From 964c72cc4fe03c06bd067fc7605cca96f8b94943 Mon Sep 17 00:00:00 2001 From: Irene Knapp Date: Thu, 9 Dec 2021 22:06:45 -0800 Subject: 10 --- 10/Cargo.toml | 11 +++++ 10/input | 102 ++++++++++++++++++++++++++++++++++++++ 10/src/main.rs | 148 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 10/tests/main.rs | 17 +++++++ 4 files changed, 278 insertions(+) create mode 100644 10/Cargo.toml create mode 100644 10/input create mode 100644 10/src/main.rs create mode 100644 10/tests/main.rs (limited to '10') diff --git a/10/Cargo.toml b/10/Cargo.toml new file mode 100644 index 0000000..6b36e1c --- /dev/null +++ b/10/Cargo.toml @@ -0,0 +1,11 @@ +[package] +name = "advent_10" +version = "0.1.0" +authors = ["Irene Knapp "] +edition = "2018" + +[dependencies] +advent_lib = { path = "../lib" } + +[dev-dependencies] +assert_cmd = "0.10" diff --git a/10/input b/10/input new file mode 100644 index 0000000..ca048fc --- /dev/null +++ b/10/input @@ -0,0 +1,102 @@ +[<<{[{([([({<{<>{}}>[[[]{}][[]<>])}{[(())][[<>{}]{[]{}}]})](([{<<>{}>[()<>]}<<<>()>{{}<>}>]{[{{}()}[(){}]]}) +[({[[(<{[<[<{({}[])(<>{})}(([]<>)[[]()])>{[<{}()><{}{}>][<[]()>({}())]}]<(<(()<>){{}{}}>({()()}(()[])))>>[([ +(<([[<(<<{((<<<>{}>{{}{}}>({()<>}{()<>}))<[(<><>)<<>()>]{((){}){[]<>}}>)}({<[(()[]){()[]}]{(( +<[(<{[{{([([{{{}<>}}{{<>()}<<>>}]){[[<[]<>>(())]<<<>{}>(())>][<<{}{}>(<>())>{<{}{}><{}<>>}]}]<<({{() +{(((<{{{<<{({{()[]){()[]}}({{}}[<>[]])){[{()<>}<()()>]}}>{[[{<[]{}>{{}()}}<<()[]>[{}[]]>]{[{(){}}(()[])]<({ +<(<{<<{{([[({{<>()}[(){}>}[(<>)(()[])])([[<>()]<[]()>])]{(<(<>()){[][]}>[((){}){[]{}}])[[{[]<>}({} +((<[<(([[{[{{[{}()]{<>[]}}}]{[{<()()>[{}[]]}[<[]{}>]]{{{<><>}[()[]]}<{{}{}}[<>()]>}}}[{{<{[][]}({}())><{ +[([{({[({<[[<([][])<(){}>><<<><>>[[]()]>]<<({}{}))[<<>[]>]>]{[(([]<>){[]<>}){[{}{}](()())}]}>[<<{<[][ +({{{(<{({((<({<>()})[(<>[])<{}()>]>{{<[]()><{}[])}[{[]{}}({}{})]})){{{[<(){}><[]<>>][<{}()>{(){} 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+[<((({((<<[[[{{}<>}{()<>}]]({(<>[])<()<>>}{(()()){{}{}}})]<<(({}<>))>{<<[]()>><[()()]<[]{}>>}>>>)(<<{<{<{ +(<(({(<(<<([<([]<>)[{}{}>>({{}()}[{}[]])]<({[]<>}[{}{}])<([][]){{}{}}>>)>{[(<<[][]><{}()>>{{<>{ diff --git a/10/src/main.rs b/10/src/main.rs new file mode 100644 index 0000000..35fbf71 --- /dev/null +++ b/10/src/main.rs @@ -0,0 +1,148 @@ +use advent_lib::prelude::*; + + +fn main() -> Result<()> { + let mut args = std::env::args(); + if args.len() != 2 { + eprintln!("Usage: advent input"); + } + let _ = args.next(); + let filename = args.next().unwrap(); + + let input = advent_lib::read_lines_file(&filename)?; + + let mut total_score = 0; + let mut incomplete_lines = Vec::new(); + for line in &input { + let mut chars = line.chars().peekable(); + let score = parse(&mut chars); + total_score += score; + + if score == 0 { + incomplete_lines.push(line.clone()); + } + } + println!("{}", total_score); + + let mut completion_scores = Vec::new(); + for line in &incomplete_lines { + let mut chars = line.chars().peekable(); + let completion = repair(&mut chars, true).unwrap(); + let mut score: i64 = 0; + for c in completion.chars() { + score *= 5; + score += match c { + ')' => 1, + ']' => 2, + '}' => 3, + '>' => 4, + _ => 0, + } + } + completion_scores.push(score); + } + completion_scores.sort(); + let second_score = completion_scores[completion_scores.len() / 2]; + println!("{}", second_score); + + Ok(()) +} + + +fn parse(chars: &mut std::iter::Peekable>) -> i64 { + match chars.next() { + None => { + return 0; + } + Some(open) => { + let open = open.clone(); + loop { + match chars.peek() { + None => { + return 0; + } + Some(c) => { + let c = *c; + if "([{<".contains(|d| c == d) { + let score = parse(chars); + if score != 0 { + return score; + } + } else { + let _ = chars.next(); + match (open, c) { + ('(', ')') => { return 0; } + ('[', ']') => { return 0; } + ('{', '}') => { return 0; } + ('<', '>') => { return 0; } + (_, ')') => { return 3; } + (_, ']') => { return 57; } + (_, '}') => { return 1197; } + (_, '>') => { return 25137; } + _ => { } + } + } + } + } + } + } + } +} + + +fn repair(chars: &mut std::iter::Peekable>, + is_top_level: bool) + -> Option +{ + loop { + match chars.next() { + None => { + return Some(String::new()); + } + Some(open) => { + let open = open.clone(); + loop { + match chars.peek() { + None => { + let mut result = String::new(); + result.push(match open { + '(' => ')', + '[' => ']', + '{' => '}', + '<' => '>', + _ => panic!("alas"), + }); + return Some(result); + } + Some(c) => { + let c = *c; + if "([{<".contains(|d| c == d) { + match repair(chars, false) { + None => { } + Some(mut result) => { + result.push(match open { + '(' => ')', + '[' => ']', + '{' => '}', + '<' => '>', + _ => panic!("alas"), + }); + return Some(result); + } + } + } else { + let _ = chars.next(); + if is_top_level { + break; + } else { + return None; + } + } + } + } + } + } + } + } +} + diff --git a/10/tests/main.rs b/10/tests/main.rs new file mode 100644 index 0000000..ef0958a --- /dev/null +++ b/10/tests/main.rs @@ -0,0 +1,17 @@ +use assert_cmd::prelude::*; +//use predicates::prelude::*; +use std::process::Command; + + +#[test] +fn personal_input() -> Result<(), Box> { + let mut command = Command::cargo_bin("advent_10")?; + + command.arg("input"); + command.assert().success().stdout( + "387363\n\ + 4330777059\n"); + + Ok(()) +} + -- cgit 1.4.1