aoc2021

commit 9e04b14633f111fba29d08216bbe54fef87f1b77
parent d4c8dc1a4a43d0c8e5a8cefcf7216f904dc1ba52
Author: Samir Parikh <noreply@samirparikh.com>
Date:   Wed,  1 Dec 2021 21:27:34 +0000

add Day 01 Part 1 solution

Diffstat:
A
day01-1.pl
 | 
16
++++++++++++++++

1 file changed, 16 insertions(+), 0 deletions(-)
diff --git a/day01-1.pl b/day01-1.pl
@@ -0,0 +1,16 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+use v5.22;
+
+if (@ARGV !=1) {
+    die "Usage: $0 [input-filename]";
+}
+
+my $input_filename = $ARGV[0];
+open my $filehandle, '<', $input_filename or
+    die "Could not open input file $input_filename: $!";
+
+chomp( my @input = ( <$filehandle> ) );
+say scalar( grep { $input[$_] > $input[$_ - 1] } (1 .. $#input) );