Solution to task 1

1 files changed, 68 insertions, 0 deletions

diff --git a/challenge-224/jo-37/perl/ch-1.pl b/challenge-224/jo-37/perl/ch-1.pl
new file mode 100755
index 0000000000..d402e1bc5e
--- /dev/null
+++ b/challenge-224/jo-37/perl/ch-1.pl
@@ -0,0 +1,68 @@
+#!/usr/bin/perl -s
+
+use v5.24;
+use Test2::V0;
+
+our ($tests, $examples);
+
+{
+    # Import the solution from week #221.
+    package CH_221;
+
+    # Without arguments, the called program will die with a usage
+    # message.  Capture this message as success indicator.
+    local @ARGV;
+    do '../../../challenge-221/jo-37/perl/ch-1.pl';
+    die $@ unless $@ =~ /^usage: $0/;
+}
+
+run_tests() if $tests || $examples;	# does not return
+
+die <<EOS unless @ARGV == 2;
+usage: $0 [-examples] [-tests] [SOURCE TARGET]
+
+-examples
+    run the examples from the challenge
+ 
+-tests
+    run some tests
+
+SOURCE
+    source string
+
+TARGET
+    check if the target can be created from the characters of SOURCE
+
+EOS
+
+
+### Input and Output
+
+say CH_221::good_string_length(@ARGV) ? 'true' : 'false';
+
+
+### Implementation
+
+# This task is a special case of task 1 from week 221.  There's a single
+# word to check and here we just need to see if the result is nonzero.
+
+
+### Examples and tests
+
+sub run_tests {
+    SKIP: {
+        skip "examples" unless $examples;
+
+        ok !CH_221::good_string_length('abc', 'xyz'), 'example 1';
+        ok  CH_221::good_string_length('scriptinglanguage', 'perl'),
+            'example 2';
+        ok  CH_221::good_string_length('aabbcc', 'abc'), 'example 3';
+    }
+
+    SKIP: {
+        skip "tests" unless $tests;
+	}
+
+    done_testing;
+    exit;
+}