Merge pull request #1183 from ndelucca/challenge-045/ndelucca

challenge045-ndelucca

2 files changed, 89 insertions, 0 deletions

diff --git a/challenge-045/ndelucca/perl5/ch-1.pl b/challenge-045/ndelucca/perl5/ch-1.pl
new file mode 100644
index 0000000000..2ff5da8876
--- /dev/null
+++ b/challenge-045/ndelucca/perl5/ch-1.pl
@@ -0,0 +1,67 @@
+#!/usr/bin/perl
+
+# Square Secret Code
+
+# The squate secret code mechanism first removes any space from the original message.
+# Then it lays down the message in a row of 8 columns.
+# The coded message is then obtained by reading down the columns going left to right.
+
+# For example, the message is “The quick brown fox jumps over the lazy dog”.
+
+# Then the message would be laid out as below:
+
+# thequick
+# brownfox
+# jumpsove
+# rthelazy
+# dog
+
+# The code message would be as below:
+
+# tbjrd hruto eomhg qwpe unsl ifoa covz kxey
+
+# Write a script that accepts a message from command line and prints the equivalent coded message.
+
+use strict;
+use warnings;
+
+die "You must insert a message to encode.\n" unless @ARGV;
+
+my $message = shift;
+my $columns = shift || 8;
+
+my @matrix = ();
+my $code = '';
+
+# We clean up the message a bit
+$message =~ s/\s+//g;
+
+# Then we must turn the message into an array of arrays
+my @rows = unpack "(A$columns)*", lc $message;
+
+foreach my $word ( @rows ){
+    my @chars = split //, $word;
+    push @matrix, \@chars;
+}
+
+# Now we simply print it in the order we want
+for (0..$columns){
+
+    for my $row( @matrix ){
+        $code .= shift @$row || '';
+    }
+
+    $code .= " ";
+}
+
+print "$code\n";
+
+# perl ch-1.pl "The quick brown fox jumps over the lazy dog"
+# tbjrd hruto eomhg qwpe unsl ifoa covz kxey
+
+# perl ch-1.pl "The quick brown fox jumps over the lazy dog" 15
+# txz hjy eud qmo upg is co kv be rr ot wh ne fl oa
+
+# perl ch-1.pl "Maybe this code could be better?"
+# msle acdr yob? bde eeb tce hot iut
+
diff --git a/challenge-045/ndelucca/perl5/ch-2.pl b/challenge-045/ndelucca/perl5/ch-2.pl
new file mode 100644
index 0000000000..700805b210
--- /dev/null
+++ b/challenge-045/ndelucca/perl5/ch-2.pl
@@ -0,0 +1,22 @@
+#!/usr/bin/perl
+# Source Dumper
+
+# Write a script that dumps its own source code.
+
+# For example, say, the script name is ch-2.pl then the following command should returns nothing.
+
+# $ perl ch-2.pl | diff - ch-2.pl
+
+use strict;
+use warnings;
+
+# We can add whatever we want, anywhere
+
+open(my $fh, "<", __FILE__) || die "Couldn't open $0 for reading because: $! ";
+
+print <$fh>;
+
+close($fh);
+
+# perl ch-2.pl | diff - ch-2.pl
+#