week 341 Arne Sommer

5 files changed, 99 insertions, 0 deletions

diff --git a/challenge-341/arne-sommer/blog.txt b/challenge-341/arne-sommer/blog.txt
new file mode 100644
index 0000000000..e8030b3714
--- /dev/null
+++ b/challenge-341/arne-sommer/blog.txt
@@ -0,0 +1 @@
+https://raku-musings.com/reverse-broken-again.html
\ No newline at end of file
diff --git a/challenge-341/arne-sommer/raku/broken-keyboard b/challenge-341/arne-sommer/raku/broken-keyboard
new file mode 100755
index 0000000000..a79fc83caf
--- /dev/null
+++ b/challenge-341/arne-sommer/raku/broken-keyboard
@@ -0,0 +1,20 @@
+#! /usr/bin/env raku
+
+unit sub MAIN (:s(:$str) where $str ~~ /^ <[a..z A..Z \s]>+ $/,
+               :k(:$keys) where $keys ~~ /^ <[a..z]>* $/,
+               :v(:$verbose));
+
+my @words     = $str.lc.words;
+my @keys      = $keys.lc.comb;
+my @typeable  = @words.grep({ .contains(none(@keys)) });
+
+die "Duplicate keys" if @keys.repeated;
+
+if $verbose
+{
+  say ": Words: { @words.map({ "'$_'" }).join(", ") }";
+  say ": Keys: { @keys.map({ "'$_'" }).join(", ") }";
+  say ": Typeable words: { @typeable.map({ "'$_'" }).join(", ") }";
+}
+
+say @typeable.elems;
diff --git a/challenge-341/arne-sommer/raku/ch-1.raku b/challenge-341/arne-sommer/raku/ch-1.raku
new file mode 100755
index 0000000000..a79fc83caf
--- /dev/null
+++ b/challenge-341/arne-sommer/raku/ch-1.raku
@@ -0,0 +1,20 @@
+#! /usr/bin/env raku
+
+unit sub MAIN (:s(:$str) where $str ~~ /^ <[a..z A..Z \s]>+ $/,
+               :k(:$keys) where $keys ~~ /^ <[a..z]>* $/,
+               :v(:$verbose));
+
+my @words     = $str.lc.words;
+my @keys      = $keys.lc.comb;
+my @typeable  = @words.grep({ .contains(none(@keys)) });
+
+die "Duplicate keys" if @keys.repeated;
+
+if $verbose
+{
+  say ": Words: { @words.map({ "'$_'" }).join(", ") }";
+  say ": Keys: { @keys.map({ "'$_'" }).join(", ") }";
+  say ": Typeable words: { @typeable.map({ "'$_'" }).join(", ") }";
+}
+
+say @typeable.elems;
diff --git a/challenge-341/arne-sommer/raku/ch-2.raku b/challenge-341/arne-sommer/raku/ch-2.raku
new file mode 100755
index 0000000000..6fed7269f9
--- /dev/null
+++ b/challenge-341/arne-sommer/raku/ch-2.raku
@@ -0,0 +1,29 @@
+#! /usr/bin/env raku
+
+unit sub MAIN (:s($str)  where $str.chars > 0,
+               :c($char) where $char.chars == 1,
+               :v(:$verbose));
+
+my $index = $str.index($char);
+
+if $index
+{
+  my $pre     = $str.substr(0, $index +1);
+  my $flipped = $pre.flip;
+  my $post    = $str.substr($index +1);
+
+  if $verbose
+  {
+    say ": Index: $index";
+    say ": Pre: '$pre'";
+    say ": Flipped: '$flipped'";
+    say ": Post: '$post'"; 
+  }
+
+  say $flipped ~ $post; 
+}
+else
+{
+  say $str;
+}
+
diff --git a/challenge-341/arne-sommer/raku/reverse-prefix b/challenge-341/arne-sommer/raku/reverse-prefix
new file mode 100755
index 0000000000..6fed7269f9
--- /dev/null
+++ b/challenge-341/arne-sommer/raku/reverse-prefix
@@ -0,0 +1,29 @@
+#! /usr/bin/env raku
+
+unit sub MAIN (:s($str)  where $str.chars > 0,
+               :c($char) where $char.chars == 1,
+               :v(:$verbose));
+
+my $index = $str.index($char);
+
+if $index
+{
+  my $pre     = $str.substr(0, $index +1);
+  my $flipped = $pre.flip;
+  my $post    = $str.substr($index +1);
+
+  if $verbose
+  {
+    say ": Index: $index";
+    say ": Pre: '$pre'";
+    say ": Flipped: '$flipped'";
+    say ": Post: '$post'"; 
+  }
+
+  say $flipped ~ $post; 
+}
+else
+{
+  say $str;
+}
+