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100
day_2/data
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Game 1: 1 blue; 4 green, 5 blue; 11 red, 3 blue, 11 green; 1 red, 10 green, 4 blue; 17 red, 12 green, 7 blue; 3 blue, 19 green, 15 red
Game 2: 17 red, 10 green; 3 blue, 17 red, 7 green; 10 green, 1 blue, 10 red; 7 green, 15 red, 1 blue; 7 green, 8 blue, 16 red; 18 red, 5 green, 3 blue
Game 3: 10 blue, 3 green, 8 red; 15 green, 14 blue, 1 red; 8 blue, 11 red, 2 green; 5 red, 9 green, 6 blue
Game 4: 1 red, 3 blue; 3 blue, 3 green, 1 red; 11 blue, 2 green; 2 green, 14 blue; 1 green, 7 blue; 11 blue, 5 green
Game 5: 9 green, 5 red, 10 blue; 9 red, 4 blue, 12 green; 9 green, 6 blue, 14 red; 16 green, 8 red, 6 blue; 11 blue, 13 red, 1 green
Game 6: 1 blue, 2 green, 16 red; 1 green, 19 red; 1 blue; 3 blue, 2 red, 1 green; 18 red, 2 blue, 1 green
Game 7: 2 blue, 9 red, 5 green; 11 blue, 6 green, 4 red; 7 red, 3 green, 5 blue; 5 green, 11 blue, 7 red; 17 blue, 4 red, 3 green; 20 blue, 1 green, 2 red
Game 8: 1 green, 6 red, 4 blue; 8 green, 4 blue, 2 red; 2 blue, 5 green
Game 9: 1 green, 5 blue; 4 blue; 2 red, 1 blue
Game 10: 1 green, 12 blue; 6 red, 4 green; 5 green, 14 blue, 9 red; 6 red, 13 blue, 2 green; 6 red, 17 blue, 1 green
Game 11: 19 green, 1 red; 15 red, 7 green; 1 blue, 8 red, 14 green; 1 blue, 11 green, 1 red
Game 12: 4 red, 3 green, 12 blue; 4 green, 13 red; 2 green, 15 blue, 5 red; 5 red, 10 blue, 3 green; 3 green, 17 blue, 17 red; 1 red, 4 green, 15 blue
Game 13: 5 red, 7 blue; 6 red, 1 green, 11 blue; 17 blue, 11 green, 4 red; 6 red, 9 green, 5 blue; 4 green, 14 blue
Game 14: 6 red, 15 blue, 3 green; 4 green, 4 blue, 3 red; 3 blue, 1 green, 5 red
Game 15: 4 green, 3 blue, 6 red; 3 blue, 2 red, 4 green; 15 red, 3 green, 4 blue; 11 red, 2 blue, 1 green
Game 16: 4 green, 1 blue, 12 red; 10 green, 6 blue, 10 red; 1 blue, 2 green, 15 red; 1 green, 3 red, 4 blue
Game 17: 10 green, 11 blue; 13 green, 10 blue, 3 red; 8 red, 3 green, 10 blue
Game 18: 3 red; 4 red, 1 blue; 3 green, 3 red; 10 green, 1 blue; 4 red, 6 green, 1 blue; 3 green
Game 19: 4 red, 6 green; 11 red, 4 blue, 2 green; 4 green, 8 red; 9 red, 7 green, 2 blue; 13 red, 4 blue; 9 red
Game 20: 2 blue, 1 green, 8 red; 3 green, 11 blue, 1 red; 5 blue, 4 red, 6 green; 6 green, 7 red, 5 blue; 7 red, 2 green, 1 blue
Game 21: 7 blue, 3 green; 2 green, 2 red, 7 blue; 6 blue, 3 red, 1 green; 9 blue, 1 green, 3 red
Game 22: 7 red, 5 blue, 9 green; 6 red, 1 blue, 5 green; 18 red, 7 green, 5 blue; 13 red, 11 green, 1 blue; 13 red, 1 blue, 11 green
Game 23: 10 green, 1 blue, 5 red; 2 red, 4 green; 9 green, 2 red; 10 green, 1 blue, 5 red
Game 24: 2 red, 6 green, 16 blue; 3 blue, 12 red, 3 green; 6 blue, 4 red, 12 green; 12 green, 14 blue, 3 red
