ughh what
This commit is contained in:
RingOfStorms (Joshua Bell)
parent
88bb36a046
commit
1a6b47949b
2 changed files with 279 additions and 0 deletions
140
aoc_puzzle_cache/day_3
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140
aoc_puzzle_cache/day_3
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..975..95..................717..........................................747................................................622..............
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................/47...........@....701...610.........252.660*.............*..236.....323..........108........653............................
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.......69............313..............$...$...*....@.........640........81.....*................................*332..92....................
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........................*...210.............767...912...367.......505.......817..................*.........478.........=....223.....568.....
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139
src/bin/day3.rs
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139
src/bin/day3.rs
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use aoc23::prelude::*;
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use std::fmt::Display;
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#[derive(Debug)]
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enum Item {
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Digit(u32),
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Symbol,
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None,
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}
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#[derive(Debug)]
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struct Number {
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pub value: usize,
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pub row_index: usize,
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pub char_start: usize,
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pub char_end: usize,
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}
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struct Grid {
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pub rows: Vec<Vec<Item>>,
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}
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impl Grid {
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fn get_item(&self, row: usize, col: usize) -> Option<&Item> {
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// println!("\t\t\tRow:{} Col:{} {:?}", row, col, self.rows.get(row));
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match self.rows.get(row) {
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Some(row) => row.get(col),
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None => None,
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}
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}
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fn get_adjacent_items(&self, row: usize, start: usize, end: usize) -> Vec<&Item> {
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// println!("\tget adj: r{} s{} e{}", row, start, end);
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let row_start = if row > 0 { row - 1 } else { 0 };
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let col_start = if start > 0 { start - 1 } else { 0 };
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let mut items: Vec<&Item> = vec![];
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for row_i in row_start..=row + 1 {
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for col_i in col_start..=end + 1 {
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if row_i != row || col_i < start || col_i > end {
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let item = self.get_item(row_i, col_i);
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// println!("\t\trow: {} col: {} item: {:?}", row_i, col_i, item);
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if let Some(item) = item {
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items.push(item);
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}
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}
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}
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}
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return items;
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}
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fn print(&self) {
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for row in self.rows.iter() {
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for col in row {
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match col {
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Item::Digit(_) => print!("d"),
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Item::Symbol => print!("s"),
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Item::None => print!("."),
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}
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}
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println!();
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}
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}
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}
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fn part1(input: String) -> Result<impl Display> {
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let mut grid = Grid { rows: vec![] };
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let mut numbers: Vec<Number> = vec![];
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for (row_index, line) in input.lines().enumerate() {
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let mut row: Vec<Item> = vec![];
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let mut num: Option<usize> = None;
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let mut char_start = 0;
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for (char_index, char) in line.trim().chars().enumerate() {
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if let Some(digit) = char.to_digit(10) {
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row.push(Item::Digit(digit));
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num = if let Some(existing_num) = num {
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Some(existing_num * 10 + digit as usize)
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} else {
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char_start = char_index;
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Some(digit as usize)
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};
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} else {
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if char == '.' {
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// println!("Ended number seq, hit dot after {:?} {}", num, char);
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row.push(Item::None);
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} else {
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// println!("Ended number seq, hit symbol after {:?} {}", num, char);
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row.push(Item::Symbol)
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}
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if let Some(value) = num {
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numbers.push(Number {
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value,
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row_index,
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char_start,
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char_end: char_index - 1,
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});
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num = None;
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char_start = 0;
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}
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}
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}
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grid.rows.push(row);
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}
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let grid = grid;
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let mut sum = 0;
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for number in numbers.iter() {
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let adjacent =
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grid.get_adjacent_items(number.row_index, number.char_start, number.char_end);
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let is_part_no = adjacent.iter().any(|item| !matches!(item, Item::None));
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// println!(
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// "Checking number: {:?}, is part: {}\tadjacent: {:?}",
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// number.value, is_part_no, adjacent
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// );
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if is_part_no {
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print!("{}, ", number.value);
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sum += number.value;
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}
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}
|
||||
// grid.print();
|
||||
Ok(sum)
|
||||
}
|
||||
|
||||
#[tokio::main]
|
||||
async fn main() -> Result<()> {
|
||||
println!("Day 3");
|
||||
println!("=====");
|
||||
let input = utils::aoc::get_puzzle_input(3).await?;
|
||||
|
||||
// ```
|
||||
// let input = "467..114..
|
||||
// ```
|
||||
//
|
||||
// ..._...... ..35..633. ......#... 617_...... .....+.58. ..592..... ......755.
|
||||
// ...$.*.... .664.598.." .to_owned();
|
||||
println!("part 1: {}", part1(input.clone())?);
|
||||
|
||||
// println!("part 2: {}", part2(input.clone())?);
|
||||
Ok(())
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue