Merge pull request #10948 from choroba/ech289

Add solutions to 289: Third Maximum & Jumbled Letters by E. Choroba

2 files changed, 56 insertions, 0 deletions

diff --git a/challenge-289/e-choroba/perl/ch-1.pl b/challenge-289/e-choroba/perl/ch-1.pl
new file mode 100755
index 0000000000..0992b840b4
--- /dev/null
+++ b/challenge-289/e-choroba/perl/ch-1.pl
@@ -0,0 +1,27 @@
+#!/usr/bin/perl
+use warnings;
+use strict;
+use experimental qw( signatures );
+
+sub third_maximum(@ints) {
+    my %uniq;
+    @uniq{@ints} = ();
+    my @max3;
+
+    for my $n (keys %uniq) {
+        next if 3 == @max3 && $n <= $max3[2];
+
+        push @max3, $n;
+        @max3 = sort { $b <=> $a } @max3;
+        pop @max3 if @max3 > 3;
+    }
+    return $max3[ 3 == @max3 ? 2 : 0 ]
+}
+
+use Test::More tests => 3 + 1;
+
+is third_maximum(5, 6, 4, 1), 4, 'Example 1';
+is third_maximum(4, 5), 5, 'Example 2';
+is third_maximum (1, 2, 2, 3), 1, 'Example 3';
+
+is third_maximum(1 .. 1000, 1 .. 1000), 998, 'Long';
diff --git a/challenge-289/e-choroba/perl/ch-2.pl b/challenge-289/e-choroba/perl/ch-2.pl
new file mode 100755
index 0000000000..26a649f940
--- /dev/null
+++ b/challenge-289/e-choroba/perl/ch-2.pl
@@ -0,0 +1,29 @@
+#!/usr/bin/perl
+use warnings;
+use strict;
+use experimental qw( signatures );
+
+use List::Util qw{ shuffle };
+
+sub jumbled_letters($text) {
+    $text =~ s/(\w+)/jumble_word($1)/ger
+}
+
+sub jumble_word($word) {
+    my $shuffle_length = length($word) - 2;
+    substr $word, 1, $shuffle_length, join "",
+        shuffle(split //, substr $word, 1, $shuffle_length);
+    return $word
+}
+
+use Test2::V0;
+plan(4);
+
+is jumbled_letters('Perl'), in_set('Perl', 'Prel'), 'Perl';
+
+my $j = jumbled_letters("It doesn't matter.");
+like $j, qr/^It d...n't m....r\.$/, "Characters that don't move";
+is substr($j, 4, 3), in_set(qw( oes ose eos eso seo soe )), 'length 3';
+is substr($j, 12, 4), in_set(qw( atte atet aett etta etat eatt
+                                 ttae ttea taet teat tate teta )),
+    'length 4';