68 lines
1.7 KiB
Julia
68 lines
1.7 KiB
Julia
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include("utils.jl")
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function parse_input(filename)
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map(non_empty_lines(filename)) do line
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collect(map(x->parse(Int, x.match), eachmatch(r"[0-9]+", line)))
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end
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end
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function solution5_1()
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max_x = 0
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max_y = 0
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lines = filter(parse_input("5.data")) do line
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max_x = max(max_x, line[1], line[2])
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max_y = max(max_y, line[2], line[4])
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line[1] == line[3] || line[2] == line[4]
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end
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board = fill(0, max_x + 1 , max_y + 1)
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for line in lines
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if line[1] == line[3]
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if line[2] <= line[4]
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for i in line[2]:line[4]
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board[line[1] + 1, i + 1] += 1
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end
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else
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for i in line[4]:line[2]
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board[line[1] + 1, i + 1] += 1
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end
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end
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else
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if line[1] <= line[3]
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for i in line[1]:line[3]
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board[i + 1, line[2] + 1] += 1
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end
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else
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for i in line[3]:line[1]
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board[i + 1, line[2] + 1] += 1
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end
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end
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end
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end
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length(filter(>(1), board))
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end
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function solution5_2()
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max_x = 0
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max_y = 0
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lines = filter(parse_input("5.data")) do line
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max_x = max(max_x, line[1], line[2])
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max_y = max(max_y, line[2], line[4])
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true
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end
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board = fill(0, max_x + 1 , max_y + 1)
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for line in lines
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x = line[1]
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y = line[2]
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board[x + 1, y + 1] += 1
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while x != line[3] || y != line[4]
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x += sign(line[3]-line[1])
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y += sign(line[4]-line[2])
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board[x + 1, y + 1] += 1
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end
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end
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length(filter(>(1), board))
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# transpose(board)
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end
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solution5_2()
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