DAJ #250

3 files changed, 71 insertions, 0 deletions

diff --git a/challenge-250/dave-jacoby/blog.txt b/challenge-250/dave-jacoby/blog.txt
new file mode 100644
index 0000000000..3726a31806
--- /dev/null
+++ b/challenge-250/dave-jacoby/blog.txt
@@ -0,0 +1 @@
+https://jacoby.github.io/2024/01/01/leaping-from-tree-to-tree-as-they-float-down-the-mighty-rivers-of-british-columbia-weekly-challenge-250.html
diff --git a/challenge-250/dave-jacoby/perl/ch-1.pl b/challenge-250/dave-jacoby/perl/ch-1.pl
new file mode 100644
index 0000000000..15b5614127
--- /dev/null
+++ b/challenge-250/dave-jacoby/perl/ch-1.pl
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+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+use experimental qw{ say postderef signatures state };
+
+use List::Util qw{ min };
+
+my @examples = (
+
+    [ 0, 1, 2 ],
+    [ 4, 3, 2, 1 ],
+    [ 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 ],
+    [ 7, 7, 7, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 ],
+);
+
+for my $example (@examples) {
+    my $input  = join ', ', $example->@*;
+    my $output = smallest_index( $example->@* );
+
+    say <<~"END";
+    Input:  \$ints = ($input)
+    Output: $output
+    END
+}
+
+sub smallest_index (@input) {
+    my @output;
+    for my $i ( 0 .. -1 + scalar @input ) {
+        my $j = $i % 10;
+        push @output, $i if $input[$i] == $j;
+    }
+    return min @output if scalar @output;
+    return -1;
+}
diff --git a/challenge-250/dave-jacoby/perl/ch-2.pl b/challenge-250/dave-jacoby/perl/ch-2.pl
new file mode 100644
index 0000000000..1526412d61
--- /dev/null
+++ b/challenge-250/dave-jacoby/perl/ch-2.pl
@@ -0,0 +1,35 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+use experimental qw{ say postderef signatures state };
+
+use List::Util qw{ max };
+
+my @examples = (
+
+    [ "perl", "2", "000", "python", "r4ku" ],
+    [ "001",  "1", "000", "0001" ],
+);
+
+for my $e (@examples) {
+    my $input = join ', ', map {qq{"$_"}} $e->@*;
+    my $output = alphanumeric_string_value( $e->@* );
+
+    say <<~"END";
+    Input:  \@alphanumstr = ($input)
+    Output: $output
+    END
+}
+
+sub alphanumeric_string_value (@array) {
+    my @output;
+    for my $s (@array) {
+        no warnings;
+        my $n = 0;
+        if   ( $s =~ /\d/ ) { $n = 0 + $s; }
+        else                { $n = length $s; }
+        push @output, $n;
+    }
+    return max @output;
+}