3 files changed, 39 insertions, 0 deletions
diff --git a/challenge-305/feng-chang/raku/ch-1.raku b/challenge-305/feng-chang/raku/ch-1.raku
new file mode 100755
index 0000000000..be6e57a116
--- /dev/null
+++ b/challenge-305/feng-chang/raku/ch-1.raku
@@ -0,0 +1,5 @@
+#!/bin/env raku
+
+unit sub MAIN(*@bins where .all == 0|1);
+
+put ([\~] @bins).map({ .parse-base(2).is-prime });
diff --git a/challenge-305/feng-chang/raku/ch-2.raku b/challenge-305/feng-chang/raku/ch-2.raku
new file mode 100755
index 0000000000..327b1e02c9
--- /dev/null
+++ b/challenge-305/feng-chang/raku/ch-2.raku
@@ -0,0 +1,6 @@
+#!/bin/env raku
+
+unit sub MAIN(*@words);
+
+my @alien-dict = @words.pop.comb;
+put @words.sort({ .trans('a'..'z' => @alien-dict) });
diff --git a/challenge-305/feng-chang/raku/test.raku b/challenge-305/feng-chang/raku/test.raku
new file mode 100755
index 0000000000..d8cd5fc522
--- /dev/null
+++ b/challenge-305/feng-chang/raku/test.raku
@@ -0,0 +1,28 @@
+#!/bin/env raku
+
+# The Weekly Challenge 305
+use Test;
+
+sub pwc-test(Str:D $script, Bool :$deeply? = False, *@input) {
+    my ($expect, $assertion) = @input.splice(*-2, 2);
+    my $p = run $script, |@input, :out;
+    if $deeply {
+        is-deeply $p.out.slurp(:close).chomp.words.Bag, $expect, $assertion;
+    } else {
+        is $p.out.slurp(:close).chomp, $expect, $assertion;
+    }
+}
+
+# Task 1, Binary Prefix
+pwc-test './ch-1.raku', <1 0 1>, 'False True True',  'Binary Prefix: (1,0,1) => false,true,true';
+pwc-test './ch-1.raku', <1 1 0>, 'False True False', 'Binary Prefix: (1,1,0) => false,true,false';
+pwc-test './ch-1.raku',
+    <1 1 1 1 0 1 0 0 0 0 1 0 1 0 0 1 0 0 0 1>,
+    'False True True False False True False False False False False False False False False False False False False True',
+    'Binary Prefix: (1,1,1,1,0,1,0,0,0,0,1,0,1,0,0,1,0,0,0,1) => false,true,true,false,false,true,false,false,false,false,false,false,false,false,false,false,false,false,false,true';
+
+# Task 2, Alien Dictionary
+pwc-test './ch-2.raku', <perl python raku>, 'hlabydefgirkmnopqjstuvwxcz', 'raku python perl',
+    'Alien Dictionary: @words=<perl python raku>,     alien="hlabydefgirkmnopqjstuvwxcz" => raku,python,perl';
+pwc-test './ch-2.raku', <the weekly challenge>, 'corldabtefghijkmnpqswuvxyz', 'challenge the weekly',
+    'Alien Dictionary: @words=<the weekly challenge>, alien="corldabtefghijkmnpqswuvxyz" => challenge,the,weekly';