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76 lines
1.4 KiB
76 lines
1.4 KiB
6 years ago
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require "set"
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require "minitest"
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require "minitest/pride"
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class Slice
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def self.parse(s)
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clay = Set.new
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s.scan(/^(x|y)=(\d+), (?:x|y)=(\d+)..(\d+)$/m).each do |xy, i, min, max|
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i, min, max = [i, min, max].map(&:to_i)
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clay.merge((min..max).map {|j| xy == ?x ? [j, i] : [i, j] })
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end
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new(clay)
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end
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def initialize(clay)
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@clay = clay
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end
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def to_s
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min_x, max_x = @clay.map(&:last).minmax
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min_y, max_y = @clay.map(&:first).minmax
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min_y = [0, min_y].min
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(min_y..max_y).map {|y|
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(min_x-1..max_x+1).map {|x|
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if [x, y] == [500, 0]
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?+
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else
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@clay.include?([y, x]) ? ?# : ?.
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end
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}.join
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}.join(?\n)
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end
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end
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class TestSlice < Minitest::Test
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def test_parse_to_s
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slice = Slice.parse(<<~SLICE)
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x=495, y=2..7
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y=7, x=495..501
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x=501, y=3..7
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x=498, y=2..4
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x=506, y=1..2
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x=498, y=10..13
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x=504, y=10..13
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y=13, x=498..504
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SLICE
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assert_equal <<~SLICE.chomp, slice.to_s
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......+.......
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............#.
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.#..#.......#.
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.#..#..#......
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.#..#..#......
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.#.....#......
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.#.....#......
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.#######......
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..............
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..............
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....#.....#...
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....#.....#...
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....#.....#...
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....#######...
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SLICE
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end
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end
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def solve(input)
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end
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if __FILE__ == $0
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require "minitest/autorun" and exit if ENV["TEST"]
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puts solve(ARGF.read)
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end
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