From 2c7ee686d1e2a419cda5160287b61a4f86e77e56 Mon Sep 17 00:00:00 2001
From: Joelle Maslak <jmaslak@antelope.net>
Date: Sat, 14 Sep 2019 21:36:48 -0600
Subject: Joelle's Solutions for 25.1 in Perl 6 & 5.

---
 challenge-025/joelle-maslak/perl5/ch-1.pl | 88 +++++++++++++++++++++++++++++++
 challenge-025/joelle-maslak/perl6/ch-1.p6 | 69 ++++++++++++++++++++++++
 2 files changed, 157 insertions(+)
 create mode 100755 challenge-025/joelle-maslak/perl5/ch-1.pl
 create mode 100755 challenge-025/joelle-maslak/perl6/ch-1.p6

diff --git a/challenge-025/joelle-maslak/perl5/ch-1.pl b/challenge-025/joelle-maslak/perl5/ch-1.pl
new file mode 100755
index 0000000000..92db1edf95
--- /dev/null
+++ b/challenge-025/joelle-maslak/perl5/ch-1.pl
@@ -0,0 +1,88 @@
+#!/usr/bin/env perl
+
+use v5.16;
+use strict;
+use warnings;
+
+# Turn on method signatures
+use feature 'signatures';
+no warnings 'experimental::signatures';
+
+use Parallel::WorkUnit 2.181850;
+
+my @NAMES = qw( audino bagon baltoy banette bidoof braviary bronzor carracosta
+  charmeleon cresselia croagunk darmanitan deino emboar emolga exeggcute
+  gabite girafarig gulpin haxorus heatmor heatran ivysaur jellicent
+  jumpluff kangaskhan kricketune landorus ledyba loudred lumineon lunatone
+  machamp magnezone mamoswine nosepass petilil pidgeotto pikachu pinsir
+  poliwrath poochyena porygon2 porygonz registeel relicanth remoraid
+  rufflet sableye scolipede scrafty seaking sealeo silcoon simisear
+  snivy snorlax spoink starly tirtouga trapinch treecko tyrogue
+  vigoroth vulpix wailord wartortle whismur wingull yamask
+);
+my %NEXTONES;
+
+for my $name (@NAMES) {
+    my $last_letter = substr( $name, -1 );
+    $NEXTONES{$name} = [
+        sort
+        grep { $_ ne $name }
+        grep { substr( $_, 0, 1 ) eq $last_letter } @NAMES
+    ];
+}
+
+MAIN: {
+    my (@longest) = build_longest();
+
+    my $i = 1;
+    for my $path (@longest) {
+        say $i++ . " (" . scalar(@$path) . " elements): " . join ' ', $path->@*;
+    }
+}
+
+sub build_longest() {
+    my $wu = Parallel::WorkUnit->new();
+
+    for my $name (@NAMES) {
+        $wu->async( sub { return build_longest_helper($name) } );
+    }
+    my @results = $wu->waitall();
+
+    my (@best_paths);
+
+    for my $new_path (@results) {
+        if ( ( scalar(@best_paths) == 0 )
+            or scalar( $new_path->[0]->@* ) > scalar( $best_paths[0]->@* ) )
+        {
+            @best_paths = $new_path->@*;
+        } elsif ( scalar( $new_path->[0]->@* ) == scalar( $best_paths[0]->@* ) ) {
+            push @best_paths, $new_path->@*;
+        }
+    }
+
+    return @best_paths;
+}
+
+sub build_longest_helper(@path) {
+    my @best_paths;
+    $best_paths[0] = \@path;
+
+    my @next_possible = $NEXTONES{ $path[-1] }->@*;
+    for my $name ( sort @next_possible ) {
+        next if ( scalar( grep { $_ eq $name } @path ) );
+
+        my @tmppath = @path;
+        push @tmppath, $name;
+
+        my $new_paths = build_longest_helper(@tmppath);
+
+        if ( scalar( $new_paths->[0]->@* ) > scalar( $best_paths[0]->@* ) ) {
+            @best_paths = $new_paths->@*;
+        } elsif ( scalar( $new_paths->[0]->@* ) == scalar( $best_paths[0]->@* ) ) {
+            push @best_paths, $new_paths->@*;
+        }
+    }
+
+    return \@best_paths;
+}
+
diff --git a/challenge-025/joelle-maslak/perl6/ch-1.p6 b/challenge-025/joelle-maslak/perl6/ch-1.p6
new file mode 100755
index 0000000000..2a35474a0d
--- /dev/null
+++ b/challenge-025/joelle-maslak/perl6/ch-1.p6
@@ -0,0 +1,69 @@
+#!/usr/bin/env perl6
+use v6;
+
+my @NAMES = « audino bagon baltoy banette bidoof braviary bronzor carracosta
+    charmeleon cresselia croagunk darmanitan deino emboar emolga exeggcute
+    gabite girafarig gulpin haxorus heatmor heatran ivysaur jellicent
+    jumpluff kangaskhan kricketune landorus ledyba loudred lumineon lunatone
+    machamp magnezone mamoswine nosepass petilil pidgeotto pikachu pinsir
+    poliwrath poochyena porygon2 porygonz registeel relicanth remoraid
+    rufflet sableye scolipede scrafty seaking sealeo silcoon simisear
+    snivy snorlax spoink starly tirtouga trapinch treecko tyrogue
+    vigoroth vulpix wailord wartortle whismur wingull yamask
+»; 
+
+my %NEXTONES;
+for @NAMES -> $name {
+    my $last-letter = $name.comb[*-1];
+    %NEXTONES{$name} = @NAMES.grep( { $^a.comb[0] eq $last-letter } ).grep( { $^a ne $name } ).sort.list;
+}
+
+sub MAIN() {
+    my @longest = build-longest();
+
+    my $i = 1;
+    for @longest -> $path {
+        say "{$i++} ({$path.elems} elements): " ~ $path.map: { $^a.join(" ") };
+    }
+}
+
+multi sub build-longest() {
+    my $c = Channel.new();
+
+    await @NAMES.map: {
+        start { $c.send: [ build-longest( @( $_ ) ) ] }
+    }
+    $c.close;
+
+    my @best-paths;
+    for $c.list -> $new-path {
+        if @best-paths.elems == 0 or $new-path[0].elems > @best-paths[0].elems {
+            @best-paths = @($new-path);
+        } elsif $new-path[0].elems == @best-paths[0].elems {
+            @best-paths.append: @($new-path);
+        }
+    }
+
+    return @best-paths;
+}
+
+multi sub build-longest($path) {
+    my @best-paths = [ $path ];
+
+    my @next-possible = %NEXTONES{$path[*-1]}.list;
+    for (@next-possible ∖ @($path)).keys.sort -> $name {
+        my @tmppath = @($path);
+        @tmppath.append: $name;
+        my $new-paths = build-longest(@tmppath);
+
+        if $new-paths[0].elems > @best-paths[0].elems {
+            @best-paths = @($new-paths);
+        } elsif $new-paths[0].elems == @best-paths[0].elems {
+            @best-paths.append: @($new-paths);
+        }
+    }
+
+    return @best-paths;
+}
+
+
-- 
cgit