3 files changed, 80 insertions, 0 deletions
diff --git a/challenge-271/dave-jacoby/blog.txt b/challenge-271/dave-jacoby/blog.txt
new file mode 100644
index 0000000000..4a408c867b
--- /dev/null
+++ b/challenge-271/dave-jacoby/blog.txt
@@ -0,0 +1 @@
+https://jacoby-lpwk.onrender.com/2024/05/28/rows-without-a-paddle-weekly-challenge-271.html
diff --git a/challenge-271/dave-jacoby/perl/ch-1.pl b/challenge-271/dave-jacoby/perl/ch-1.pl
new file mode 100644
index 0000000000..7427d07108
--- /dev/null
+++ b/challenge-271/dave-jacoby/perl/ch-1.pl
@@ -0,0 +1,40 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+use experimental qw{ bitwise fc postderef say signatures state };
+
+use List::Util qw{max};
+
+my @examples = (
+
+    [ [ 0, 1 ], [ 1, 0 ], ],
+    [ [ 0, 0, 0 ], [ 1, 0, 1 ], ],
+    [ [ 0, 0 ], [ 1, 1 ], [ 0, 0 ], ],
+);
+for my $example (@examples) {
+    use JSON;
+    my $j      = JSON->new->pretty->canonical;
+    my $output = maximum_ones($example);
+    my $input  = display_matrix($example);
+    say <<"END";
+    Input:  \$matrix = 
+        [ $input ]
+    Output: $output
+END
+}
+
+sub maximum_ones ($matrix) {
+    my @rows = (0);
+    for my $r ( 1 .. scalar @$matrix ) {
+        $rows[$r] = scalar grep { $_ == 1 } $matrix->[ $r - 1 ]->@*;
+    }
+    my $max = max @rows;
+    my ($i) = grep { $rows[$_] == $max } 0 .. -1 + scalar @rows;
+    return $i;
+}
+
+sub display_matrix ($matrix) {
+    return join ",\n          ",
+        map { join ' ', '[', ( join ', ', $_->@* ), ']' } $matrix->@*;
+}
diff --git a/challenge-271/dave-jacoby/perl/ch-2.pl b/challenge-271/dave-jacoby/perl/ch-2.pl
new file mode 100644
index 0000000000..2b9b658589
--- /dev/null
+++ b/challenge-271/dave-jacoby/perl/ch-2.pl
@@ -0,0 +1,39 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+use experimental qw{ fc say postderef signatures state };
+
+use List::Util qw{ sum0 };
+
+my @examples = (
+
+    [ 0,    1,   2,   3,   4, 5, 6, 7, 8 ],
+    [ 1024, 512, 256, 128, 64 ],
+);
+
+for my $example (@examples) {
+    my @output = sort sb1 sort numeric $example->@*;
+    my $input  = join ', ', $example->@*;
+    my $output = join ', ', @output;
+
+    say <<"END";
+        Input:  \@ints = ($input)
+        Output: $output
+END
+}
+
+sub numeric {
+    return $a <=> $b ;
+}
+
+sub sb1 {
+    my $A  = sprintf '%b', $a;
+    my $B  = sprintf '%b', $b;
+    my $da = sum0 split //, $A;
+    my $db = sum0 split //, $B;
+    return -1 if $da < $db;
+    return 1  if $da > $db;
+    return 0;
+}
+