Game 25: 5 red, 2 blue, 1 green; 4 blue, 14 red, 2 green; 16 blue, 4 red; 5 red; 12 blue, 16 red; 2 red, 6 blue, 1 green
Game 26: 10 blue, 6 green, 5 red; 2 red, 2 green; 8 blue, 5 red; 7 blue, 11 green; 8 green, 9 blue
Game 27: 1 red, 2 green; 6 green, 10 blue; 1 red, 6 green, 11 blue; 4 blue, 1 green, 1 red; 1 red, 7 blue; 5 green, 2 blue, 1 red
Game 28: 6 blue, 5 red, 3 green; 5 blue, 1 green; 1 green, 8 red, 1 blue; 2 blue, 4 green; 4 red, 5 blue
Game 29: 2 red, 4 green, 6 blue; 6 blue, 2 green, 1 red; 10 green, 13 blue, 2 red; 11 green, 11 blue, 2 red; 5 red, 10 green
Game 30: 4 green, 4 blue, 5 red; 6 red, 18 green, 7 blue; 1 red, 11 green, 2 blue; 11 red, 2 blue, 1 green
Game 31: 1 red, 7 green, 2 blue; 5 red, 6 green, 9 blue; 3 green, 1 red, 9 blue; 3 red; 8 blue, 6 green, 1 red; 14 blue, 4 green, 7 red
Game 32: 11 red, 2 blue, 2 green; 18 blue, 1 green; 6 blue, 1 green, 15 red; 4 red, 2 green; 13 red, 6 green, 5 blue; 7 blue, 5 green
Game 33: 12 blue, 2 red, 2 green; 5 blue, 3 green; 2 green, 6 red, 4 blue; 12 blue, 13 red; 10 blue, 12 red, 1 green; 4 blue, 4 red
Game 34: 2 blue, 1 red, 6 green; 2 blue, 1 green; 1 red, 2 green, 2 blue; 17 red, 1 blue, 2 green; 4 green, 2 red
Game 35: 2 blue, 12 red, 2 green; 2 green, 8 red, 11 blue; 17 red, 16 blue; 8 blue, 8 red; 1 green, 6 red, 9 blue
Game 36: 6 red, 14 green, 7 blue; 1 green, 1 red, 6 blue; 9 red, 10 blue, 9 green; 11 blue, 14 green, 8 red; 10 red, 6 green, 3 blue
Game 37: 6 green; 2 red, 5 green; 4 blue, 4 red, 5 green; 1 red, 7 green, 4 blue
Game 38: 1 green, 8 red, 10 blue; 3 green, 5 red, 12 blue; 13 blue, 5 red, 1 green; 3 green, 1 red; 3 red, 15 blue, 6 green; 3 green, 6 red, 4 blue
Game 39: 15 green, 3 blue; 3 green; 3 blue, 3 red, 8 green; 4 blue, 10 green, 4 red; 2 green, 5 blue, 4 red; 3 green, 3 blue, 1 red
Game 40: 2 red, 3 green, 15 blue; 5 blue, 13 green, 2 red; 11 blue, 1 red; 5 blue, 20 green, 5 red
Game 41: 1 red, 2 green, 1 blue; 10 red; 11 green, 1 blue, 5 red; 10 red, 13 green
Game 42: 10 red, 8 green, 2 blue; 5 green, 4 red; 6 red; 5 red, 9 green, 2 blue; 2 blue, 2 red, 3 green; 1 blue, 7 red, 2 green
Game 43: 8 red, 6 blue, 12 green; 11 green, 2 red, 2 blue; 4 blue, 3 red, 8 green; 14 red, 3 blue; 9 green, 1 blue, 5 red
Game 44: 4 red, 5 blue, 4 green; 9 blue, 1 green; 10 green, 2 blue, 4 red; 5 red, 15 green, 12 blue
Game 45: 1 red, 2 green; 5 blue; 3 blue, 1 red; 1 blue; 4 green, 1 red
Game 46: 3 green, 8 red, 5 blue; 1 blue, 10 red, 5 green; 2 green, 5 red, 3 blue; 5 green, 4 red, 13 blue
Game 47: 2 green, 1 blue; 2 red, 2 green, 6 blue; 1 green, 1 red, 1 blue; 2 green, 4 blue, 4 red; 2 green, 6 blue, 3 red
Game 48: 4 blue, 1 green, 2 red; 6 blue, 1 red; 4 blue
