3 files changed, 53 insertions, 0 deletions
diff --git a/challenge-251/feng-chang/raku/ch-1.raku b/challenge-251/feng-chang/raku/ch-1.raku
new file mode 100755
index 0000000000..4e95e1ff9b
--- /dev/null
+++ b/challenge-251/feng-chang/raku/ch-1.raku
@@ -0,0 +1,5 @@
+#!/bin/env raku
+
+unit sub MAIN(*@ints);
+
+put [+] gather { take @ints.shift ~ (@ints.pop // '') while @ints };
diff --git a/challenge-251/feng-chang/raku/ch-2.raku b/challenge-251/feng-chang/raku/ch-2.raku
new file mode 100755
index 0000000000..f714985c6d
--- /dev/null
+++ b/challenge-251/feng-chang/raku/ch-2.raku
@@ -0,0 +1,9 @@
+#!/bin/env raku
+
+unit sub MAIN(Str:D $input);
+
+use MONKEY-SEE-NO-EVAL;
+my @matrix;
+EVAL "@matrix = $input";
+
+put @matrix.map({ .min(:kv) }).first({ @matrix[*;.[0]].max == .[1] })[1] // -1;
diff --git a/challenge-251/feng-chang/raku/test.raku b/challenge-251/feng-chang/raku/test.raku
new file mode 100755
index 0000000000..81aa5efb5c
--- /dev/null
+++ b/challenge-251/feng-chang/raku/test.raku
@@ -0,0 +1,39 @@
+#!/bin/env raku
+
+# The Weekly Challenge 251
+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, Concatenation Value
+pwc-test './ch-1.raku', |<6 12 25 1>,     1286, 'Concatenation Value: (6, 12, 25, 1)       => 1286';
+pwc-test './ch-1.raku', |<10 7 31 5 2 2>, 489,  'Concatenation Value: (10, 7, 31, 5, 2, 2) => 489';
+pwc-test './ch-1.raku', |<1 2 10>,        112,  'Concatenation Value: (1, 2, 10)           => 112';
+
+# Task 2, Lucky Numbers
+pwc-test './ch-2.raku',
+    '[3, 7, 8], [9, 11, 13], [15, 16, 17]',
+    15,
+    'Lucky Numbers: [[3, 7, 8], [9, 11, 13], [15, 16, 17]]          => 15';
+pwc-test './ch-2.raku',
+    '[1, 10, 4, 2], [9, 3, 8, 7], [15, 16, 17, 12]',
+    12,
+    'Lucky Numbers: [[1, 10, 4, 2], [9, 3, 8, 7], [15, 16, 17, 12]] => 12';
+pwc-test './ch-2.raku',
+    '[7, 8], [1, 2]',
+    7,
+    'Lucky Numbers: [[7, 8], [1, 2]]                                => 7';
+pwc-test './ch-2.raku',
+    '[1, 3], [4, 2]',
+    -1,
+    'Lucky Numbers: [[1, 3], [4, 2]]                                => -1';
+
+done-testing;