Challenge 203 by Jaldhar H. Vyas.

challenge-203/jaldhar-h-vyas/perl/ch-1.pl

@@ -0,0 +1,36 @@
+#!/usr/bin/perl
+use 5.030;
+use warnings;
+
+sub combinations {
+    my @list = @{$_[0]};
+    my $length = $_[1];
+
+    if ($length <= 1) {
+        return map [$_], @list;
+    }
+
+    my @combos;
+
+    for (my $i = 0; $i + $length <= scalar @list; $i++) {
+        my $val  = $list[$i];
+        my @rest = @list[$i + 1 .. $#list];
+        for my $c (combinations(\@rest, $length - 1)) {
+            push @combos, [$val, @{$c}] ;
+        }
+    }
+
+    return @combos;
+}
+
+my @args = @ARGV;
+my @quadruplets;
+
+for my $combo (combinations(\@args, 4)) {
+    my @sorted = sort {$a <=> $b} @{$combo};
+    if ($sorted[0] + $sorted[1] + $sorted[2] == $sorted[3]) {
+        push @quadruplets, \@sorted;
+    }
+}
+
+say scalar @quadruplets;

challenge-203/jaldhar-h-vyas/perl/ch-2.pl

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+#!/usr/bin/perl
+use 5.038;
+use warnings;
+use File::Find;
+use File::Spec;
+
+my ($source, $target) = @ARGV;
+if (@ARGV != 2) {
+    die "Usage: $0 source_dir target_dir\n";
+}
+
+unless (-d $target) {
+    mkdir $target;
+}
+
+my @dirs;
+
+find(
+    {
+        wanted => sub {
+            if (-d) {
+                push @dirs, $File::Find::name;
+            }
+        },
+        no_chdir => 1,
+    },
+    $source
+);
+
+for my $dir (@dirs) {
+    if ($dir eq $source) {
+        next;
+    }
+
+    my $relPath = File::Spec->abs2rel($dir, $source);
+    my $newDir = File::Spec->catdir($target, $relPath);
+
+    mkdir $newDir;
+}

challenge-203/jaldhar-h-vyas/raku/ch-1.raku

@@ -0,0 +1,16 @@
+#!/usr/bin/raku
+
+sub MAIN(
+    *@args
+) {
+    my @quadruplets;
+
+    for @args.combinations(4) -> $combo {
+        my @sorted = @$combo.sort({$^a <=> $^b});
+        if @sorted[0] + @sorted[1] + @sorted[2] == @sorted[3] {
+            @quadruplets.push(@sorted);
+        }
+    }
+
+    @quadruplets.elems.say;
+}

challenge-203/jaldhar-h-vyas/raku/ch-2.raku

@@ -0,0 +1,25 @@
+#!/usr/bin/raku
+use File::Find;
+
+sub MAIN(
+    Str $source,  #= source directory path
+    Str $target   #= target directory path
+) {
+    my $sio = $source.IO;
+    my $tio = $target.IO;
+
+    unless $tio.d {
+        mkdir $target;
+    }
+
+    my @dirs = find(dir => $sio, type => 'dir');
+
+    for @dirs -> $dir {
+
+        my $relPath = $dir.relative($sio);
+        my $newDir = $tio.add($relPath);
+
+        mkdir $newDir;
+    }
+}
+