2 files changed, 46 insertions, 0 deletions
diff --git a/challenge-211/carlos-oliveira/perl/ch-1.pl b/challenge-211/carlos-oliveira/perl/ch-1.pl
new file mode 100644
index 0000000000..bfd6351111
--- /dev/null
+++ b/challenge-211/carlos-oliveira/perl/ch-1.pl
@@ -0,0 +1,27 @@
+use strict;
+use warnings;
+use v5.36;
+
+use Test::More;
+use List::Util qw(uniq);
+
+sub is_toeplitz_matrix (@matrix) {
+  my $cols = $matrix[0]->@*;
+  for my $i (0..$#matrix) {
+    my @diagonal = uniq map { $i < $cols ? $_->[$i++] : () } @matrix;
+    return 0 unless @diagonal == 1;
+  }
+  return 1;
+}
+
+is is_toeplitz_matrix(
+  [4, 3, 2, 1],
+  [5, 4, 3, 2],
+  [6, 5, 4, 3]
+), 1;
+is is_toeplitz_matrix(
+  [1, 2, 3],
+  [3, 2, 1]
+), 0;
+
+done_testing;
diff --git a/challenge-211/carlos-oliveira/perl/ch-2.pl b/challenge-211/carlos-oliveira/perl/ch-2.pl
new file mode 100644
index 0000000000..421b8e94d7
--- /dev/null
+++ b/challenge-211/carlos-oliveira/perl/ch-2.pl
@@ -0,0 +1,19 @@
+use strict;
+use warnings;
+use v5.36;
+
+use Test::More;
+use Algorithm::Combinatorics qw(partitions);
+use List::Util qw(any sum uniqnum);
+use builtin qw(true false);
+
+sub can_be_split_with_same_average (@array) {
+  return any { $_->@* == 1 }
+    map { [ uniqnum map sum($_->@*) / $_->@*, $_->@* ] }
+    partitions \@array, 2;
+}
+
+is can_be_split_with_same_average(1, 2, 3, 4, 5, 6, 7, 8), true;
+is can_be_split_with_same_average(1, 3), false;
+
+done_testing;