2 files changed, 65 insertions, 0 deletions
diff --git a/challenge-340/zapwai/perl/ch-1.pl b/challenge-340/zapwai/perl/ch-1.pl
new file mode 100644
index 0000000000..8798a6dc8c
--- /dev/null
+++ b/challenge-340/zapwai/perl/ch-1.pl
@@ -0,0 +1,39 @@
+use v5.38;
+
+sub strip($s) {
+    my @l = split '', $s;
+    my $bad_index = "-1";
+    for my $i (0 .. $#l - 1) {
+	if ($l[$i] eq $l[$i+1]) {
+	    $bad_index = $i;
+	    last;
+	}
+    }
+    if ($bad_index == -1) {
+	return $s;
+    } else {
+	splice @l, $bad_index, 2;
+	return join '', @l;
+    }
+}
+
+sub proc($s) {
+    say "Input: $s";
+    while (1) {
+	my $pre = $s;
+	$s = strip($s);
+	last if ($pre eq $s);
+    }
+    say "Output: $s";
+}
+
+my $str = "abbaca";
+proc($str);
+$str = "azxxzy";
+proc($str);
+$str = "aaaaaaaa";
+proc($str);
+$str = "aabccba";
+proc($str);
+$str = "abcddcba";
+proc($str);
diff --git a/challenge-340/zapwai/perl/ch-2.pl b/challenge-340/zapwai/perl/ch-2.pl
new file mode 100644
index 0000000000..2982ccf0ea
--- /dev/null
+++ b/challenge-340/zapwai/perl/ch-2.pl
@@ -0,0 +1,26 @@
+use v5.38;
+
+sub proc($s) {
+    say "Input: $s";
+    my @w = split " ", $s;
+    my @n;
+    for my $w (@w) {
+	push @n, $w if ($w =~ /^\d+$/);
+    }
+    my $o = "true";
+    for my $i (0 .. $#n - 1) {
+	$o = "false" if ($n[$i+1] <= $n[$i]);
+    }
+    say "Output: $o";
+}
+
+my $str = "The cat has 3 kittens 7 toys 10 beds";
+proc($str);
+$str = "Alice bought 5 apples 2 oranges 9 bananas";
+proc($str);
+$str = "I ran 1 mile 2 days 3 weeks 4 months";
+proc($str);
+$str = "Bob has 10 cars 10 bikes";
+proc($str);
+$str = "Zero is 0 one is 1 two is 2";
+proc($str);