Game 49: 16 blue, 18 green, 13 red; 7 red, 13 blue; 14 green, 12 red; 20 green, 14 red, 12 blue
Game 50: 8 blue, 2 red, 1 green; 4 red, 2 green, 5 blue; 6 blue, 2 green; 8 blue, 3 green, 5 red; 1 green, 4 blue
Game 51: 2 blue, 8 red; 2 green, 3 red, 2 blue; 12 green; 3 blue, 10 green, 1 red; 13 green, 3 blue, 5 red
Game 52: 12 blue, 5 red, 16 green; 4 blue, 13 green; 2 red, 5 blue, 5 green; 4 green, 8 blue, 3 red
Game 53: 7 blue, 5 green; 8 green, 8 blue; 4 red, 1 green; 8 blue, 5 red, 11 green
Game 54: 4 blue, 3 green, 1 red; 10 green, 4 red, 7 blue; 1 red, 6 blue, 2 green
Game 55: 2 red, 10 blue; 13 red, 10 blue; 4 red, 5 blue, 4 green; 3 green, 8 blue; 5 blue, 7 red, 2 green
Game 56: 6 green, 7 blue, 9 red; 3 blue, 4 green; 15 red, 3 blue, 3 green; 5 red, 8 green, 7 blue
Game 57: 9 red, 13 blue, 2 green; 3 red, 2 green, 3 blue; 1 blue, 5 red, 3 green; 9 blue, 2 green, 2 red; 3 red, 12 blue, 3 green; 2 green, 7 red
Game 58: 4 blue, 7 red; 2 blue, 5 green, 1 red; 17 blue, 3 red; 5 green, 1 blue, 4 red; 4 green, 14 blue, 3 red
Game 59: 5 blue, 4 red; 7 red; 4 blue, 4 red, 1 green; 1 green, 1 blue, 5 red
Game 60: 4 red, 2 green; 1 green, 2 blue; 2 red, 2 green; 4 red, 2 green; 3 red
Game 61: 6 red, 14 green; 12 green, 3 blue; 3 blue, 16 green, 11 red
Game 62: 12 green, 2 red, 1 blue; 14 red, 2 blue, 4 green; 7 red, 5 green, 1 blue; 4 green, 14 red, 1 blue; 2 blue, 7 green, 3 red; 14 red, 9 green, 2 blue
Game 63: 1 red, 8 blue, 12 green; 3 green, 10 blue, 4 red; 2 red, 1 blue, 2 green; 2 red, 8 green; 4 red, 3 blue, 9 green; 13 green, 4 blue
Game 64: 4 blue, 9 green, 4 red; 10 green, 6 blue, 7 red; 10 green, 8 red, 1 blue; 13 blue, 8 green, 8 red; 4 green, 1 red, 8 blue
Game 65: 16 blue, 5 red, 13 green; 5 red, 9 green, 10 blue; 2 green, 14 red; 6 red, 5 green, 5 blue; 19 blue, 4 green, 14 red; 7 red, 1 blue, 4 green
Game 66: 7 blue, 11 green, 5 red; 7 green, 8 red, 10 blue; 3 red, 1 green
Game 67: 9 green, 2 blue, 13 red; 11 red, 10 blue; 14 red, 1 green, 1 blue; 1 red, 13 green, 6 blue; 7 blue, 3 green, 5 red; 3 green, 2 blue
Game 68: 6 green, 2 blue; 1 blue, 3 red, 5 green; 1 blue, 10 green
Game 69: 4 red, 6 blue, 1 green; 6 blue, 2 red, 4 green; 9 green, 7 blue, 2 red
Game 70: 11 blue, 1 green, 4 red; 7 blue, 1 green; 6 red, 9 blue; 1 green, 3 red, 7 blue; 1 green, 9 blue, 2 red
Game 71: 2 green, 6 red; 1 blue, 2 green, 15 red; 6 red, 1 blue; 2 green, 5 red
Game 72: 5 green, 6 red; 8 red, 1 blue, 12 green; 1 blue, 9 red, 15 green; 11 green, 1 blue, 6 red; 14 green, 5 red
Game 73: 9 green, 13 red, 1 blue; 14 green, 5 blue, 13 red; 13 green, 10 red, 16 blue; 3 blue, 7 red, 1 green; 7 red, 6 green, 11 blue
Game 74: 1 blue, 9 red, 15 green; 3 blue, 7 green; 9 green, 1 blue, 7 red
