2 files changed, 50 insertions, 0 deletions
diff --git a/challenge-239/mark-anderson/raku/ch-1.raku b/challenge-239/mark-anderson/raku/ch-1.raku
new file mode 100644
index 0000000000..4763f75e9f
--- /dev/null
+++ b/challenge-239/mark-anderson/raku/ch-1.raku
@@ -0,0 +1,11 @@
+#!/usr/bin/env raku
+use Test;
+
+ok  same-string(<ab c>, <a bc>);
+nok same-string(<ab c>, <ac b>);
+ok  same-string(<ab cd e>, [<abcde>]);
+
+sub same-string(@a, @b)
+{
+    [eq] ([~] @a), ([~] @b)
+}
diff --git a/challenge-239/mark-anderson/raku/ch-2.raku b/challenge-239/mark-anderson/raku/ch-2.raku
new file mode 100644
index 0000000000..f6c46defd7
--- /dev/null
+++ b/challenge-239/mark-anderson/raku/ch-2.raku
@@ -0,0 +1,39 @@
+#!/usr/bin/env raku
+use Test;
+use Benchy;
+
+is consistent-strings(<ad bd aaab baa badab>,     'ab'),  2;
+is consistent-strings(<a b c ab ac bc abc>,       'abc'), 7;
+is consistent-strings(<cc acd b ba bac bad ac d>, 'cad'), 4;
+benchmark();
+
+sub consistent-strings(@a, $allowed)
+{
+    @a.grep({ .comb (<=) $allowed.comb }).elems
+}
+
+sub consistent-strings-slow(@a, $allowed)
+{
+    @a.match(/ <|w> <{"<[$allowed]>"}>+ <|w> /, :global).elems
+}
+
+sub benchmark
+{
+    b 10,
+    {   
+        consistent-strings-slow(<ad bd aaab baa badab>,     'ab');
+        consistent-strings-slow(<a b c ab ac bc abc>,       'abc');
+        consistent-strings-slow(<cc acd b ba bac bad ac d>, 'cad') 
+    },
+
+    { 
+        consistent-strings(<ad bd aaab baa badab>,     'ab');
+        consistent-strings(<a b c ab ac bc abc>,       'abc');
+        consistent-strings(<cc acd b ba bac bad ac d>, 'cad') 
+    }
+
+    # Bare: 0.000040891s
+    # Old:  11.435895767s
+    # New:  0.019084392s
+    # NEW version is 599.23x faster
+}