From 5b1a2e347f263c66734b2f8a5cd677d6d4709213 Mon Sep 17 00:00:00 2001
From: Roger Bell_West <roger@firedrake.org>
Date: Mon, 29 Jul 2019 08:56:36 +0100
Subject: Challenge 19 answers

---
 challenge-019/roger-bell-west/perl5/1.pl | 19 +++++++++++++++
 challenge-019/roger-bell-west/perl5/2.pl | 41 ++++++++++++++++++++++++++++++++
 2 files changed, 60 insertions(+)
 create mode 100755 challenge-019/roger-bell-west/perl5/1.pl
 create mode 100755 challenge-019/roger-bell-west/perl5/2.pl

diff --git a/challenge-019/roger-bell-west/perl5/1.pl b/challenge-019/roger-bell-west/perl5/1.pl
new file mode 100755
index 0000000000..9d5f470d49
--- /dev/null
+++ b/challenge-019/roger-bell-west/perl5/1.pl
@@ -0,0 +1,19 @@
+#! /usr/bin/perl
+
+use strict;
+use warnings;
+
+# Write a script to display months from the year 1900 to 2019 where
+# you find 5 weekends i.e. 5 Friday, 5 Saturday and 5 Sunday.
+
+use Time::Local;
+use POSIX qw(strftime);
+
+foreach my $y (1900..2019) {
+  foreach my $m (1,3,5,7,8,10,12) {
+    my @d=gmtime(timegm(0,0,0,1,$m-1,$y));
+    if ($d[6]==5) {
+      print strftime('%B %Y',@d),"\n";
+    }
+  }
+}
diff --git a/challenge-019/roger-bell-west/perl5/2.pl b/challenge-019/roger-bell-west/perl5/2.pl
new file mode 100755
index 0000000000..4d1ae70960
--- /dev/null
+++ b/challenge-019/roger-bell-west/perl5/2.pl
@@ -0,0 +1,41 @@
+#! /usr/bin/perl
+
+use strict;
+use warnings;
+
+# Write a script that can wrap the given paragraph at a specified
+# column using the greedy algorithm.
+
+use Getopt::Std;
+
+my %o=(w => 72);
+getopts('w:',\%o);
+
+my $s=$o{w};
+my @w;
+while (<>) {
+  chomp;
+  if ($_ eq '') {
+    if (@w) {
+      print join(' ',@w),"\n";
+      @w=();
+      $s=$o{w};
+    }
+    print "\n";
+  } else {
+    foreach my $w (split ' ',$_) {
+      my $lw=length($w);
+      if ($lw+1 > $s) {
+        print join(' ',@w),"\n";
+        @w=($w);
+        $s=$o{w}-$lw;
+      } else {
+        push @w,$w;
+        $s-=($lw+1);
+      }
+    }
+  }
+}
+if (@w) {
+  print join(' ',@w),"\n";
+}
-- 
cgit