Game 75: 5 blue, 12 red, 2 green; 2 blue, 2 green; 4 green, 2 red, 7 blue; 4 green, 7 blue, 5 red; 1 green, 7 blue, 3 red
Game 76: 1 blue; 8 red, 13 blue; 4 green, 7 blue, 7 red; 3 red, 12 blue, 2 green; 2 green, 2 blue, 1 red
Game 77: 4 blue; 4 blue; 1 blue, 1 red; 1 red, 5 blue; 10 blue, 1 green
Game 78: 3 blue, 10 green, 6 red; 12 red, 7 blue, 8 green; 2 green, 18 red, 5 blue; 2 red, 15 blue, 14 green; 4 green, 6 blue, 13 red
Game 79: 7 red, 1 green; 1 blue, 6 red, 2 green; 1 blue, 12 red
Game 80: 4 red, 6 blue, 2 green; 5 blue, 2 red; 6 blue, 7 red, 2 green
Game 81: 2 green, 9 red; 2 green, 2 blue, 7 red; 12 red, 7 green; 8 green, 3 red, 3 blue
Game 82: 4 green, 5 blue; 2 red, 16 blue; 2 red, 2 green, 18 blue
Game 83: 14 red, 2 green; 3 blue, 16 red, 2 green; 4 green, 13 red, 1 blue
Game 84: 10 green, 6 blue, 2 red; 5 red, 6 blue; 7 green, 6 red, 9 blue
Game 85: 1 red; 12 red, 1 blue, 2 green; 6 red, 1 green; 12 red, 2 green
Game 86: 14 red, 1 green, 3 blue; 3 blue; 4 green, 8 red, 2 blue; 10 red, 2 green
Game 87: 4 red, 9 green, 8 blue; 3 green, 6 blue, 7 red; 4 blue, 1 red; 2 red, 7 blue, 11 green; 8 green, 2 blue, 5 red; 6 blue, 10 green, 8 red
Game 88: 1 green, 1 red; 2 green, 1 blue; 3 green, 1 red, 1 blue; 4 green; 1 blue, 3 green, 1 red
Game 89: 11 green, 7 blue, 8 red; 7 blue, 3 green, 2 red; 7 green, 6 red, 4 blue; 1 blue, 2 green, 10 red; 3 red, 2 blue, 1 green
Game 90: 10 green, 12 red, 2 blue; 7 red, 7 blue, 8 green; 2 blue, 11 red, 7 green; 6 green, 5 red, 2 blue; 7 red, 10 green
Game 91: 12 red, 8 green; 8 red, 6 green, 3 blue; 12 red, 4 blue, 2 green
Game 92: 10 blue, 3 green; 4 red, 13 blue, 8 green; 7 green, 8 blue, 7 red
Game 93: 7 red, 4 green, 1 blue; 15 green, 4 red; 2 blue, 15 red
Game 94: 10 red, 10 green, 11 blue; 3 red, 1 green, 7 blue; 9 red, 4 green, 9 blue; 7 red, 9 green, 13 blue; 9 blue, 2 green, 10 red
Game 95: 4 blue, 12 green; 7 green, 1 red, 5 blue; 2 blue, 8 green, 8 red
Game 96: 12 green, 2 blue; 11 green, 3 blue; 3 red, 2 green, 5 blue; 12 green, 2 blue, 4 red; 2 blue, 1 green, 1 red; 3 red, 11 green, 3 blue
Game 97: 6 red, 3 blue, 1 green; 1 blue, 2 red, 14 green; 4 blue, 14 green
Game 98: 13 green, 1 red, 5 blue; 2 red, 5 green, 7 blue; 19 green, 5 blue; 4 blue, 13 green; 5 green, 8 blue
Game 99: 11 red, 8 green; 16 red, 10 green; 9 red, 6 green; 3 blue, 2 red, 4 green
Game 100: 4 red, 2 blue, 4 green; 2 green, 1 red, 1 blue; 3 green, 4 blue, 5 red; 18 red, 2 blue; 9 red, 5 green, 4 blue

44
day_2/impl.rb
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MAX = {
red: 12,
green: 13,
blue: 14
}
#prepare the input which is a string containing new lines
def parse(input)
data = []
input.each_line do |line|
#Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green
