Initial 123

2 files changed, 66 insertions, 0 deletions

diff --git a/challenge-123/mark-anderson/raku/ch-1.raku b/challenge-123/mark-anderson/raku/ch-1.raku
new file mode 100644
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+++ b/challenge-123/mark-anderson/raku/ch-1.raku
@@ -0,0 +1,37 @@
+#!/usr/bin/env raku
+
+# https://www.geeksforgeeks.org/ugly-numbers/
+
+use Test;
+plan 4;
+
+is ugly(7),   8;
+is ugly(10),  12;
+is ugly(15),  24;
+is ugly(150), 5832;
+
+sub ugly($n where * >= 1)
+{
+    my ($i2, $i3, $i5);
+
+    $i2 = $i3 = $i5 = 0; 
+         
+    my @uglies = [1];
+
+    for 1..^$n
+    {
+        my $m2 = @uglies[$i2] * 2;
+        my $m3 = @uglies[$i3] * 3;
+        my $m5 = @uglies[$i5] * 5;
+
+        my $min = min($m2, $m3, $m5);
+
+        $i2++ if $min == $m2;    
+        $i3++ if $min == $m3; 
+        $i5++ if $min == $m5;           
+
+        @uglies.push($min);
+    }
+
+    @uglies[*-1];
+}
diff --git a/challenge-123/mark-anderson/raku/ch-2.raku b/challenge-123/mark-anderson/raku/ch-2.raku
new file mode 100644
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+++ b/challenge-123/mark-anderson/raku/ch-2.raku
@@ -0,0 +1,29 @@
+#!/usr/bin/env raku
+
+use Test;
+plan 3;
+
+is square((10, 20), (20, 20),  (20, 10),  (10, 10)),   1;
+is square((12, 24), (16, 10),  (20, 12),  (18, 16)),   0;
+is square((10, 20), (10, -10), (-20, 20), (-20, -10)), 1;
+
+sub square(**@pts)
+{
+    @pts .= sort;
+
+    return + (diagonals-equal() and sides-equal());
+
+    sub diagonals-equal
+    {
+        [==] (@pts[3;0] - @pts[0;0])² + (@pts[3;1] - @pts[0;1])²,
+             (@pts[2;0] - @pts[1;0])² + (@pts[2;1] - @pts[1;1])²;
+    }
+
+    sub sides-equal
+    {
+        [==] (@pts[1;0] - @pts[0;0])² + (@pts[1;1] - @pts[0;1])²,
+             (@pts[2;0] - @pts[0;0])² + (@pts[2;1] - @pts[0;1])²,
+             (@pts[3;0] - @pts[2;0])² + (@pts[3;1] - @pts[2;1])²,
+             (@pts[3;0] - @pts[1;0])² + (@pts[3;1] - @pts[1;1])²;
+    }
+}