Day 1 done
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@@ -1,3 +1,2 @@
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pub mod part1;
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pub mod part2;
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@@ -5,7 +5,7 @@ use day_1::part2::part2;
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fn main() {
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let input = include_str!("./input.txt");
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let (_,part1_result) = part1(input).unwrap();
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let (_, part1_result) = part1(input).unwrap();
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println!("part 1: {part1_result}");
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let part2_result = part2(input);
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println!("part 2: {part2_result}");
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@@ -1,14 +1,32 @@
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use nom::{multi::{separated_list1}, self, character::complete::{alphanumeric1, newline}};
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use nom::{
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self,
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character::complete::{alphanumeric1, newline},
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multi::separated_list1,
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};
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pub fn part1(input: &str) -> nom::IResult<&str,String> {
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pub fn part1(input: &str) -> nom::IResult<&str, String> {
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let (_, values) = parse_input(input)?;
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println!("{values:?}");
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Ok(("", values.iter().map(|v| v.first().unwrap() * 10 + v.last().unwrap() ).sum::<u32>().to_string()))
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Ok((
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"",
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values
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.iter()
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.map(|v| v.first().unwrap() * 10 + v.last().unwrap())
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.sum::<u32>()
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.to_string(),
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))
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}
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fn parse_input(input: &str) -> nom::IResult<&str, Vec<Vec<u32>>> {
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let (i, j) = separated_list1(newline, alphanumeric1)(input)?;
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let res = j.iter().map(|v| v.chars().filter_map(|x| x.to_digit(10)).collect::<Vec<u32>>()).collect::<Vec<Vec<u32>>>();
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let res = j
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.iter()
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.map(|v| {
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v.chars()
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.filter_map(|x| x.to_digit(10))
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.collect::<Vec<u32>>()
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})
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.collect::<Vec<Vec<u32>>>();
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Ok((i, res))
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}
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@@ -25,4 +43,5 @@ treb7uchet";
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fn part1_works() {
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let (_, result) = part1(INPUT).unwrap();
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assert_eq!(result, "142".to_string());
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}}
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}
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}
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@@ -1,43 +1,46 @@
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pub fn part2(input: &str) -> String {
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let values = input.lines().map(parse_line).collect::<Vec<Vec<u32>>>();
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println!("{values:?}");
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values.iter().map(|v| v.first().unwrap() * 10 + v.last().unwrap() ).sum::<u32>().to_string()
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values
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.iter()
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.map(|v| v.first().unwrap() * 10 + v.last().unwrap())
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.sum::<u32>()
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.to_string()
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}
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fn parse_line(line: &str) -> Vec<u32> {
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(0..line.len()).filter_map(|index| {
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let reduced_line = &line[index..];
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let result = if reduced_line.starts_with("one") {
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Some(1)
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} else if reduced_line.starts_with("two"){
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Some(2)
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} else if reduced_line.starts_with("three"){
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Some(3)
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} else if reduced_line.starts_with("four"){
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Some(4)
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} else if reduced_line.starts_with("five"){
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Some(5)
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} else if reduced_line.starts_with("six"){
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Some(6)
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} else if reduced_line.starts_with("seven"){
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Some(7)
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} else if reduced_line.starts_with("eight"){
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Some(8)
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} else if reduced_line.starts_with("nine"){
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Some(9)
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} else if reduced_line.starts_with("zero"){
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Some(0)
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} else {
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reduced_line.chars().next().unwrap().to_digit(10)
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};
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(0..line.len())
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.filter_map(|index| {
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let reduced_line = &line[index..];
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let result = if reduced_line.starts_with("one") {
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Some(1)
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} else if reduced_line.starts_with("two") {
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Some(2)
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} else if reduced_line.starts_with("three") {
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Some(3)
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} else if reduced_line.starts_with("four") {
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Some(4)
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} else if reduced_line.starts_with("five") {
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Some(5)
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} else if reduced_line.starts_with("six") {
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Some(6)
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} else if reduced_line.starts_with("seven") {
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Some(7)
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} else if reduced_line.starts_with("eight") {
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Some(8)
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} else if reduced_line.starts_with("nine") {
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Some(9)
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} else if reduced_line.starts_with("zero") {
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Some(0)
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} else {
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reduced_line.chars().next().unwrap().to_digit(10)
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};
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result
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}).collect()
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result
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})
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.collect()
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}
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#[cfg(test)]
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mod test {
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use super::*;
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@@ -52,6 +55,7 @@ zoneight234
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#[test]
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fn part2_works() {
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let result = part2(INPUT);
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let result = part2(INPUT);
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assert_eq!(result, "281".to_string());
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}}
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}
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}
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