challenge 261, raku solutions

3 files changed, 37 insertions, 0 deletions

diff --git a/challenge-261/feng-chang/raku/ch-1.raku b/challenge-261/feng-chang/raku/ch-1.raku
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+++ b/challenge-261/feng-chang/raku/ch-1.raku
@@ -0,0 +1,5 @@
+#!/bin/env raku
+
+unit sub MAIN(*@ints);
+
+put @ints.sum - @ints».comb».sum.sum;
diff --git a/challenge-261/feng-chang/raku/ch-2.raku b/challenge-261/feng-chang/raku/ch-2.raku
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+++ b/challenge-261/feng-chang/raku/ch-2.raku
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+#!/bin/env raku
+
+unit sub MAIN(*@ints);
+
+my $start = @ints.pop;
+$start *= 2 while @ints.grep($start);
+put $start;
diff --git a/challenge-261/feng-chang/raku/test.raku b/challenge-261/feng-chang/raku/test.raku
new file mode 100755
index 0000000000..d78a96d7db
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+++ b/challenge-261/feng-chang/raku/test.raku
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+#!/bin/env raku
+
+# The Weekly Challenge 261
+use Test;
+
+sub pwc-test(Str:D $script, Bool :$deeply? = False, *@input) {
+    my ($expect, $assertion) = @input.splice(*-2, 2);
+    my $p = run $script, |@input, :out;
+    if $deeply {
+        is-deeply $p.out.slurp(:close).chomp.words.Bag, $expect, $assertion;
+    } else {
+        is $p.out.slurp(:close).chomp, $expect, $assertion;
+    }
+}
+
+# Task 1, Element Digit Sum
+pwc-test './ch-1.raku', <1 2 3 45>,          36, 'Element Digit Sum: (1,2,3,45)           => 36';
+pwc-test './ch-1.raku', <1 12 3>,             9, 'Element Digit Sum: (1,12,3)             => 9';
+pwc-test './ch-1.raku', <1 2 3 4>,            0, 'Element Digit Sum: (1,2,3,4)            => 0';
+pwc-test './ch-1.raku', <236 416 336 350>, 1296, 'Element Digit Sum: (236, 416, 336, 350) => 1296';
+
+# Task 2, Multiply by Two
+pwc-test './ch-2.raku', <5 3 6 1 12>, 3, 24, 'Multiply by Two: @ints=(5,3,6,1,12), $start=3 => 24';
+pwc-test './ch-2.raku', <1 2 4 3>,    1,  8, 'Multiply by Two: @ints=(1,2,4,3),    $start=1 => 8';
+pwc-test './ch-2.raku', <5 6 7>,      2,  2, 'Multiply by Two: @ints=(5,6,7),      $start=2 => 2';