Merge pull request #5306 from andemark/branch-for-challenge-141

Challenge 141 Solutions (Raku)

2 files changed, 34 insertions, 0 deletions

diff --git a/challenge-141/mark-anderson/raku/ch-1.raku b/challenge-141/mark-anderson/raku/ch-1.raku
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+++ b/challenge-141/mark-anderson/raku/ch-1.raku
@@ -0,0 +1,16 @@
+#!/usr/bin/env raku
+
+use Prime::Factor;
+use Test;
+plan 2;
+
+is-deeply number-divisors(8)[^10], 
+          (24, 30, 40, 42, 54, 56, 66, 70, 78, 88), 'example 1';
+
+is-deeply number-divisors(8)[^10000].tail(5), 
+          (45626, 45627, 45638, 45642, 45646), 'hyper ftw!';
+
+sub number-divisors(\n)
+{
+    (^Inf).hyper.grep({ divisors($_) == n });
+}
diff --git a/challenge-141/mark-anderson/raku/ch-2.raku b/challenge-141/mark-anderson/raku/ch-2.raku
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+++ b/challenge-141/mark-anderson/raku/ch-2.raku
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+#!/usr/bin/env raku
+
+use Test;
+plan 4;
+
+is like-numbers(1234, 2), 9, '1234, 2 = (2 4 12 14 24 34 124 134 234)';
+is like-numbers( 768, 4), 3, ' 768, 4 = (8 76 68)';
+is like-numbers(1008, 2), 6, '1008, 2 = (0 8 10 18 100 108)';
+is like-numbers(7777, 7), 3, '7777, 7 = (7 77 777)';
+
+sub like-numbers($m is copy, \n)
+{
+    $m .= comb;
+    $m.combinations(1..^+$m).map(+*.join)
+                            .grep(* %% n)
+        	            .unique
+			    .Int;
+}