Challenge 136 Solutions (Raku)

2 files changed, 33 insertions, 0 deletions

diff --git a/challenge-136/mark-anderson/raku/ch-1.raku b/challenge-136/mark-anderson/raku/ch-1.raku
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+++ b/challenge-136/mark-anderson/raku/ch-1.raku
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+#!/usr/bin/env raku
+
+use Test;
+plan 3;
+
+is two-friendly(8,  24), 1, 'Example 1';
+is two-friendly(26, 39), 0, 'Example 2';
+is two-friendly(4,  10), 1, 'Example 3';
+
+sub two-friendly($m, $n)
+{
+    my $gcd = $m gcd $n;
+    +(log2($gcd).narrow ~~ UInt);
+}
diff --git a/challenge-136/mark-anderson/raku/ch-2.raku b/challenge-136/mark-anderson/raku/ch-2.raku
new file mode 100644
index 0000000000..dff7f97a72
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+++ b/challenge-136/mark-anderson/raku/ch-2.raku
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+#!/usr/bin/env raku
+
+use Test;
+plan 3;
+
+for 16 => 4, 9 => 2, 15 => 2
+{
+    is +fibonacci-sums(.key), .value, "Example " ~ ++$; 
+}
+
+sub fibonacci-sums($n)
+{
+    my $fib := 1, 2, { $^a + $^b } ... { $n - $^a < $^b };
+   
+    gather for $fib.combinations.skip
+    {
+        .take if .sum == $n;
+    }
+}