5 files changed, 131 insertions, 0 deletions
diff --git a/challenge-208/arne-sommer/blog.txt b/challenge-208/arne-sommer/blog.txt
new file mode 100644
index 0000000000..650295a3fd
--- /dev/null
+++ b/challenge-208/arne-sommer/blog.txt
@@ -0,0 +1 @@
+https://raku-musings.com/mis-ing.html
diff --git a/challenge-208/arne-sommer/raku/ch-1.raku b/challenge-208/arne-sommer/raku/ch-1.raku
new file mode 100755
index 0000000000..dde51d836c
--- /dev/null
+++ b/challenge-208/arne-sommer/raku/ch-1.raku
@@ -0,0 +1,39 @@
+#! /usr/bin/env raku
+
+unit sub MAIN ($list1 = "Perl Raku Love", $list2 = "Raku Perl Hate", :v($verbose));
+
+my @list1 = $list1.words;
+my @list2 = $list2.words;
+
+die "Repetitions in list1" if @list1.elems != @list1.unique.elems;
+die "Repetitions in list2" if @list2.elems != @list2.unique.elems;
+
+my $mis   = Inf;
+my @common;
+
+for ^@list1.elems -> $i
+{
+  next unless @list1[$i] eq any(@list2);
+  
+  for ^@list2.elems -> $j
+  {
+    if @list1[$i] eq @list2[$j]
+    {
+      my $sum = $i + $j;
+      say ": Index sum of \"@list1[$i]\": $i + $j = $sum" if $verbose;
+
+      next if $sum > $mis;
+
+      @common = () if $sum < $mis;
+      $mis    = $sum;
+
+      @common.push: @list1[$i];
+
+    }
+  }
+}
+
+say @common.elems
+ ?? "(" ~ @common.map({ "\"$_\"" }).join(", ") ~ ")" 
+ !! "()";
+
diff --git a/challenge-208/arne-sommer/raku/ch-2.raku b/challenge-208/arne-sommer/raku/ch-2.raku
new file mode 100755
index 0000000000..16daa23449
--- /dev/null
+++ b/challenge-208/arne-sommer/raku/ch-2.raku
@@ -0,0 +1,26 @@
+#! /usr/bin/env raku
+
+unit sub MAIN ($nums = "1 2 2 4", :v($verbose));
+
+my @nums = $nums.words;
+
+die "Not increasing values" unless [<=] @nums;
+
+my $duplicate = @nums.repeated;
+
+say ": Duplicate: $duplicate" if $verbose;
+
+my $current = @nums.shift;
+
+while (@nums.elems)
+{
+  if @nums[0] != $current + 1
+  {
+    say ": Missing:  {  $current + 1 }" if $verbose;
+    say "($duplicate, { $current + 1 })";
+    exit;
+  }
+  $current = @nums.shift;
+}
+
+say "-1";
diff --git a/challenge-208/arne-sommer/raku/duplicate-and-missing b/challenge-208/arne-sommer/raku/duplicate-and-missing
new file mode 100755
index 0000000000..16daa23449
--- /dev/null
+++ b/challenge-208/arne-sommer/raku/duplicate-and-missing
@@ -0,0 +1,26 @@
+#! /usr/bin/env raku
+
+unit sub MAIN ($nums = "1 2 2 4", :v($verbose));
+
+my @nums = $nums.words;
+
+die "Not increasing values" unless [<=] @nums;
+
+my $duplicate = @nums.repeated;
+
+say ": Duplicate: $duplicate" if $verbose;
+
+my $current = @nums.shift;
+
+while (@nums.elems)
+{
+  if @nums[0] != $current + 1
+  {
+    say ": Missing:  {  $current + 1 }" if $verbose;
+    say "($duplicate, { $current + 1 })";
+    exit;
+  }
+  $current = @nums.shift;
+}
+
+say "-1";
diff --git a/challenge-208/arne-sommer/raku/minimum-index-sum b/challenge-208/arne-sommer/raku/minimum-index-sum
new file mode 100755
index 0000000000..dde51d836c
--- /dev/null
+++ b/challenge-208/arne-sommer/raku/minimum-index-sum
@@ -0,0 +1,39 @@
+#! /usr/bin/env raku
+
+unit sub MAIN ($list1 = "Perl Raku Love", $list2 = "Raku Perl Hate", :v($verbose));
+
+my @list1 = $list1.words;
+my @list2 = $list2.words;
+
+die "Repetitions in list1" if @list1.elems != @list1.unique.elems;
+die "Repetitions in list2" if @list2.elems != @list2.unique.elems;
+
+my $mis   = Inf;
+my @common;
+
+for ^@list1.elems -> $i
+{
+  next unless @list1[$i] eq any(@list2);
+  
+  for ^@list2.elems -> $j
+  {
+    if @list1[$i] eq @list2[$j]
+    {
+      my $sum = $i + $j;
+      say ": Index sum of \"@list1[$i]\": $i + $j = $sum" if $verbose;
+
+      next if $sum > $mis;
+
+      @common = () if $sum < $mis;
+      $mis    = $sum;
+
+      @common.push: @list1[$i];
+
+    }
+  }
+}
+
+say @common.elems
+ ?? "(" ~ @common.map({ "\"$_\"" }).join(", ") ~ ")" 
+ !! "()";
+