From 0f7b59af469e2d92a155bae30faad098c3231299 Mon Sep 17 00:00:00 2001 From: Savanni D'Gerinel Date: Sun, 11 Dec 2022 00:37:55 -0500 Subject: [PATCH] Tons and tons of code to handle day 5a --- 2022/data/day5.txt | 511 +++++++++++++++++++++++++++++++++++++++++++++ 2022/src/day5.rs | 296 ++++++++++++++++++++++++++ 2022/src/main.rs | 3 + 3 files changed, 810 insertions(+) create mode 100644 2022/data/day5.txt create mode 100644 2022/src/day5.rs diff --git a/2022/data/day5.txt b/2022/data/day5.txt new file mode 100644 index 0000000..aef7951 --- /dev/null +++ b/2022/data/day5.txt @@ -0,0 +1,511 @@ + [G] [P] [M] + [V] [M] [W] [S] [Q] + [N] [N] [G] [H] [T] [F] + [J] [W] [V] [Q] [W] [F] [P] +[C] [H] [T] [T] [G] [B] [Z] [B] +[S] [W] [S] [L] [F] [B] [P] [C] [H] +[G] [M] [Q] [S] [Z] [T] [J] [D] [S] +[B] [T] [M] [B] [J] [C] [T] [G] [N] + 1 2 3 4 5 6 7 8 9 + +move 2 from 4 to 2 +move 6 from 9 to 7 +move 4 from 7 to 2 +move 2 from 4 to 1 +move 2 from 6 to 7 +move 1 from 3 to 8 +move 4 from 7 to 1 +move 2 from 3 to 2 +move 3 from 8 to 5 +move 3 from 1 to 4 +move 12 from 2 to 5 +move 2 from 6 to 8 +move 12 from 5 to 8 +move 3 from 7 to 9 +move 18 from 8 to 9 +move 2 from 8 to 6 +move 3 from 2 to 3 +move 14 from 9 to 4 +move 1 from 1 to 3 +move 7 from 9 to 3 +move 1 from 2 to 1 +move 8 from 4 to 5 +move 5 from 6 to 3 +move 2 from 7 to 9 +move 3 from 4 to 9 +move 4 from 9 to 6 +move 4 from 6 to 1 +move 8 from 4 to 6 +move 10 from 1 to 2 +move 13 from 3 to 2 +move 17 from 5 to 9 +move 2 from 5 to 1 +move 9 from 9 to 7 +move 1 from 3 to 6 +move 2 from 1 to 8 +move 11 from 2 to 4 +move 5 from 6 to 8 +move 1 from 6 to 3 +move 1 from 1 to 4 +move 3 from 8 to 6 +move 3 from 2 to 8 +move 9 from 7 to 9 +move 4 from 4 to 7 +move 1 from 9 to 5 +move 15 from 9 to 7 +move 7 from 8 to 3 +move 1 from 5 to 6 +move 2 from 6 to 9 +move 8 from 2 to 6 +move 3 from 4 to 3 +move 1 from 2 to 5 +move 4 from 9 to 3 +move 1 from 3 to 4 +move 13 from 6 to 2 +move 1 from 5 to 1 +move 4 from 4 to 9 +move 6 from 3 to 2 +move 11 from 2 to 7 +move 6 from 3 to 4 +move 3 from 3 to 2 +move 1 from 3 to 4 +move 1 from 1 to 3 +move 3 from 9 to 2 +move 1 from 3 to 1 +move 4 from 7 to 1 +move 1 from 9 to 5 +move 5 from 1 to 4 +move 11 from 2 to 4 +move 1 from 5 to 3 +move 1 from 2 to 3 +move 12 from 4 to 2 +move 2 from 7 to 2 +move 7 from 4 to 3 +move 5 from 4 to 1 +move 7 from 7 to 6 +move 4 from 1 to 8 +move 1 from 8 to 5 +move 8 from 3 to 2 +move 4 from 7 to 4 +move 13 from 7 to 1 +move 2 from 8 to 6 +move 5 from 4 to 9 +move 1 from 3 to 6 +move 1 from 5 to 8 +move 1 from 2 to 9 +move 4 from 2 to 6 +move 2 from 8 to 6 +move 10 from 1 to 3 +move 4 from 9 to 4 +move 2 from 1 to 3 +move 5 from 2 to 9 +move 4 from 9 to 2 +move 1 from 1 to 2 +move 13 from 2 to 4 +move 15 from 4 to 5 +move 3 from 6 to 8 +move 8 from 3 to 8 +move 1 from 4 to 2 +move 14 from 5 to 1 +move 1 from 5 to 4 +move 1 from 4 to 2 +move 8 from 6 to 7 +move 3 from 6 to 2 +move 2 from 9 to 1 +move 8 from 8 to 7 +move 9 from 1 to 5 +move 7 from 5 to 3 +move 14 from 7 to 9 +move 2 from 2 to 3 +move 7 from 2 to 1 +move 1 from 6 to 1 +move 4 from 9 to 2 +move 8 from 3 to 6 +move 2 from 4 to 3 +move 4 from 