game_num = line.split(":").first.split(" ").last.to_i
draws = line.chomp.split(":").last.split(";").map {|e| e.split(",") }
h = {}
h[game_num] = draws
data << h
end
data
end
# result should a single string or integer
def calculate(data)
result = 0
data.each do |d|
game_num = d.keys.first
draws = d.values.first
fits = draws_fits?(draws)
result += game_num if fits
puts "#{game_num} is #{fits ? "in": "out"}"
end
result
end
def draws_fits?(draws)
draws.each do |set|
set.each do |draw|
num, color = draw.strip.split(" ")
return false if num.to_i > MAX[color.to_sym]
end
end
true
end

34
day_2/impl_2.rb
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#prepare the input which is a string containing new lines
def parse(input)
data = []
input.each_line do |line|
#Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green
game_num = line.split(":").first.split(" ").last.to_i
draws = line.chomp.split(":").last.split(";").map {|e| e.split(",") }
h = {}
h[game_num] = draws
data << h
end
data
end
# result should a single string or integer
def calculate(data)
result = 0
data.each do |d|
draws = d.values.first
mins = {
red: 0,
blue: 0,
green: 0
}
draws.each do |set|
set.each do |draw|
num, color = draw.strip.split(" ")
mins[color.to_sym] = num.to_i if num.to_i > mins[color.to_sym]
end
end
result += mins[:red] * mins[:blue] * mins[:green]
end
result
end

24
day_2/run.rb
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if ARGV[0] == "2"
require_relative "impl_2"
else
require_relative "impl"
end
def print(result)
if result.is_a? Array
result.map! {|l| "#{l}\n" }
end
puts result
end
def run
puts "running your implementation"
input = File.new("day_2/data").read
data = parse(input)
result = calculate(data)
print(result)
end
run

31
day_2/test.rb
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if ARGV[0] == "2"
require_relative "impl_2"
RESULT = 2286
else
require_relative "impl"
RESULT = 8
end
INPUT = <<~IN
Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green
Game 2: 1 blue, 2 green; 3 green, 4 blue, 1 red; 1 green, 1 blue
Game 3: 8 green, 6 blue, 20 red; 5 blue, 4 red, 13 green; 5 green, 1 red
Game 4: 1 green, 3 red, 6 blue; 3 green, 6 red; 3 green, 15 blue, 14 red
Game 5: 6 red, 1 blue, 3 green; 2 blue, 1 red, 2 green
IN
def test_example
parsed = parse(INPUT)
result = calculate(parsed)
if result == RESULT
puts "Test successful. Now run with real input"
puts "ruby day_2/run.rb #{ARGV[0]}"
else
puts "Test failed"
puts "expected \"#{RESULT}\" got \"#{result}\""
end
end
test_example

140
day_3/data
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...............776..............552........968..................589...26...........484..............958......186....546.........484.........
