w327 - Task 1 & 2 (Perl)

2 files changed, 73 insertions, 0 deletions

diff --git a/challenge-327/perlboy1967/perl/ch1.pl b/challenge-327/perlboy1967/perl/ch1.pl
new file mode 100755
index 0000000000..3cc274747d
--- /dev/null
+++ b/challenge-327/perlboy1967/perl/ch1.pl
@@ -0,0 +1,34 @@
+#!/bin/perl
+
+=pod
+
+The Weekly Challenge - 327
+L<https://theweeklychallenge.org/blog/perl-weekly-challenge-327#TASK1>
+
+Author: Niels 'PerlBoy' van Dijke
+
+Task 1: Missing Integers
+Submitted by: Mohammad Sajid Anwar
+
+You are given an array of n integers.
+
+Write a script to find all the missing integers in the range 1..n in the given array.
+
+=cut
+
+use Test2::V0 qw(-no_srand);
+use exact 'v5.32', -signatures;
+
+use List::MoreUtils qw(indexes);
+
+sub missingIntegers (@ints) {
+  my @i = (0) x @ints;
+  $i[$_ - 1]++ for (@ints);
+  map { $_ + 1 } indexes { $_ == 0 } @i;
+}
+
+is([missingIntegers(1,2,1,3,2,5)],[4,6],'Example 1');
+is([missingIntegers(1,1,1)],[2,3],'Example 2');
+is([missingIntegers(2,2,1)],[3],'Example 3');
+
+done_testing;
diff --git a/challenge-327/perlboy1967/perl/ch2.pl b/challenge-327/perlboy1967/perl/ch2.pl
new file mode 100755
index 0000000000..008d5c34f1
--- /dev/null
+++ b/challenge-327/perlboy1967/perl/ch2.pl
@@ -0,0 +1,39 @@
+#!/bin/perl
+
+=pod
+
+The Weekly Challenge - 327
+L<https://theweeklychallenge.org/blog/perl-weekly-challenge-327#TASK2>
+
+Author: Niels 'PerlBoy' van Dijke
+
+Task 2: MAD
+Submitted by: Mohammad Sajid Anwar
+
+You are given an array of distinct integers.
+
+Write a script to find all pairs of elements with minimum absolute difference
+(MAD) of any two elements.
+
+=cut
+
+use Test2::V0 qw(-no_srand);
+use exact 'v5.32', -signatures;
+
+use Algorithm::Combinatorics qw(combinations);
+use List::Util qw(min);
+
+sub getMad (@ints) {
+  my %ad;
+  for my $pair (combinations(\@ints,2)) {
+    $pair = [sort { $a <=> $b } @$pair];
+    push(@{$ad{$pair->[1] - $pair->[0]}},$pair);
+  }
+  sort {$$a[0] <=> $$b[0]} @{$ad{min keys %ad}};
+}
+
+is([getMad(4,1,2,3)],[[1,2],[2,3],[3,4]],'Example 1');
+is([getMad(1,3,7,11,15)],[[1,3]],'Example 2');
+is([getMad(1,5,3,8)],[[1,3],[3,5]],'Example 3');
+
+done_testing;