commit ba53422e81970dc012c139db08874e5c0404aa4e · aylac.top/advent_of_code

+30

2015/2/elixir/main.exs

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       defmodule Main do

     

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         {_, input} =

     

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           File.read("../input.txt")

     

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         input =

     

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           input

     

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           |> String.trim()

     

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           |> String.split("\n")

     

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           |> Enum.map(fn v ->

     

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             v |> String.split("x") |> Enum.map(fn v -> String.to_integer(v) end)

     

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           end)

     

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         input

     

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         |> Enum.reduce(0, fn v, acc ->

     

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           [l, w, h] = v

     

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           sides = [l * w, w * h, h * l]

     

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           smallest = sides |> Enum.reduce(fn a, b -> min(a, b) end)

     

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           (sides |> Enum.sum()) * 2 + smallest + acc

     

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         end)

     

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         |> IO.puts()

     

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         input

     

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         |> Enum.reduce(0, fn v, acc ->

     

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           [l, w, h] = v

     

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           half_perimeter = [l + w, w + h, h + l]

     

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           smallest_half_perimeter = half_perimeter |> Enum.reduce(fn a, b -> min(a, b) end)

     

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           l * w * h + smallest_half_perimeter * 2 + acc

     

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         end)

     

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         |> IO.puts()

     

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       end

+40 -42

2015/2/gleam/src/main.gleam

···

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       import gleam/int.{add, min, multiply, to_string}

     

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       import gleam/io.{println}

     

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       import gleam/list.{combinations, fold, map, reduce}

     

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       import gleam/result.{unwrap}

     

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       import gleam/string.{split, trim}

     

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       import simplifile.{read}

     

       7
        
       

     

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       pub fn main() {

     

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         let input =

     

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           read(from: "../input.txt")

     

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           |> unwrap("")

     

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           |> trim()

     

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           |> split("\n")

     

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           |> map(fn(str) {

     

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             split(str, "x")

     

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             |> map(fn(str) { int.base_parse(str, 10) |> unwrap(0) })

     

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           })

     

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         // part 1

     

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         println(

     

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           input

     

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           |> fold(0, fn(prev, cur) {

     

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             let sides =

     

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               cur

     

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               |> combinations(2)

     

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               |> map(fn(v) { fold(v, 1, multiply) })

     

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             prev

     

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             + fold(sides, 0, fn(prev, cur) { prev + 2 * cur })

     

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             + { reduce(sides, min) |> unwrap(0) }

     

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           })

     

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           |> to_string,

     

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         )

     

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         // part 2

     

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         println(

     

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           input

     

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           |> fold(0, fn(prev, cur) {

     

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             let smallest_perimeter =

     

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               reduce(

     

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                 cur

     

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                   |> map(fn(v) { multiply(v, 2) })

     

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                   |> combinations(2)

     

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                   |> map(fn(v) { fold(v, 0, add) }),

     

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                 min,

     

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               )

     

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               |> unwrap(0)

     

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             prev + smallest_perimeter + fold(cur, 1, multiply)

     

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           })

     

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           |> to_string,

     

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         )

     

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       }

···

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       import gleam/int

     

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       import gleam/io

     

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       import gleam/list

     

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       import gleam/result

     

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       import gleam/string

     

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       import simplifile as file

     

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       pub fn main() {

     

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         let input =

     

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           file.read(from: "../input.txt")

     

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           |> result.unwrap("")

     

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           |> string.trim

     

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           |> string.split("\n")

     

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           |> list.map(fn(str) {

     

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             string.split(str, "x")

     

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             |> list.map(fn(str) { int.base_parse(str, 10) |> result.unwrap(0) })

     

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           })

     

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         // part 1

     

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         input

     

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         |> list.fold(0, fn(prev, cur) {

     

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           let sides =

     

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             cur

     

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             |> list.combinations(2)

     

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             |> list.map(fn(v) { list.fold(v, 1, int.multiply) })

     

       0
        
       
     

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           prev

     

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           + list.fold(sides, 0, fn(prev, cur) { prev + 2 * cur })

     

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           + { list.reduce(sides, int.min) |> result.unwrap(0) }

     

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         })

     

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         |> int.to_string

     

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         |> io.println

     

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         // part 2

     

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         input

     

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         |> list.fold(0, fn(prev, cur) {

     

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           let smallest_perimeter =

     

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             list.reduce(

     

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               cur

     

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                 |> list.map(fn(v) { v |> int.multiply(2) })

     

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                 |> list.combinations(2)

     

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                 |> list.map(fn(v) { list.fold(v, 0, int.add) }),

     

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               int.min,

     

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             )

     

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             |> result.unwrap(0)

     

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           prev + smallest_perimeter + list.fold(cur, 1, int.multiply)

     

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         })

     

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         |> int.to_string

     

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         |> io.println

     

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       }