Merge pull request #9565 from PerlBoy1967/branch-for-challenge-256

w256 - Task 1 & 2

2 files changed, 79 insertions, 0 deletions

diff --git a/challenge-256/perlboy1967/perl/ch1.pl b/challenge-256/perlboy1967/perl/ch1.pl
new file mode 100755
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+++ b/challenge-256/perlboy1967/perl/ch1.pl
@@ -0,0 +1,41 @@
+#!/bin/perl
+
+=pod
+
+The Weekly Challenge - 256
+- https://theweeklychallenge.org/blog/perl-weekly-challenge-256
+
+Author: Niels 'PerlBoy' van Dijke
+
+Task 1: Maximum Pairs
+Submitted by: Mohammad Sajid Anwar
+
+You are given an array of distinct words, @words.
+
+Write a script to find the maximum pairs in the given array. The words $words[i]
+and $words[j] can be a pair one is reverse of the other.
+
+=cut
+
+use v5.32;
+use feature qw(signatures);
+use common::sense;
+
+use Test2::V0;
+
+sub maximumPairs(@words) {
+  my ($n,%w) = (0);
+
+  for (@words) {
+    $n++ if exists $w{reverse $_};
+    $w{$_}++;
+  }
+
+  return $n;
+}
+
+is(maximumPairs(qw(ab de ed bc)),1);
+is(maximumPairs(qw(aa ba cd ed)),0);
+is(maximumPairs(qw(uv qp st vu mn pq)),2);
+
+done_testing;
diff --git a/challenge-256/perlboy1967/perl/ch2.pl b/challenge-256/perlboy1967/perl/ch2.pl
new file mode 100755
index 0000000000..0d47872c79
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+++ b/challenge-256/perlboy1967/perl/ch2.pl
@@ -0,0 +1,38 @@
+#!/bin/perl
+
+=pod
+
+The Weekly Challenge - 256
+- https://theweeklychallenge.org/blog/perl-weekly-challenge-256
+
+Author: Niels 'PerlBoy' van Dijke
+
+Task 2: Merge Strings
+Submitted by: Mohammad Sajid Anwar
+
+You are given two strings, $str1 and $str2.
+
+Write a script to merge the given strings by adding in alternative order
+starting with the first string. If a string is longer than the other then
+append the remaining at the end.
+
+=cut
+
+use v5.32;
+use feature qw(signatures);
+use common::sense;
+
+use Test2::V0;
+
+use List::MoreUtils qw(pairwise);
+
+sub mergeStrings ($s1,$s2) {
+  my @s1 = split //, $s1; my @s2 = split //, $s2;
+  join '', pairwise { ($a//'').($b//'') } @s1, @s2;
+}
+
+is(mergeStrings('abcd','1234'),'a1b2c3d4');
+is(mergeStrings('abc','12345'),'a1b2c345');
+is(mergeStrings('abcde','123'),'a1b2c3de');
+
+done_testing;