Task 1 done

1 files changed, 18 insertions, 0 deletions

diff --git a/challenge-198/luca-ferrari/raku/ch-1.p6 b/challenge-198/luca-ferrari/raku/ch-1.p6
new file mode 100644
index 0000000000..5b038cd0f1
--- /dev/null
+++ b/challenge-198/luca-ferrari/raku/ch-1.p6
@@ -0,0 +1,18 @@
+#!raku
+
+sub MAIN( *@list where { @list.elems == @list.grep( * ~~ Int ).elems } ) {
+    my @sorted = @list.sort;
+
+
+
+    my %pairs;
+    for 1 ..^ @sorted.elems - 1 {
+	if ( ( @sorted[ $_ ] - @sorted[ $_ - 1 ] ) == ( @sorted[ $_ + 1 ] - @sorted[ $_ ] ) ) {
+	    %pairs{ @sorted[ $_ ] - @sorted[ $_ - 1 ] }.push: @sorted[ $_ - 1, $_ ] , @sorted[ $_,  $_ + 1 ];
+	}
+    }
+
+
+    %pairs{ %pairs.keys.max }.elems.say;
+
+}