3 to 5 +move 5 from 5 to 7 +move 2 from 6 to 9 +move 6 from 6 to 2 +move 4 from 2 to 3 +move 1 from 6 to 2 +move 2 from 7 to 8 +move 13 from 9 to 5 +move 2 from 7 to 1 +move 14 from 1 to 5 +move 15 from 5 to 7 +move 3 from 8 to 7 +move 5 from 3 to 5 +move 6 from 5 to 7 +move 4 from 1 to 7 +move 1 from 2 to 5 +move 3 from 2 to 8 +move 11 from 5 to 2 +move 10 from 7 to 1 +move 1 from 3 to 4 +move 10 from 2 to 9 +move 1 from 5 to 8 +move 6 from 7 to 3 +move 1 from 4 to 6 +move 2 from 3 to 8 +move 1 from 2 to 1 +move 4 from 3 to 9 +move 3 from 1 to 6 +move 2 from 7 to 1 +move 1 from 5 to 6 +move 1 from 3 to 8 +move 4 from 1 to 4 +move 5 from 2 to 9 +move 3 from 1 to 4 +move 18 from 9 to 7 +move 4 from 8 to 4 +move 3 from 1 to 2 +move 1 from 9 to 7 +move 1 from 4 to 7 +move 1 from 6 to 2 +move 1 from 2 to 5 +move 25 from 7 to 3 +move 7 from 4 to 2 +move 8 from 7 to 9 +move 4 from 8 to 6 +move 1 from 8 to 5 +move 4 from 6 to 5 +move 2 from 9 to 5 +move 3 from 5 to 8 +move 4 from 6 to 4 +move 12 from 3 to 5 +move 11 from 3 to 2 +move 13 from 5 to 8 +move 4 from 9 to 6 +move 7 from 4 to 9 +move 2 from 6 to 2 +move 12 from 2 to 7 +move 1 from 6 to 3 +move 1 from 5 to 6 +move 2 from 5 to 3 +move 15 from 8 to 6 +move 4 from 6 to 7 +move 1 from 5 to 1 +move 10 from 2 to 8 +move 8 from 8 to 3 +move 8 from 6 to 8 +move 2 from 7 to 6 +move 9 from 9 to 7 +move 8 from 8 to 9 +move 1 from 1 to 3 +move 1 from 2 to 7 +move 7 from 3 to 1 +move 3 from 8 to 5 +move 3 from 1 to 6 +move 7 from 9 to 2 +move 2 from 3 to 7 +move 5 from 7 to 9 +move 17 from 7 to 5 +move 2 from 7 to 6 +move 10 from 6 to 3 +move 1 from 1 to 3 +move 6 from 9 to 3 +move 1 from 2 to 9 +move 2 from 7 to 9 +move 2 from 9 to 7 +move 1 from 5 to 8 +move 1 from 8 to 5 +move 6 from 2 to 5 +move 1 from 6 to 1 +move 5 from 3 to 5 +move 1 from 6 to 8 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from 5 to 6 +move 4 from 3 to 9 +move 2 from 9 to 8 +move 3 from 9 to 5 +move 23 from 8 to 1 +move 2 from 6 to 1 +move 1 from 5 to 7 +move 2 from 3 to 5 +move 2 from 9 to 5 +move 4 from 9 to 7 +move 2 from 9 to 4 +move 1 from 5 to 4 +move 5 from 8 to 5 +move 2 from 6 to 2 +move 3 from 7 to 3 +move 1 from 3 to 4 +move 3 from 2 to 8 +move 4 from 1 to 6 +move 2 from 6 to 3 +move 4 from 1 to 2 +move 3 from 8 to 1 +move 13 from 2 to 5 +move 4 from 3 to 2 +move 14 from 5 to 7 +move 5 from 2 to 7 +move 18 from 7 to 9 +move 4 from 4 to 7 +move 2 from 5 to 4 +move 17 from 9 to 5 +move 1 from 9 to 1 +move 1 from 7 to 2 +move 5 from 7 to 2 +move 18 from 1 to 4 +move 1 from 7 to 3 +move 1 from 3 to 6 +move 2 from 1 to 3 +move 1 from 6 to 5 +move 2 from 6 to 8 +move 1 from 8 to 9 +move 1 from 8 to 3 +move 13 from 4 to 5 +move 1 from 1 to 6 +move 3 from 2 to 4 +move 1 from 6 to 1 +move 3 from 2 to 9 +move 3 from 3 to 1 +move 5 from 4 to 5 +move 30 from 5 to 3 +move 1 from 4 to 6 +move 1 from 9 to 8 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to 7 +move 10 from 5 to 9 +move 3 from 9 to 8 +move 7 from 6 to 2 +move 1 from 7 to 8 +move 3 from 5 to 8 +move 3 from 6 to 2 +move 6 from 8 to 9 +move 1 from 5 to 3 +move 2 from 3 to 1 +move 2 from 4 to 8 +move 6 from 6 to 9 +move 1 from 1 