2 files changed, 58 insertions, 0 deletions
diff --git a/challenge-215/zapwai/perl/ch-1.pl b/challenge-215/zapwai/perl/ch-1.pl
new file mode 100644
index 0000000000..4dee7fa3fc
--- /dev/null
+++ b/challenge-215/zapwai/perl/ch-1.pl
@@ -0,0 +1,19 @@
+use v5.30.0;
+my @words = ('abc', 'xyz', 'cab');
+my $count = 0;
+my $output;
+say "Input: \@words = @words";
+print "Output: ";
+is_alph($_) foreach (@words);
+say $count;
+say $output . "can be removed." if ($output);
+sub is_alph {
+    my $word = shift;
+    my @let = split("",$word);
+    foreach (0 .. $#let - 1) {
+	if ($let[$_] gt $let[$_ + 1]) {
+	    $count++ ;
+	    $output .= $word . " ";
+	}
+    }
+}
diff --git a/challenge-215/zapwai/perl/ch-2.pl b/challenge-215/zapwai/perl/ch-2.pl
new file mode 100644
index 0000000000..4b1ec36e45
--- /dev/null
+++ b/challenge-215/zapwai/perl/ch-2.pl
@@ -0,0 +1,39 @@
+use v5.30.0;
+my @numbers = (1,0,0,0,1);
+my $count = 1;
+say "Input: \@numbers = (" . join(",", @numbers) . "), \$count = $count";
+print "Output: ";
+sub spaces {
+    my $n = shift;
+    return 0 if ($n < 0);
+    if ($n % 2 == 0) {
+	($n - 2) / 2
+    } else {
+	($n - 1) / 2
+    }
+}
+
+my $land;
+my $water;
+my $length = 0;
+my $total;
+foreach (0 .. $#numbers) {
+    if ($numbers[$_] != '0') {
+	$land = 1;
+	if ($water) {
+	    $total += spaces($length);
+	    $water = 0;
+	}
+
+    } else {
+	$length++;
+	if ($land) {
+	    $land = 0;
+	    $water = 1;
+	}
+    }
+}
+
+my $ans = ($count <= $total) || 0;
+say $ans;
+say "There is room for $total placements.";