.........*.........778....................*....124...................................*...............*........%..26.........................
......194..380....@....900..........639....467........478*..............582...........798.............326...........894.........#...........
904...........*2.......#......259.....*..........801......464................597.569.............794+................$..218....502..........
...*.....................-...$.....%..431.........*...810.....840+.668..........*.......144=.............................../...........%627.
...890...497.........829.643....504..........465..502..............*........488...................787.184...601....215........-450..........
.......................*............684.....*.............466...970....646..%...........399...........*.............=....88...........=415..
....................139........415...+......854.....683....*.........+.=.......107.676.....*451......83..416....856.....%....765............
..............163..............*...................*......796.....992.............*...............................#.798.....*......819......
.../....678..*...........429..351..........937......629.................*59.677..........652$.292....................*..431..184..*......688
.79......*...694.......-...........492.247......26.......399/.=....................113.........*...................789....*.......469.......
.......94............667.............*..*...933...*684........861...687...567*927.*.....869..509.......................423..................
.596............................561.271.349....-.........139.........@............278......*............@...942*....36......................
.....475...........*268.........*...................695.................850..#.........233.876......@..768......425......85*734.......*349..
.......*..119.96........287.....177.............940*......................*..445.........@.........577..........................39..30......
.....26......*.......................1=.685..........3...120..81.......533...................................718................*...........
.....................306.........335.................*......+...*..................563..240..................*.......349*708...244...319....
..........30..197...........639......................7.../.....471.......-.......@..*..%........895*680.....635.......................*.....
.....*116...*..*..............*...........445.............643.........75.29.....42.586..........................41.....@.....323.....860....
.511.......105.71.......765...670.....489*.........426.........758.....................139............94.793......*....63.....*.............
...*.....................$..................470......*..........*.....69.......590.730*...........553...........814..........604............
.680..............................443..............598...-.....318.....=........*........845..215..*.............................-..........
............237.......180...........#.691...276...........909...............$..527...881.*.....*...585....224....762.....389..193...........
.....@.....=.........@....789.................*.......857........&.450...716.............149..885............*............*............504..
993...906................*.....685..688........385...*........925..*................................700*...811..=......295.....$311.....-...
...@.................956..809.......*..............................577....965.......%846.....$...@.............839..........................
.........704.393%....*............1..562..............716.................$..................387.645........................571.342./.......
......@..*.........226...........*.........526*914...*......172....-..........32............................211.......990......*....695.....
.....272..481.................288.....................370.....*.....740...........281..............430..13..$...............................
397............#............................65................677....................*.586..758....*......*.................49.#973....409..
.............818.........103...........524.*.........150...........781...236.../891.....*.........456.416.591.691-...849....+...........&...
..................457@......*...........&..813...979*.....453*181....*.....-..........286.....565.....................&.......624...........
......#....................221..464..................................604.....978.........................................%412.*.............
619%..176.........=...280......*......*......................493...............*.......................570+....................961..233@....
..............52..50....*.....26......518.207....%.465.........*.............871...817.............384........792.....@754..................
............3*.......703............%..........554..............20.........................879.......-....646*...............415...814......
........944......946..............766.477.492......835......806...........214.........*......*..............................*......%....633.
....266*......*.....-........................#.783*........*..................900.....852....271..+567.452..249..........850................
...........938.661....770...87.841..................@......739../.....230.....*...916....................*..*...636..49.........18..*20..4..
