From 86dc29940123f535a2e2c8afd0a18684f3b1ddc0 Mon Sep 17 00:00:00 2001
From: Roger Bell_West <roger@firedrake.org>
Date: Mon, 18 May 2020 09:16:26 +0100
Subject: Solutions for challenge #61.

---
 challenge-061/roger-bell-west/perl/ch-1.pl | 24 ++++++++++++++++++++++++
 challenge-061/roger-bell-west/perl/ch-2.pl | 27 +++++++++++++++++++++++++++
 challenge-061/roger-bell-west/raku/ch-1.p6 | 20 ++++++++++++++++++++
 3 files changed, 71 insertions(+)
 create mode 100755 challenge-061/roger-bell-west/perl/ch-1.pl
 create mode 100755 challenge-061/roger-bell-west/perl/ch-2.pl
 create mode 100755 challenge-061/roger-bell-west/raku/ch-1.p6

diff --git a/challenge-061/roger-bell-west/perl/ch-1.pl b/challenge-061/roger-bell-west/perl/ch-1.pl
new file mode 100755
index 0000000000..79664f1b1b
--- /dev/null
+++ b/challenge-061/roger-bell-west/perl/ch-1.pl
@@ -0,0 +1,24 @@
+#! /usr/bin/perl
+
+use strict;
+use warnings;
+use integer;
+
+my @list=@ARGV;
+unless (@list) {
+  @list=(2,5,-1,3);
+}
+
+my ($mxp,$a,$b);
+
+foreach my $ai (0..$#list) {
+  foreach my $bi ($ai..$#list) {
+    my $p=1;
+    map {$p*=$_} @list[$ai..$bi];
+    if (!defined $mxp || $p > $mxp) {
+      ($mxp,$a,$b)=($p,$ai,$bi);
+    }
+  }
+}
+
+print join(' * ',@list[$a..$b]),' = ',$mxp,"\n";
diff --git a/challenge-061/roger-bell-west/perl/ch-2.pl b/challenge-061/roger-bell-west/perl/ch-2.pl
new file mode 100755
index 0000000000..5b1053794d
--- /dev/null
+++ b/challenge-061/roger-bell-west/perl/ch-2.pl
@@ -0,0 +1,27 @@
+#! /usr/bin/perl
+
+use strict;
+use warnings;
+
+use List::Util qw(min);
+
+my $in=$ARGV[0] || '25525511135';
+
+my @buf=([$in]);
+while (my $t=shift @buf) {
+  my @l=@{$t};
+  my $r=pop @l;
+  if ($r eq '' && scalar @l == 4) {
+    print join('.',@l),"\n";
+  }
+  if (scalar @l >= 4) {
+    next;
+  }
+  foreach my $fl (1..min(3,length($r))) {
+    my $a=substr($r,0,$fl);
+    if ($a <= 255 && ($a==0 || $a =~ /^[1-9]/)) {
+      my $b=substr($r,$fl);
+      push @buf,[@l,substr($r,0,$fl),$b];
+    }
+  }
+}
diff --git a/challenge-061/roger-bell-west/raku/ch-1.p6 b/challenge-061/roger-bell-west/raku/ch-1.p6
new file mode 100755
index 0000000000..48a5baeea9
--- /dev/null
+++ b/challenge-061/roger-bell-west/raku/ch-1.p6
@@ -0,0 +1,20 @@
+#! /usr/bin/perl6
+
+my @list=@*ARGS;
+unless (@list) {
+  @list=(2,5,-1,3);
+}
+
+my ($mxp,$a,$b);
+
+for (0..@list.end) -> $ai {
+  for ($ai..@list.end) -> $bi {
+    my $p=1;
+    map {$p*=$_}, @list[$ai..$bi];
+    if (!$mxp.defined || $p > $mxp) {
+      ($mxp,$a,$b)=($p,$ai,$bi);
+    }
+  }
+}
+
+say join(' * ',@list[$a..$b]),' = ',$mxp;
-- 
cgit