pub/hi/scratch - Short Software projects to try things out

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ame */ .highlight .o { color: #89DDFF } /* Operator */ .highlight .p { color: #89DDFF } /* Punctuation */ .highlight .ch { color: #546E7A; font-style: italic } /* Comment.Hashbang */ .highlight .cm { color: #546E7A; font-style: italic } /* Comment.Multiline */ .highlight .cp { color: #546E7A; font-style: italic } /* Comment.Preproc */ .highlight .cpf { color: #546E7A; font-style: italic } /* Comment.PreprocFile */ .highlight .c1 { color: #546E7A; font-style: italic } /* Comment.Single */ .highlight .cs { color: #546E7A; font-style: italic } /* Comment.Special */ .highlight .gd { color: #FF5370 } /* Generic.Deleted */ .highlight .ge { color: #89DDFF } /* Generic.Emph */ .highlight .ges { color: #FFCB6B } /* Generic.EmphStrong */ .highlight .gr { color: #FF5370 } /* Generic.Error */ .highlight .gh { color: #C3E88D } /* Generic.Heading */ .highlight .gi { color: #C3E88D } /* Generic.Inserted */ .highlight .go { color: #546E7A } /* Generic.Output */ .highlight .gp { color: #FFCB6B } /* Generic.Prompt */ .highlight .gs { color: #FF5370 } /* Generic.Strong */ .highlight .gu { color: #89DDFF } /* Generic.Subheading */ .highlight .gt { color: #FF5370 } /* Generic.Traceback */ .highlight .kc { color: #89DDFF } /* Keyword.Constant */ .highlight .kd { color: #BB80B3 } /* Keyword.Declaration */ .highlight .kn { color: #89DDFF; font-style: italic } /* Keyword.Namespace */ .highlight .kp { color: #89DDFF } /* Keyword.Pseudo */ .highlight .kr { color: #BB80B3 } /* Keyword.Reserved */ .highlight .kt { color: #BB80B3 } /* Keyword.Type */ .highlight .ld { color: #C3E88D } /* Literal.Date */ .highlight .m { color: #F78C6C } /* Literal.Number */ .highlight .s { color: #C3E88D } /* Literal.String */ .highlight .na { color: #BB80B3 } /* Name.Attribute */ .highlight .nb { color: #82AAFF } /* Name.Builtin */ .highlight .nc { color: #FFCB6B } /* Name.Class */ .highlight .no { color: #EEFFFF } /* Name.Constant */ .highlight .nd { color: #82AAFF } /* Name.Decorator */ .highlight .ni { color: #89DDFF } /* Name.Entity */ .highlight .ne { color: #FFCB6B } /* Name.Exception */ .highlight .nf { color: #82AAFF } /* Name.Function */ .highlight .nl { color: #82AAFF } /* Name.Label */ .highlight .nn { color: #FFCB6B } /* Name.Namespace */ .highlight .nx { color: #EEFFFF } /* Name.Other */ .highlight .py { color: #FFCB6B } /* Name.Property */ .highlight .nt { color: #FF5370 } /* Name.Tag */ .highlight .nv { color: #89DDFF } /* Name.Variable */ .highlight .ow { color: #89DDFF; font-style: italic } /* Operator.Word */ .highlight .pm { color: #89DDFF } /* Punctuation.Marker */ .highlight .w { color: #EEFFFF } /* Text.Whitespace */ .highlight .mb { color: #F78C6C } /* Literal.Number.Bin */ .highlight .mf { color: #F78C6C } /* Literal.Number.Float */ .highlight .mh { color: #F78C6C } /* Literal.Number.Hex */ .highlight .mi { color: #F78C6C } /* Literal.Number.Integer */ .highlight .mo { color: #F78C6C } /* Literal.Number.Oct */ .highlight .sa { color: #BB80B3 } /* Literal.String.Affix */ .highlight .sb { color: #C3E88D } /* Literal.String.Backtick */ .highlight .sc { color: #C3E88D } /* Literal.String.Char */ .highlight .dl { color: #EEFFFF } /* Literal.String.Delimiter */ .highlight .sd { color: #546E7A; font-style: italic } /* Literal.String.Doc */ .highlight .s2 { color: #C3E88D } /* Literal.String.Double */ .highlight .se { color: #EEFFFF } /* Literal.String.Escape */ .highlight .sh { color: #C3E88D } /* Literal.String.Heredoc */ .highlight .si { color: #89DDFF } /* Literal.String.Interpol */ .highlight .sx { color: #C3E88D } /* Literal.String.Other */ .highlight .sr { color: #89DDFF } /* Literal.String.Regex */ .highlight .s1 { color: #C3E88D } /* Literal.String.Single */ .highlight .ss { color: #89DDFF } /* Literal.String.Symbol */ .highlight .bp { color: #89DDFF } /* Name.Builtin.Pseudo */ .highlight .fm { color: #82AAFF } /* Name.Function.Magic */ .highlight .vc { color: #89DDFF } /* Name.Variable.Class */ .highlight .vg { color: #89DDFF } /* Name.Variable.Global */ .highlight .vi { color: #89DDFF } /* Name.Variable.Instance */ .highlight .vm { color: #82AAFF } /* Name.Variable.Magic */ .highlight .il { color: #F78C6C } /* Literal.Number.Integer.Long */

defmodule Solver do
  def to_interval(range) do
    [left, right] = String.split(range, "-")
    {left, ""} = Integer.parse(left)
    {right, ""} = Integer.parse(right)
    {left, right}
  end

  def contained({a0, a1}, {b0, b1}) do
    (a0 - b0) * (a1 - b1) <= 0
  end

  def overlap({a0, a1}, {b0, b1}) do
    a0 <= b1 && b0 <= a1
  end
end

{:ok, input} = File.read("input")

parsed =
  input
  |> String.split("\n", trim: true)
  |> Enum.map(&String.split(&1, ","))
  |> Enum.map(fn [left, right] -> {Solver.to_interval(left), Solver.to_interval(right)} end)

parsed
|> Enum.map(fn {left, right} -> Solver.contained(left, right) end)
|> Enum.filter(& &1)
|> length
|> IO.puts()

parsed
|> Enum.map(fn {left, right} -> Solver.overlap(left, right) end)
|> Enum.filter(& &1)
|> length
|> IO.puts()


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