....110................*......*......#341.-.......*.75..........660..........117.....$.803@.780........172.......*....*.160/.....+..........
....+..................92.693.............952..988..................670.....................@...972...........760..194...............24.....
........479*...880..=........&..475&..677..........%283.....642....*............359...154................755.............690...........&....
...../.........*.....590..=..........&.......&....................765......./...*....................419........214-.......*...324..........
......934...470...........10.......*....-....412............750...........496..651...+701...........*....................698......*217......
............................./228...484.854...........627....%......795.......................*.............450...66........................
............978$...274.......................822.........*.....-760............700.........235.346................*.............+.....885...
...................%...582..........338.@.....*...274..252.....................*...720....................700.18.41...........503.......+...
........4..960....................../....722..897.&..........987..........510..104....+..416.....549.......*...*...................407......
.......*......*211............=725...................$574.......*.........................+......*.......788..350...432..............*......
.244...921.........601....36*..................222..............918...344..733.....109.........610....66..............*...............937...
...*.........464...*.../.....991................*....................+....*....285*......538..........*.......914......526...465.722........
............*.....362.460........49............66.121...=...............373.............=.........530..337....=.................*........606
154...713...611............$725....................*..29...425..74..............920.................@.................389...........715.....
......*........../.....143.......................652.........*..*..711...69.26........406.....................37*175........122.....#.......
.....588........39....*......224.........*................868..800...&../...*....407.......46..387.728......................*...............
............-........39.........*.541.595.516...............................484.*.................*...........206.........636..807..........
.............858.............716....*..........810*290..372........@949.........921...................428........*..+..........*............
........486........301*307.........135.................*................264.178......838.....224..-......*......499..816.......227..........
.......*........................................802...608............24*.......*.........940......98....960............................685..
.......425.76.........+94..556...........699.......*.......................%....857.266.*.....................8................624*....=....
............*.................*735......&....$..345....361%.803..856....732.........*....520....*..............%.......269...=.....286......
...........73.901.../..............384.....520......#.........-./...........447......930......279.......634.............#..207.754......473.
..............@...538.936*484.....*....665...........630...............236...@.....%.....................*...985..406............-..........
..............................328..531...%.616...........................*........64..497..105........844.....*......*......207.............
.....*730......................*.......................478..701........+..567........*...........110.......175.......6.737.......+....192...
..363......119....6....942......892....171..358.981..........*........731.........455....#..........*993.......383......*.........505..@....
..............*....%.%....*............*......*..../..%.....................995........850...264..........82%.....=......735.../............
..207...413/.349.@...628.685.........930......231....921.......................................$..142...........-............713....260.....
.................384.........527..........373.............@946....&...............948...949......*......349...838......................*....
.......................210....*.....................*241.........333.......................*..723........*..........632....916-...164..63...
....789....../..859......@....770............286.881.................867.........218......346.........691..368......*.......................
......$...411.....@.781............857................*912.135.&27...........885....*.942.........%............436..264.449.577..92#........
...............9....................*..............391.....*................*......54..=.........108.......................*................
..............$..106........767..290...751................977............990................499...................466.........545...........
...............................=..........*..................................345............./....=.../...266.847....*605....*....219.......
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82
day_3/impl.rb
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@ -1,82 +0,0 @@
#prepare the input which is a string containing new lines
def parse(input)
data = []
row = 0
symbols = {}
numbers = []
input.each_line do |line|
start_num = false
num = ""
num_cols = []
line.chomp.chars.each_with_index do |c,col|
if c == "."
if start_num
# finish a number
numbers << [num.to_i, row, num_cols]
start_num = false
num = ""
num_cols = []
end
elsif /\d/.match?(c)
# a digit
start_num = true
num += c
num_cols << col
else
# symbol
if start_num
# finish a number
numbers << [num.to_i, row, num_cols]
start_num = false
num = ""
num_cols = []
end
# fill adjacents
symbols[row] = {} if symbols[row].nil?
