- Added solutions by Arne Sommer.

1 files changed, 48 insertions, 0 deletions

diff --git a/challenge-059/arne-sommer/raku/linked-list-linked b/challenge-059/arne-sommer/raku/linked-list-linked
new file mode 100755
index 0000000000..00796d8676
--- /dev/null
+++ b/challenge-059/arne-sommer/raku/linked-list-linked
@@ -0,0 +1,48 @@
+#! /usr/bin/env raku
+
+multi MAIN (Int $k = 3, Str $list = "1 4 3 2 5 2", :$verbose)
+{
+  MAIN($k, $list.words, :$verbose);
+}
+
+multi MAIN (Int $k = 3, *@list, :$verbose)
+{
+  my @lower;
+  my @higher;
+
+  for @list -> $elem
+  {
+    $elem >= $k
+      ?? @higher.push: $elem
+      !! @lower.push: $elem;
+  }
+
+  my @result = (@lower, @higher).flat;
+
+  if $verbose
+  {
+    say ": == : $k";
+    say ": <  : @lower[]";
+    say ": >= : @higher[]";
+  }
+  
+  say @result.join(" → ") if $verbose;
+
+  class ListElem
+  {
+    has $.value;
+    has $.next is rw;
+
+    method display
+    {
+      print $.value;
+      if $.next { print " → "; $.next.display; } else { say ""; }
+    }
+  }
+  
+  my $head;
+
+  $head = ListElem.new(value => $_, next => $head) for @result.reverse;
+
+  $head.display; 
+}