Arne Sommer

5 files changed, 93 insertions, 0 deletions

diff --git a/challenge-195/arne-sommer/blog.txt b/challenge-195/arne-sommer/blog.txt
new file mode 100644
index 0000000000..667787f742
--- /dev/null
+++ b/challenge-195/arne-sommer/blog.txt
@@ -0,0 +1 @@
+https://raku-musings.com/especially-even.html
diff --git a/challenge-195/arne-sommer/raku/ch-1.raku b/challenge-195/arne-sommer/raku/ch-1.raku
new file mode 100755
index 0000000000..172446b32e
--- /dev/null
+++ b/challenge-195/arne-sommer/raku/ch-1.raku
@@ -0,0 +1,19 @@
+#! /usr/bin/env raku
+
+unit sub MAIN (Int $n where $n > 0, :v(:$verbose));
+
+my $count = 0;
+
+for 1 .. $n -> $candidate
+{
+  my $special = is-special($candidate);
+  $count++ if $special;
+  say ": $candidate { "special" if $special }" if $verbose;
+}
+
+say $count;
+
+sub is-special ($integer)
+{
+  return all($integer.comb.Bag.values) == 1;
+}
diff --git a/challenge-195/arne-sommer/raku/ch-2.raku b/challenge-195/arne-sommer/raku/ch-2.raku
new file mode 100755
index 0000000000..0f6a8728b2
--- /dev/null
+++ b/challenge-195/arne-sommer/raku/ch-2.raku
@@ -0,0 +1,27 @@
+#! /usr/bin/env raku
+
+unit sub MAIN (*@list where @list.elems > 0 && all(@list) ~~ /^<[1..9]><[0..9]>*$/, :v(:$verbose));
+
+my @even = @list.grep: * %% 2;
+
+if @even.elems
+{
+  my $bag    = @even.Bag;
+  my $max    = $bag.values.max;
+  my $res    = $bag.grep({ $_.value == $max });
+  my @sorted = $res>>.key.sort;
+
+  if $verbose
+  {
+    say ":Even: @even[]";
+    say ":Max: $max";
+    say ":Sorted: @sorted[]";
+  }
+
+  say @sorted.first;
+}
+else
+{
+  say ":No even integers" if $verbose;
+  say -1;
+}
diff --git a/challenge-195/arne-sommer/raku/most-frequent-even b/challenge-195/arne-sommer/raku/most-frequent-even
new file mode 100755
index 0000000000..0f6a8728b2
--- /dev/null
+++ b/challenge-195/arne-sommer/raku/most-frequent-even
@@ -0,0 +1,27 @@
+#! /usr/bin/env raku
+
+unit sub MAIN (*@list where @list.elems > 0 && all(@list) ~~ /^<[1..9]><[0..9]>*$/, :v(:$verbose));
+
+my @even = @list.grep: * %% 2;
+
+if @even.elems
+{
+  my $bag    = @even.Bag;
+  my $max    = $bag.values.max;
+  my $res    = $bag.grep({ $_.value == $max });
+  my @sorted = $res>>.key.sort;
+
+  if $verbose
+  {
+    say ":Even: @even[]";
+    say ":Max: $max";
+    say ":Sorted: @sorted[]";
+  }
+
+  say @sorted.first;
+}
+else
+{
+  say ":No even integers" if $verbose;
+  say -1;
+}
diff --git a/challenge-195/arne-sommer/raku/special-integers b/challenge-195/arne-sommer/raku/special-integers
new file mode 100755
index 0000000000..172446b32e
--- /dev/null
+++ b/challenge-195/arne-sommer/raku/special-integers
@@ -0,0 +1,19 @@
+#! /usr/bin/env raku
+
+unit sub MAIN (Int $n where $n > 0, :v(:$verbose));
+
+my $count = 0;
+
+for 1 .. $n -> $candidate
+{
+  my $special = is-special($candidate);
+  $count++ if $special;
+  say ": $candidate { "special" if $special }" if $verbose;
+}
+
+say $count;
+
+sub is-special ($integer)
+{
+  return all($integer.comb.Bag.values) == 1;
+}