symbols[row][col-1] = true
symbols[row][col+1] = true
symbols[row-1] = {} if symbols[row-1].nil?
symbols[row-1][col] = true
symbols[row-1][col-1] = true
symbols[row-1][col+1] = true
symbols[row+1] = {}if symbols[row+1].nil?
symbols[row+1][col] = true
symbols[row+1][col-1] = true
symbols[row+1][col+1] = true
end
end
if start_num
# finish a number
numbers << [num.to_i, row, num_cols]
start_num = false
num = ""
num_cols = []
end
row += 1
end
data = [symbols,numbers]
data
end
# result should a single string or integer
def calculate(data)
result = ""
symbols, numbers = data
selected_numbers = []
numbers.each do |number_set|
number, row, cols = number_set
cols.each do |col|
if symbols.dig(row,col)
selected_numbers << number
puts "selected: #{selected_numbers}"
break
end
end
end
result = selected_numbers.reduce(&:+)
result
end

105
day_3/impl_2.rb
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@ -1,105 +0,0 @@
#prepare the input which is a string containing new lines
def parse(input)
data = []
row = 0
symbols = []
numbers = []
input.each_line do |line|
start_num = false
num = ""
num_cols = []
line.chomp.chars.each_with_index do |c,col|
if c == "."
if start_num
# finish a number
numbers << [num.to_i, row, num_cols]
start_num = false
num = ""
num_cols = []
end
elsif /\d/.match?(c)
# a digit
start_num = true
num += c
num_cols << col
elsif c == "*"
# symbol
if start_num
# finish a number
numbers << [num.to_i, row, num_cols]
start_num = false
num = ""
num_cols = []
end
# fill adjacents
symbols << [row,col]
else
# other symbol
if start_num
# finish a number
numbers << [num.to_i, row, num_cols]
start_num = false
num = ""
num_cols = []
end
end
end
if start_num
# finish a number
numbers << [num.to_i, row, num_cols]
start_num = false
num = ""
num_cols = []
end
row += 1
end
data = [symbols,numbers]
data
end
def find_adjacent_numbers(row,col,numbers)
adjacents = []
matches = [
[row-1,col-1],
[row-1,col,],
[row-1,col+1],
[row,col-1],
[row,col+1],
[row+1,col-1],
[row+1,col],
[row+1,col+1]
]
numbers.each do |number|
num, row, cols = number
cols.each do |col|
if matches.include? [row,col]
adjacents << num
break
end
end
end
adjacents
end
# result should a single string or integer
def calculate(data)
result = ""
symbols, numbers = data
selected_numbers = []
symbols.each do |symbol|
row,col = symbol
adj = find_adjacent_numbers(row,col,numbers)
if adj.length == 2
selected_numbers << adj.first * adj.last
end
end
result = selected_numbers.reduce(&:+)
result
end

24
day_3/run.rb
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@ -1,24 +0,0 @@
if ARGV[0] == "2"
require_relative "impl_2"
else
require_relative "impl"
end
def print(result)
if result.is_a? Array
result.map! {|l| "#{l}\n" }
end
puts result
end
def run
puts "running your implementation"
input = File.new("day_3/data").read
data = parse(input)
result = calculate(data)
print(result)
end
run

36
day_3/test.rb
View File

@ -1,36 +0,0 @@
if ARGV[0] == "2"
require_relative "impl_2"
RESULT = 467835
else
require_relative "impl"
RESULT = 4361
end
INPUT = <<~IN
467..114..
...*......
..35..633.
......#...
617*......
.....+.58.
..592.....
......755.
...$.*....
.664.598..
IN
def test_example
parsed = parse(INPUT)
result = calculate(parsed)
if result == RESULT
puts "Test successful. Now run with real input"
puts "ruby day_3/run.rb #{ARGV[0]}"
else
puts "Test failed"
puts "expected \"#{RESULT}\" got \"#{result}\""
end
end
test_example