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author | H.J <thechairman@thechairman.info> | 2024-10-09 11:36:55 -0400 |
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committer | H.J <thechairman@thechairman.info> | 2024-10-09 11:36:55 -0400 |
commit | 8777ff071f7bb37631baa7b6717ad29961e50911 (patch) | |
tree | 6d59c4ed58e454b960339c3d1151f0a879e8d7cb /aoc2019-gleam/src/aoc_2019/day_2.gleam | |
parent | 6156a9ef7be4012063a042aafb4e9b0d7eadde8e (diff) | |
download | gleam_aoc-8777ff071f7bb37631baa7b6717ad29961e50911.tar.gz gleam_aoc-8777ff071f7bb37631baa7b6717ad29961e50911.zip |
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Diffstat (limited to 'aoc2019-gleam/src/aoc_2019/day_2.gleam')
-rw-r--r-- | aoc2019-gleam/src/aoc_2019/day_2.gleam | 81 |
1 files changed, 0 insertions, 81 deletions
diff --git a/aoc2019-gleam/src/aoc_2019/day_2.gleam b/aoc2019-gleam/src/aoc_2019/day_2.gleam deleted file mode 100644 index 8faa0ea..0000000 --- a/aoc2019-gleam/src/aoc_2019/day_2.gleam +++ /dev/null @@ -1,81 +0,0 @@ -import gary.{type ErlangArray} -import gary/array.{type ArrayError} -import gleam/bool -import gleam/int -import gleam/list -import gleam/result -import gleam/string - -pub fn parse(input: String) -> ErlangArray(Int) { - input - |> string.split(",") - |> list.map(int.parse) - |> result.values() - |> array.from_list(default: -1) - |> array.make_fixed() -} - -pub fn pt_1(input: ErlangArray(Int)) -> Int { - let assert Ok(result) = - input - |> edit_starting_intcodes(12, 2) - |> run_intcode(0) - - result -} - -pub fn pt_2(input: ErlangArray(Int)) -> Int { - let assert [result] = { - use noun <- list.flat_map(list.range(0, 99)) - use verb <- list.filter_map(list.range(0, 99)) - let result = input |> edit_starting_intcodes(noun, verb) |> run_intcode(0) - case result == Ok(19_690_720) { - True -> Ok(100 * noun + verb) - False -> Error(Nil) - } - } - - result -} - -fn run_intcode( - intcode: ErlangArray(Int), - pointer: Int, -) -> Result(Int, ArrayError) { - let assert Ok(op_code) = array.get(intcode, pointer) - let op = get_op(op_code) - - use <- bool.guard(result.is_error(op), array.get(intcode, 0)) - let assert Ok(position_1) = array.get(intcode, pointer + 1) - let assert Ok(position_2) = array.get(intcode, pointer + 2) - let assert Ok(position_3) = array.get(intcode, pointer + 3) - - let assert Ok(value_1) = array.get(intcode, position_1) - let assert Ok(value_2) = array.get(intcode, position_2) - - let assert Ok(f) = op - let new_value = f(value_1, value_2) - let assert Ok(updated_intcode) = array.set(intcode, position_3, new_value) - run_intcode(updated_intcode, pointer + 4) -} - -fn edit_starting_intcodes( - intcodes: ErlangArray(Int), - new_code_1: Int, - new_code_2: Int, -) -> ErlangArray(Int) { - let assert Ok(updated) = - intcodes - |> array.set(at: 1, put: new_code_1) - |> result.try(array.set(into: _, at: 2, put: new_code_2)) - updated -} - -fn get_op(code: Int) -> Result(fn(Int, Int) -> Int, Nil) { - case code { - 1 -> Ok(int.add) - 2 -> Ok(int.multiply) - 99 -> Error(Nil) - _ -> panic as "bad opcode" - } -} |