challenge 262, raku solutions

4 files changed, 47 insertions, 0 deletions

diff --git a/challenge-262/feng-chang/raku/ch-1.raku b/challenge-262/feng-chang/raku/ch-1.raku
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index 0000000000..e1b106e464
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+++ b/challenge-262/feng-chang/raku/ch-1.raku
@@ -0,0 +1,6 @@
+#!/bin/env raku
+
+unit sub MAIN(*@ints);
+
+my \posis = +@ints.grep(*>0);
+put max(posis, +@ints - posis);
diff --git a/challenge-262/feng-chang/raku/ch-1a.raku b/challenge-262/feng-chang/raku/ch-1a.raku
new file mode 100755
index 0000000000..4b0b8f4ea7
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+++ b/challenge-262/feng-chang/raku/ch-1a.raku
@@ -0,0 +1,8 @@
+#!/bin/env raku
+
+unit sub MAIN(*@ints);
+
+@ints                         ==>
+grep(* > 0)                   ==>
+my @v; max(+@v, +@ints - +@v) ==>
+put()
diff --git a/challenge-262/feng-chang/raku/ch-2.raku b/challenge-262/feng-chang/raku/ch-2.raku
new file mode 100755
index 0000000000..97972e706b
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+++ b/challenge-262/feng-chang/raku/ch-2.raku
@@ -0,0 +1,6 @@
+#!/bin/env raku
+
+unit sub MAIN(*@ints);
+
+my \k = @ints.pop;
+put +(^+@ints).combinations(2).grep(-> (\a,\b) { @ints[a] == @ints[b] and a*b %% k });
diff --git a/challenge-262/feng-chang/raku/test.raku b/challenge-262/feng-chang/raku/test.raku
new file mode 100755
index 0000000000..6492833931
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+++ b/challenge-262/feng-chang/raku/test.raku
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+#!/bin/env raku
+
+# The Weekly Challenge 262
+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, Max Positive Negative
+pwc-test './ch-1.raku', <-- -3 1 2 -1 3 -2 4>, 4, 'Max Positive Negative: (-3,1,2,-1,3,-2,4) => 4';
+pwc-test './ch-1.raku', <-- -1 -2 -3 1>,       3, 'Max Positive Negative: (-1,-2,-3,1)       => 3';
+pwc-test './ch-1.raku', <-- 1 2>,              2, 'Max Positive Negative: (1,2)              => 2';
+
+pwc-test './ch-1a.raku', <-- -3 1 2 -1 3 -2 4>, 4, 'Max Positive Negative: (-3,1,2,-1,3,-2,4) => 4';
+pwc-test './ch-1a.raku', <-- -1 -2 -3 1>,       3, 'Max Positive Negative: (-1,-2,-3,1)       => 3';
+pwc-test './ch-1a.raku', <-- 1 2>,              2, 'Max Positive Negative: (1,2)              => 2';
+
+# Task 2, Count Equal Divisible
+pwc-test './ch-2.raku', <3 1 2 2 2 1 3>, 2, 4, 'Count Equal Divisible: @ints=(3,1,2,2,2,1,3), $k=2 => 4';
+pwc-test './ch-2.raku', <1 2 3>,         1, 0, 'Count Equal Divisible: @ints=(1,2,3), $k=1         => 0';