5 files changed, 53 insertions, 0 deletions
diff --git a/challenge-320/arne-sommer/blog.txt b/challenge-320/arne-sommer/blog.txt
new file mode 100644
index 0000000000..2126ca62de
--- /dev/null
+++ b/challenge-320/arne-sommer/blog.txt
@@ -0,0 +1 @@
+https://raku-musings.com/count-difference.html
diff --git a/challenge-320/arne-sommer/raku/ch-1.raku b/challenge-320/arne-sommer/raku/ch-1.raku
new file mode 100755
index 0000000000..c681b0be63
--- /dev/null
+++ b/challenge-320/arne-sommer/raku/ch-1.raku
@@ -0,0 +1,11 @@
+#! /usr/bin/env raku
+
+unit sub MAIN (*@ints where @ints.elems > 1 && all(@ints) ~~ Int,
+               :v(:$verbose));
+
+my $pos = @ints.grep( * > 0 ).elems;
+my $neg = @ints.grep( * < 0 ).elems;
+
+say ": There are $pos positive integers\n: There are $neg negative integers" if $verbose;
+
+say ($pos, $neg).max;
diff --git a/challenge-320/arne-sommer/raku/ch-2.raku b/challenge-320/arne-sommer/raku/ch-2.raku
new file mode 100755
index 0000000000..09a472106b
--- /dev/null
+++ b/challenge-320/arne-sommer/raku/ch-2.raku
@@ -0,0 +1,15 @@
+#! /usr/bin/env raku
+
+unit sub MAIN (*@ints where @ints.elems > 0 && all(@ints) ~~ Int && all(@ints) > 0,
+               :v(:$verbose));
+
+my $elem-sum = @ints.sum;
+my $digit-sum = @ints>>.comb>>.sum.sum;
+
+if $verbose
+{
+  say ": Element sum: $elem-sum";
+  say ": Digit sum: $digit-sum";
+}
+
+say abs($elem-sum - $digit-sum);
diff --git a/challenge-320/arne-sommer/raku/maximum-count b/challenge-320/arne-sommer/raku/maximum-count
new file mode 100755
index 0000000000..c681b0be63
--- /dev/null
+++ b/challenge-320/arne-sommer/raku/maximum-count
@@ -0,0 +1,11 @@
+#! /usr/bin/env raku
+
+unit sub MAIN (*@ints where @ints.elems > 1 && all(@ints) ~~ Int,
+               :v(:$verbose));
+
+my $pos = @ints.grep( * > 0 ).elems;
+my $neg = @ints.grep( * < 0 ).elems;
+
+say ": There are $pos positive integers\n: There are $neg negative integers" if $verbose;
+
+say ($pos, $neg).max;
diff --git a/challenge-320/arne-sommer/raku/sum-difference b/challenge-320/arne-sommer/raku/sum-difference
new file mode 100755
index 0000000000..09a472106b
--- /dev/null
+++ b/challenge-320/arne-sommer/raku/sum-difference
@@ -0,0 +1,15 @@
+#! /usr/bin/env raku
+
+unit sub MAIN (*@ints where @ints.elems > 0 && all(@ints) ~~ Int && all(@ints) > 0,
+               :v(:$verbose));
+
+my $elem-sum = @ints.sum;
+my $digit-sum = @ints>>.comb>>.sum.sum;
+
+if $verbose
+{
+  say ": Element sum: $elem-sum";
+  say ": Digit sum: $digit-sum";
+}
+
+say abs($elem-sum - $digit-sum);