Solutions challenge 078

2 files changed, 40 insertions, 0 deletions

diff --git a/challenge-078/wambash/raku/ch-1.raku b/challenge-078/wambash/raku/ch-1.raku
new file mode 100755
index 0000000000..7e518ce795
--- /dev/null
+++ b/challenge-078/wambash/raku/ch-1.raku
@@ -0,0 +1,21 @@
+#!/usr/bin/env raku
+
+multi leader-element ( +@a, :$reverse! where *.not ) {
+    @a
+    andthen [\max] $_
+    andthen .squish
+}
+
+multi leader-element ( +@a, :$reverse = True ) {
+    @a
+    andthen .reverse
+    andthen *.&leader-element: :!reverse
+    andthen .reverse
+}
+
+multi MAIN ( :$test! ) {
+    use Test;
+    is leader-element(9, 10, 7, 5, 6, 1), (10, 7, 6, 1);
+    is leader-element(3, 4, 5), (5,);
+    done-testing;
+}
diff --git a/challenge-078/wambash/raku/ch-2.raku b/challenge-078/wambash/raku/ch-2.raku
new file mode 100755
index 0000000000..66ae200747
--- /dev/null
+++ b/challenge-078/wambash/raku/ch-2.raku
@@ -0,0 +1,19 @@
+#!/usr/bin/env raku
+
+sub left-rotate ( @a, @b ) {
+    @b.map: { @a.rotate: $_ }
+}
+
+multi MAIN ( :$test! ) {
+    use Test;
+    cmp-ok left-rotate( <10 20 30 40 50>, <3 4> ),'~~', (<40 50 10 20 30>, <50 10 20 30 40>);
+    cmp-ok
+        left-rotate( <7 4 2 6 3>, <1 3 4> ),
+        '~~',
+        (
+            <4 2 6 3 7>,
+            <6 3 7 4 2>,
+            <3 7 4 2 6>,
+        );
+    done-testing;
+}