to 4 +move 17 from 9 to 2 +move 1 from 4 to 1 +move 2 from 7 to 8 +move 1 from 9 to 8 +move 3 from 8 to 4 +move 3 from 1 to 4 +move 9 from 8 to 2 +move 1 from 8 to 4 +move 12 from 2 to 7 +move 4 from 7 to 4 +move 1 from 8 to 1 +move 10 from 4 to 2 +move 3 from 3 to 2 +move 1 from 9 to 7 +move 11 from 7 to 3 +move 1 from 3 to 1 +move 2 from 3 to 9 +move 1 from 3 to 7 +move 2 from 1 to 9 +move 1 from 6 to 5 +move 7 from 3 to 6 +move 1 from 7 to 3 +move 3 from 3 to 4 +move 1 from 5 to 7 +move 2 from 4 to 3 +move 2 from 4 to 8 +move 1 from 7 to 6 +move 2 from 6 to 8 +move 1 from 9 to 2 +move 1 from 9 to 5 +move 1 from 5 to 1 +move 1 from 8 to 6 +move 1 from 3 to 2 +move 4 from 6 to 1 +move 5 from 1 to 4 +move 11 from 2 to 4 +move 2 from 8 to 2 +move 1 from 8 to 9 +move 27 from 2 to 5 +move 4 from 6 to 3 +move 3 from 2 to 4 +move 2 from 5 to 9 +move 1 from 5 to 7 +move 2 from 9 to 5 +move 14 from 4 to 7 +move 2 from 4 to 7 +move 3 from 4 to 8 +move 4 from 3 to 1 +move 4 from 1 to 8 +move 2 from 3 to 9 +move 2 from 9 to 3 +move 7 from 8 to 9 +move 1 from 3 to 8 +move 2 from 3 to 2 +move 25 from 5 to 9 +move 1 from 5 to 8 +move 1 from 8 to 7 +move 26 from 9 to 1 +move 23 from 1 to 5 +move 7 from 9 to 7 +move 1 from 9 to 8 +move 1 from 9 to 2 +move 5 from 7 to 1 +move 20 from 5 to 6 +move 1 from 7 to 6 +move 2 from 5 to 3 +move 1 from 8 to 6 +move 21 from 6 to 8 +move 1 from 6 to 4 +move 1 from 1 to 7 +move 2 from 1 to 6 +move 1 from 1 to 3 +move 1 from 2 to 5 +move 1 from 2 to 6 +move 2 from 7 to 6 +move 6 from 7 to 9 +move 3 from 1 to 2 +move 17 from 8 to 1 +move 1 from 4 to 1 +move 2 from 6 to 9 +move 3 from 8 to 9 +move 2 from 3 to 7 +move 2 from 9 to 8 +move 4 from 7 to 3 +move 4 from 3 to 4 +move 2 from 5 to 8 +move 4 from 8 to 4 +move 3 from 6 to 8 +move 18 from 1 to 5 +move 1 from 3 to 4 +move 3 from 2 to 4 +move 5 from 9 to 1 +move 10 from 7 to 5 +move 5 from 1 to 3 +move 5 from 3 to 5 +move 5 from 4 to 3 +move 2 from 4 to 2 +move 5 from 8 to 3 +move 25 from 5 to 2 +move 3 from 3 to 6 +move 1 from 1 to 3 +move 3 from 6 to 7 +move 1 from 4 to 2 +move 1 from 5 to 8 +move 2 from 4 to 9 +move 1 from 8 to 1 +move 20 from 2 to 7 +move 10 from 7 to 1 +move 1 from 1 to 7 +move 4 from 7 to 8 +move 5 from 5 to 4 +move 4 from 8 to 6 +move 1 from 1 to 3 +move 5 from 7 to 4 +move 2 from 1 to 5 +move 4 from 9 to 1 +move 3 from 2 to 5 +move 5 from 5 to 1 +move 1 from 9 to 1 +move 11 from 1 to 3 +move 1 from 6 to 2 +move 7 from 3 to 5 +move 11 from 3 to 7 +move 1 from 2 to 6 +move 7 from 7 to 8 +move 1 from 9 to 1 +move 2 from 3 to 1 +move 1 from 5 to 3 +move 4 from 1 to 6 +move 4 from 6 to 3 +move 9 from 4 to 5 +move 2 from 8 to 2 +move 4 from 6 to 9 +move 3 from 2 to 4 +move 1 from 8 to 6 diff --git a/2022/src/day5.rs b/2022/src/day5.rs new file mode 100644 index 0000000..72358cd --- /dev/null +++ b/2022/src/day5.rs @@ -0,0 +1,296 @@ +use nom::{ + bytes::complete::tag, + character::complete::{anychar, char, space0, space1, u8}, + combinator::eof, + multi::{many0, many1, separated_list0, separated_list1}, + sequence::{delimited, terminated}, + IResult, Parser, +}; +use std::fmt::Debug; + +const INPUT: &str = include_str!