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|
import adglent.{First, Second}
import gleam/io
import gleam/list
import gleam/string
import gleam/regex.{type Match, Match}
import gleam/int
pub fn part1(input: String) {
let assert Ok(re) = regex.from_string("[1-9]")
input
|> string.split("\n")
|> list.fold(
0,
fn(acc, s) {
let matches = regex.scan(s, with: re)
let assert Ok(Match(content: first, ..)) = list.first(matches)
let assert Ok(Match(content: last, ..)) = list.last(matches)
let assert Ok(i) = int.parse(first <> last)
acc + i
},
)
|> string.inspect
}
const substitutions = [
#("one", "o1e"),
#("two", "t2o"),
#("three", "t3e"),
#("four", "4"),
#("five", "5e"),
#("six", "6"),
#("seven", "7n"),
#("eight", "e8t"),
#("nine", "n9e"),
]
pub fn part2(input: String) {
list.fold(
over: substitutions,
from: input,
with: fn(acc, sub) {
let #(from, to) = sub
string.replace(in: acc, each: from, with: to)
},
)
|> part1
}
pub fn main() {
let assert Ok(part) = adglent.get_part()
let assert Ok(input) = adglent.get_input("1")
case part {
First ->
part1(input)
|> adglent.inspect
|> io.println
Second ->
part2(input)
|> adglent.inspect
|> io.println
}
}
|
