aoc2022

commit 170a104bdcd9131bc9ca1778b308257ea1be3f7e
parent 5893765b96d79dcd5ada1c5c3cf58ce30e9351be
Author: Samir Parikh <noreply@samirparikh.com>
Date:   Sun,  1 Jan 2023 16:54:26 +0000

start to work on part 1 of day11

Diffstat:
A
day11/day11.pl
 | 
102
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 102 insertions(+), 0 deletions(-)
diff --git a/day11/day11.pl b/day11/day11.pl
@@ -0,0 +1,102 @@
+#!/usr/local/bin/perl
+# day 2022-11
+
+use strict;
+use warnings;
+use v5.32;
+#use Data::Dumper;
+#$Data::Dumper::Indent = 1;
+use Log::Log4perl ();
+use Log::Log4perl::Level ();
+
+Log::Log4perl->easy_init(Log::Log4perl::Level::to_priority( 'DEBUG' ));
+my $logger = Log::Log4perl->get_logger();
+
+@ARGV = "input" unless @ARGV;
+$/ = ''; # set to paragraph mode.  Each monkey is treated as one record
+my @input = <>;
+
+my $ITEMS       = "items";
+my $OPERATION   = "Operation";
+my $TEST        = "Test";
+my $TRUE        = "true";
+my $FALSE       = "false";
+my $ROUNDS      = 1;
+
+sub init_monkeys {
+    my @input = @_;
+    my @monkeys;
+    foreach my $monkey ( @input ) {
+        my %monkey;
+        foreach my $attribute ( split /\n/, $monkey ) {
+            next if ( $attribute =~ m/Monkey/ );
+            my ( $key, $value ) = split /:/ => $attribute;
+            if ( $key =~ m/$ITEMS/ ) {
+                $value =~ s/\s//g;
+                $monkey{ $ITEMS } = [ split /,/ => $value ];
+            } elsif ( $key =~ m/$OPERATION/ ) {
+                my %operation;
+                my ( $operation, $operand ) = $value =~ m/(\+|\*) (.+)/;
+                $monkey{ $OPERATION } = { "operation" => $operation,
+                                          "operand"   => $operand,
+                                        };
+            } elsif ( $key =~ m/$TEST/ ) {
+                ( $monkey{ $TEST } )  = $value =~ m/(\d+)/;
+            } elsif ( $key =~ m/$TRUE/ ) {
+                ( $monkey{ $TRUE } )  = $value =~ m/(\d+)/;
+            } elsif ( $key =~ m/$FALSE/ ) {
+                ( $monkey{ $FALSE } ) = $value =~ m/(\d+)/;
+            } else {
+                die "Could not parse attribute $attribute";
+            }
+        }
+        push @monkeys => \%monkey;
+    }
+    return @monkeys;
+}
+
+my @monkeys1 = init_monkeys( @input );
+#foreach my $monkey ( @monkeys1 ) {
+#    say "@{ $monkey->{$ITEMS} }";
+#}
+
+foreach my $round ( 1 .. $ROUNDS ) {
+    my $num = 0; # extra
+    foreach my $monkey ( @monkeys1 ) {
+        $logger->debug( "Monkey $num:" );
+        while ( @{ $monkey->{ $ITEMS } } ) {
+            my $item = shift @{ $monkey->{ $ITEMS } };
+            $logger->debug( "  Monkey inspects an item with a worry level of $item." );
+#            say "operation is ", $monkey->{ $OPERATION }{ operation };
+#            say "operand is   ", $monkey->{ $OPERATION }{ operand   };
+            my $expression = join " ",
+                             $item,
+                             $monkey->{ $OPERATION }{ operation },
+                             $monkey->{ $OPERATION }{ operand } eq 'old' ? $item :
+                             $monkey->{ $OPERATION }{ operand };
+            #say $expression;
+            #my $result = eval $expression;
+            #say "$expression = $result";
+            $item = eval $expression;
+            $logger->debug( "    Worry level is now $item." );
+            $item = int( $item / 3 );
+            $logger->debug("    Monkey gets bored with item. Worry level is divided by 3 to $item.");
+        }
+        $num++; # extra
+    }
+}
+#say Dumper \@monkeys1;
+#
+#
+#my $operation = '+';
+#my $arg1 = 2;
+#my $arg2 = 5;
+#
+#my $expression = join " ", $arg1, $operation, $arg2;
+##my $expression = '$arg1 $operation $arg2';
+#say $expression;
+#
+#my $result = eval $expression;
+#say $result;
+#
+#say int (10/3);