advent/day11.rb at main · flanderb/advent · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
class Monkey
    attr_reader :name, :items, :num_inspections

    def initialize(name, items, operations, div_test, true_monkey, false_monkey)
        @name = name
        @items = items
        @operations = operations
        @line_test = div_test
        @true_monkey = true_monkey
        @false_monkey = false_monkey
        @num_inspections = 0
    end

    def inspect_items
        temp_item = []
        thrown_items = []
        new_item = 0
        @items.each do |old_item|
            new_item = eval(@operations.gsub("old", old_item.to_s ))/3
            # p "old_item #{old_item}   new item #{new_item}  "
            if new_item % @line_test == 0
                #pass to true monkey
                temp_item.push(@true_monkey)
            else
                #pass to false monkey
                temp_item.push(@false_monkey)
            end
            temp_item.push(new_item)
            thrown_items.push(temp_item.clone)
            # p thrown_items
            temp_item.clear
            # item.clear
            @num_inspections += 1
        end
            # p thrown_items
            @items.clear
            return thrown_items
    end

    def add_item(item)
        @items.push(item)
    end

end


class KeepAway
    def initialize(input, rounds)
        @monkeys = []
        input_file(input)
        play(@monkeys, rounds)
    end

    attr_reader :monkeys

    def input_file(input)
        name = 0
        items = []
        operations = ""
        line_test = []
        true_monkey = 0
        false_monkey = 0

        File.foreach(input) do |line|
            if line[0] == 'M'
                name = line.tr_s('Monkey :', '').to_i
            elsif line[2] == 'S'
                items = line.tr_s('Starting items: ', '').split(',')
                items = items.map{|item| item.chomp.to_i}
            elsif line[2] == 'O'
                operations = line.partition("= ").last.chomp
            elsif line[2] == 'T'
                line_test = line.split[-1].to_i
            elsif line[7] == 't'
                true_monkey = line.split[-1].to_i
            elsif line[7] == 'f'
                false_monkey = line.split[-1].to_i
            else
                @monkeys.push(Monkey.new(name, items, operations, line_test, true_monkey, false_monkey))
            end

        end
        @monkeys.push(Monkey.new(name, items, operations, line_test, true_monkey, false_monkey))
    end

    def play(monkeys, rounds)
        rounds.times do
            monkeys.each do |monkey|
                target_monkeys = monkey.inspect_items
                target_monkeys.each do |target|
                    new_monkey = target[0]
                    new_item = target[1]
                    p "monkey #{monkey.name} throws item #{new_item} to #{new_monkey}"
                    monkeys[new_monkey].add_item(new_item)
                end
            end
        end
    end

    def monkey_business
        inspections = []
        monkeys.each do |monkey|
            inspections.push(monkey.num_inspections)
        end
        return inspections.sort.reverse[0] * inspections.sort.reverse[1]
    end
end


today = KeepAway.new("day11.txt", 20)
m =  today.monkeys

m.each do |monkey|
    p "------------"
    p monkey.name
    p monkey.items
    p monkey.num_inspections
    p "----------"
    p today.monkey_business
end