("../data/day5.txt"); + +pub fn part1() -> String { + let (stacks, commands) = input(INPUT); + tops(run_commands(stacks, commands)) +} + +pub fn part2() -> String { + unimplemented!() +} + +fn run_commands(stacks: Stacks, commands: Vec) -> Stacks { + commands + .into_iter() + .fold(stacks, |stacks, command| stacks.run_command(command)) +} + +fn tops(stacks: Stacks) -> String { + stacks + .0 + .iter() + .map(|stack| stack.top()) + .filter_map(|v| v) + .collect::() +} + +fn print_matrix(matrix: &Matrix>) { + for row in matrix.data.clone() { + for val in row { + print!(" {} ", val.unwrap_or(' ')); + } + println!(""); + } +} + +#[derive(Clone, Debug, PartialEq)] +struct Command { + count: u8, + source: u8, + dest: u8, +} + +#[derive(Clone, Debug, PartialEq)] +struct Matrix { + rows: usize, + cols: usize, + data: Vec>, +} + +impl Matrix { + fn new(data: Vec>) -> Self { + let rows = data.len(); + let cols = data + .iter() + .fold(0, |max, row| std::cmp::max(max, row.len())); + Self { rows, cols, data } + } + + fn rotate_cw(self) -> Self { + let mut data = Vec::new(); + for col_idx in 0..self.cols { + let mut row = vec![]; + for row_idx in 0..self.rows { + row.push(self.data[self.rows - row_idx - 1][col_idx]); + } + data.push(row); + } + + Self { + rows: self.cols, + cols: self.rows, + data, + } + } +} + +#[derive(Debug)] +struct Stack(Vec); + +impl Stack { + fn from_option_vec(data: Vec>) -> Self { + Stack(data.into_iter().filter_map(|v| v).collect::>()) + } + + fn push(&mut self, val: T) { + self.0.push(val); + } + + fn pop(&mut self) -> Option { + self.0.pop() + } + + fn top(&self) -> Option { + if self.0.len() > 0 { + Some(self.0[self.0.len() - 1]) + } else { + None + } + } +} + +#[derive(Debug)] +struct Stacks(Vec>); + +impl Stacks { + fn run_command(mut self, cmd: Command) -> Self { + let Command { + count, + source, + dest, + } = cmd; + (0..count).for_each(|_| { + let val = self.0[(source - 1) as usize].pop().unwrap(); + self.0[(dest - 1) as usize].push(val); + }); + self + } +} + +fn input(data: &str) -> (Stacks, Vec) { + let (_, result) = parser(data).unwrap(); + result +} + +fn parser(input: &str) -> IResult<&str, (Stacks, Vec)> { + let (input, rows) = many0(parse_crate_row)(input)?; + + let (input, _) = parse_stack_numbers(input)?; + + let (input, _) = space0(input)?; + let (input, _) = tag("\n")(input)?; + + let (input, commands) = many1(terminated(parse_command, tag("\n").or(eof)))(input)?; + + let matrix = Matrix::new(rows); + + let stacks = matrix + .rotate_cw() + .data + .into_iter() + .map(|v| Stack::from_option_vec(v.clone())) + .collect::>>(); + Ok((input, (Stacks(stacks), commands))) +} + +fn parse_command(input: &str) -> IResult<&str, Command> { + let (input, _) = tag("move ")(input)?; + let (input, count) = u8(input)?; + let (input, _) = tag(" from ")(input)?; + let (input, source) = u8(input)?; + let (input, _) = tag(" to ")(input)?; + let (input, dest) = u8(input)?; + + Ok(( + input, + Command { + count, + source, + dest, + }, + )) +} + +fn parse_stack_numbers(input: &str) -> IResult<&str, usize> { + let (input, _) = space0(input)?; + let (input, stack_numbers) = separated_list1(space1, u8)(input)?; + let (input, _) = space0(input)?; + let (input, _) = tag("\n")(input)?; + Ok((input, stack_numbers.len())) +} + +fn parse_crate_row(input: &str) -> IResult<&str, Vec>> { + let (input, cells) = terminated(separated_list0(char(' '), parse_cell), tag("\n"))(input)?; + Ok((input, cells)) +} + +fn parse_cell(input: &str) -> IResult<&str, Option> { + parse_crate.or(parse_space).parse(input) +} + +fn parse_crate(input: &str) -> IResult<&str, Option> { + delimited(char('['), anychar, char(']')) + .map(|c| Some(c)) + .parse(input) +} + +fn parse_space(input: &str) -> IResult<&str, Option> { + tag(" ").map(|_| None).parse(input) +} + +#[cfg(test)] +mod test { + use super::*; + + const TEST_DATA: &str = " [D] +[N] [C] +[Z] [M] [P] + 1 2 3 + +move 1 from 2 to 1 +move 3 from 1 to 3 +move 2 from 2 to 1 +move 1 from 1 to 2"; + + fn with_input(test: F) + where + F: Fn((Stacks, Vec)) -> () + std::panic::UnwindSafe, + { + test(input(TEST_DATA)); + } + + #[test] + fn it_can_parse_test_data() { + with_input(|(stacks, commands)| { + assert_eq!(stacks.0[0].0, vec!['Z', 'N']); + assert_eq!(stacks.0[1].0, vec!['M', 'C', 'D']); + assert_eq!(stacks.0[2].0, vec!['P']); + + assert_eq!(commands.len(), 4); + assert_eq!( + commands[0], + Command { + count: 1, + source: 2, + dest: 1 + } + ); + assert_eq!( + commands[3], + Command { + count: 1, + source: 1, + dest: 2 + } + ); + }); + } + + #[test] + fn it_can_follow_commands() { + with_input(|(stacks, commands)| { + let stacks = stacks.run_command(commands[0].clone()); + assert_eq!(stacks.0[0].0, vec!['Z', 'N', 'D']); + assert_eq!(stacks.0[1].0, vec!['M', 'C']); + assert_eq!(stacks.0[2].0, vec!['P']); + }); + + with_input(|(stacks, commands)| { + let stacks = run_commands(stacks, commands); + assert_eq!(stacks.0[0].0, vec!['C']); + assert_eq!(stacks.0[1].0, vec!['M']); + assert_eq!(stacks.0[2].0, vec!['P', 'D', 'N', 'Z']); + }); + } + + #[test] + fn it_can_find_tops() { + with_input(|(stacks, commands)| { + let stacks = run_commands(stacks, commands); + assert_eq!(tops(stacks), "CMZ"); + }); + } + + #[test] + fn it_can_rotate_symmetrix_matrix() { + let matrix = Matrix::new(vec![vec!['A', 'B'], vec!['C', 'D']]); + let expected = Matrix::new(vec![vec!['C', 'A'], vec!['D', 'B']]); + assert_eq!(matrix.rotate_cw(), expected); + } + + #[test] + fn it_can_rotate_asymmetric_matrix() { + let matrix = Matrix::new(vec![ + vec![Some('A'), Some('B'), Some('C')], + vec![Some('D'), Some('E'), Some('F')], + ]); + let expected = Matrix::new(vec![ + vec![Some('D'), Some('A')], + vec![Some('E'), Some('B')], + vec![Some('F'), Some('C')], + ]); + print_matrix(&matrix); + print_matrix(&matrix.clone().rotate_cw()); + assert_eq!(matrix.rotate_cw(), expected); + } +} diff --git a/2022/src/main.rs b/2022/src/main.rs index f7e89a5..3d36ba3 100644 --- a/2022/src/main.rs +++ b/2022/src/main.rs @@ -2,6 +2,7 @@ mod day1; mod day2; mod day3; mod day4; +mod day5; fn main() { let day = std::env::args().skip(1).next(); @@ -15,6 +16,8 @@ fn main() { Some("3b") => day3::part2(), Some("4a") => day4::part1(), Some("4b") => day4::part2(), + Some("5a") => day5::part1(), + Some("5b") => day5::part2(), _ => panic!("unrecognized day"), };