Challenge 216 from RibTips

2 files changed, 131 insertions, 0 deletions

diff --git a/challenge-216/ribtips/perl/ch-1.pl b/challenge-216/ribtips/perl/ch-1.pl
new file mode 100644
index 0000000000..144dbbff2d
--- /dev/null
+++ b/challenge-216/ribtips/perl/ch-1.pl
@@ -0,0 +1,61 @@
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+
+&main;
+
+sub main {
+    print "Test 1: ";
+    my @words=('abc', 'abcd', 'bcd');
+    my $reg = 'AB1 2CD';
+    my $matches=&find_matches(\@words,$reg);
+    &print_output($matches);
+    print "Test 2: ";
+    @words=('job', 'james', 'bjorg');
+    $reg = '007 JB';
+    $matches=&find_matches(\@words,$reg);
+    &print_output($matches);
+    @words=('crack', 'road', 'rac');
+    $reg = 'C7 RA2';
+    $matches=&find_matches(\@words,$reg);
+    print "Test 3: ";
+    &print_output($matches);
+}
+
+sub print_output {
+    my $matches_array=shift;
+    my $matches=join("', '",@$matches_array);
+    print "('$matches')\n";
+}
+
+sub find_matches {
+    my $words=shift;
+    my $reg=shift;
+    my @results=();
+    foreach my $word (@$words) {
+        my $result=&compare_words($reg,$word); 
+        if ($result == 1) {
+            push @results,$word;
+        }
+    }
+    return \@results;
+}
+
+sub compare_words {
+    my $reg=shift;
+    my $word=shift;
+    $reg=lc($reg);
+    my @reg=split//,$reg;
+    foreach my $letter (@reg) {
+        if ($letter =~ m/[a-z]/) {
+            if ($word =~ m/$letter/) {
+                #good 
+            }
+            else {
+                return 0;
+            }
+        }
+    }
+    return 1;
+}
diff --git a/challenge-216/ribtips/perl/ch-2.pl b/challenge-216/ribtips/perl/ch-2.pl
new file mode 100644
index 0000000000..6b9ff38f14
--- /dev/null
+++ b/challenge-216/ribtips/perl/ch-2.pl
@@ -0,0 +1,70 @@
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+use Data::Dumper;
+
+&main;
+
+sub main {
+    my @stickers=('perl','raku','python');
+    my $word='peon';
+    my $count=&how_many(\@stickers,$word);    
+    print "Output: $count\n";
+
+    @stickers=('love','hate','angry');
+    $word='goat';
+    $count=&how_many(\@stickers,$word);    
+    print "Output: $count\n";
+
+    @stickers=('come','nation','delta');
+    $word='accomodation';
+    $count=&how_many(\@stickers,$word);    
+    print "Output: $count\n";
+
+    @stickers=('come','country','delta');
+    $word='accomodation';
+    $count=&how_many(\@stickers,$word);    
+    print "Output: $count\n";
+}
+
+sub how_many {
+    my $stickers=shift;
+    my $word=shift;
+
+    my %sticker_hash=();
+    
+    foreach my $sticker (@$stickers) {
+        foreach my $letter (split//,$sticker) {
+            push @{$sticker_hash{$sticker}{'letters'}},$letter;
+        }
+    }
+
+    my @letters=split//,$word;
+
+    for(my $i=0;$i<scalar(@letters);$i++) {
+        my $found=0;
+        foreach my $sticker (@$stickers) {
+            if (grep(/$letters[$i]/,@{$sticker_hash{$sticker}{'letters'}})) {
+                push @{$sticker_hash{$sticker}{'needed_letters'}},$letters[$i];
+                $found=1;
+                last;
+            }
+        }
+        if ($found == 0) {
+            return 0;
+        }
+    }
+
+    
+    my $sticker_count=0;
+    foreach my $word (%sticker_hash) {
+        if (exists($sticker_hash{$word}{'needed_letters'}) and scalar(@{$sticker_hash{$word}{'needed_letters'}}) > 0) {
+            $sticker_count++;
+            if (scalar(@{$sticker_hash{$word}{'needed_letters'}}) > length($word)) {
+                $sticker_count++;     
+            }
+        }
+    }
+    return $sticker_count;
+}