solutions week 333

2 files changed, 50 insertions, 0 deletions

diff --git a/challenge-333/wambash/raku/ch-1.raku b/challenge-333/wambash/raku/ch-1.raku
new file mode 100644
index 0000000000..38641156f3
--- /dev/null
+++ b/challenge-333/wambash/raku/ch-1.raku
@@ -0,0 +1,29 @@
+#!/usr/bin/env raku
+
+sub straight-line (+@list) {
+    my ($M, $N) = @list.squish( with => &[eqv] );
+    return True without $N;
+
+    my $a=$M[0]-$N[0];
+    my $b=$M[1]-$N[1];
+
+    @list
+    andthen .map: {$b * .[0] - $a * .[1]}\
+    andthen  [==] $_
+}
+
+multi MAIN (Bool :test($)!) {
+    use Test;
+    is straight-line((2,1),(2,3),(2,5)), True;
+    is straight-line((1,4),(3,4),(10,4)), True;
+    is straight-line((0,0),(1,1),(2,3)), False;
+    is straight-line((1,1),(2,2),(3,3)), True;
+    is straight-line((1,1),(1,1),(1,1)), True;
+    is straight-line((1,1),(1,1),(2,2),(3,4)), False;
+    is straight-line((1_000_000,1_000_000),(2_000_000,2_000_000),(3_000_000,3_000_000)), True;
+    done-testing;
+}
+
+multi MAIN (+list) {
+    say straight-line  list.map: *.split(',').cache;
+}
diff --git a/challenge-333/wambash/raku/ch-2.raku b/challenge-333/wambash/raku/ch-2.raku
new file mode 100644
index 0000000000..10110f03ff
--- /dev/null
+++ b/challenge-333/wambash/raku/ch-2.raku
@@ -0,0 +1,21 @@
+#!/usr/bin/env raku
+
+sub duplicate-zeros (+ints) {
+    ints
+    andthen .map: { $_ == 0 ?? slip 0,0 !! $_ }\
+    andthen .head: ints.elems
+}
+
+multi MAIN (Bool :test($)!) {
+    use Test;
+    is duplicate-zeros(1, 0, 2, 3, 0, 4, 5, 0), (1, 0, 0, 2, 3, 0, 0, 4);
+    is duplicate-zeros(1, 2, 3), (1, 2, 3,);
+    is duplicate-zeros(1, 2, 3, 0), (1, 2, 3,0);
+    is duplicate-zeros(0,0,1, 2), (0,0,0,0);
+    is duplicate-zeros(1, 2, 0, 3,4), (1, 2, 0,0,3);
+    done-testing;
+}
+
+multi MAIN (+ints) {
+    put duplicate-zeros ints;
+}