl6/ch-2.p6
@@ -0,0 +1,22 @@
+#!/usr/bin/env perl6
+
+use v6;
+
+sub MAIN(Int:D $rows where $rows ≥ 3) {
+    my @rows;
+
+    for 0..^($rows) -> $i {
+        my @row;
+        if ! $i {
+            @row = 1;
+        } else {
+            @row.append: 1;
+            @row.append: map { @rows[$i-1][$^a-1] + @rows[$i-1][$^a] }, 1..^$i;
+            @row.append: 1;
+        }
+        @rows.push: @row;
+
+        say ("  " x $rows - $i) ~ @row.map( { $^a.fmt("%3d") } ).join(" ");
+    }
+}
+