Challenge 116 Solutions (Raku)

2 files changed, 40 insertions, 0 deletions

diff --git a/challenge-116/mark-anderson/raku/ch-1.raku b/challenge-116/mark-anderson/raku/ch-1.raku
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+++ b/challenge-116/mark-anderson/raku/ch-1.raku
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+#!/usr/bin/env raku
+
+use Test;
+plan 5;
+
+is number-sequence(1234),  "1,2,3,4";
+is number-sequence(91011), "9,10,11";
+is number-sequence(10203), "10203";
+is number-sequence(997998999100010011002100310041005), (997..1005).join(",");
+is number-sequence(34567891011123456789101113), "3456789101112,3456789101113";
+
+sub number-sequence($N)
+{
+    for ($N.chars div 2)...1
+    {
+        my $head = $N.substr(0, $_);
+        my $s = [\~] $head...*;
+        my ($k, $v) = $s.first(*.chars >= $N.chars, :kv);
+
+        if $N eq $v
+        {
+            return ($head.Int..$head+$k).join(",");
+        }
+    }
+
+    return $N;
+}
diff --git a/challenge-116/mark-anderson/raku/ch-2.raku b/challenge-116/mark-anderson/raku/ch-2.raku
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+++ b/challenge-116/mark-anderson/raku/ch-2.raku
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+#!/usr/bin/env raku
+
+use Test;
+plan 3;
+
+is sum-of-squares(34), 1;
+is sum-of-squares(50), 1;
+is sum-of-squares(52), 0;
+
+sub sum-of-squares($N)
+{
+    +($N.comb.map(* ** 2).sum.sqrt.narrow ~~ UInt);
+}