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Code Issues Projects Releases Wiki Activity

Implementation day 10 2021

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Bert Peters
2021-12-10 10:46:02 +01:00
parent dde9c0adbf
commit 50cd6d8171
3 changed files with 210 additions and 4 deletions
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[(<[(({{<{{[{({})}{<{}{}><()<>>}]}[{[({}{})]([{}()](<>{}))}[<<[]()]>[<[]<>>{[]()}]]]}{[[[{[][]}{[]()}]
(<<{((({<(<{([()[]]<[]<>>)}>({[{<>()}]<[<>()]({}())>})){{[(<<><>>{<>()})<{[]{}}>][{[[]()]<[]()>}
{({([({[[([<{(())([][])}<(<>())[[][]]>>{{{{}{}}{<>{}}}({{}<>}<<>()>)}]<<((<><>))<<[]>((){})>>[<{{}{}}
(<[{{{[[[<[[[([]<>)]{{()()}<()()>}][({()<>}(()()))[<[][]>[[]<>]]]]([{[(){}]}(<[]{}>{{}()))]<
{(<<({<{<<[[<[[]{}]>]<[<{}{}>[{}[]]]{[<>{})({})}>]><([[{(){}}{()[]}]])>><{({<[{}()]<{}[]>>(<
<<[[<<[({[<[{{[]()}[()()]}[<{}{}>[<>]]]><[[(<>[])]]{{{{}<>}[{}()]}{<()>[{}[]]}}>](({<((){}
<{[[((<{{[[(([(){}][()<>]))[(<()()>[[]<>]){[(){}][()[]]}]]]<([<[{}{}]([]<>)><<{}<>>{{}{}}>]<({[]{}}[{}{}]
<<<{<[[[[([<([[]<>])[[<>{}][[]<>]]>{{[{}{}]}[[[]()]]}][[<((){})<[]<>>>]<{[(){}][[]<>]}<<[][]](()())>>]){<((
[<{{({<<[{{<<(()())[{}[]]>{[<>{}]<[]<>>}>{[([]<>)[{}<>]](({}<>)[(){}])}}}[[(<{()}{<>()}>)<{<{}{}>([
<{<[{[[<[({{[[{}[]][()()>]((<><>)[[]{}])}{({{}{}}[()])<{<>{}}(<>[])>}}<<(<<>[]>[()])>>)]({{[([<>])(<{}[]>{
(({<{<{[[([<<{{}{}}>(<<>{}><()()>)>]{{(<{}>{{}[]})}(<([][]][<>[]]>{{<>{}}[<><>]})})(<[{{<>()}({}{})}{{{}[]}{<
{{[<<{{(({{{<{<>{}}{[]{}}>[<[]{}>{()()})}}(<({[]()}[()<>])[{<>()}<[]()>]>[[[{}[]][<>{}]]<{<
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<<({{[([{{<[[<()()>{(){}}]{{()<>}[(){}]}]{[({}{})([]<>)]}>(<([{}()](()[]))({<>()}<<>[]>)>[<[()<>]<
{(<{{([{<{<(<({}{})([]())>)>{[{{{}[]}(<>{})}{([])<{}<>>}]<{<{}()><()[]>}<{[]{}}<[]>>>>}>}<(<<([
([([(<{<[(<[{<<><>>(()<>)}(([]{}))][<(<>{})<{}>>{[()[]](<><>)}]>[[[{[]{}}[[]{}]]]<{[()[]]}[[{}{}]<<><>>]>])
{<<({({{{[({[[<>[]]({}())]{[{}()]}}({[()()]{[]<>}}((()<>)<[]{}>))){[{{{}()}{{}()}}]}]}<<<[[<[]()>][
{{[[[{<<[(([{[<>{}]<<><>>}{{<>}{[]<>}}]<[<<>[]>({}{})]>)({<{()()}>{{()[]}({}())}})}]<([{[<[][]>{()[]}]}]
(<<[<[[[<{{[{{()}[{}[]]}[<{}<>>{[]{}}]]{{[()[]]<(){}>}}}(((<{}{}>{()()}))[<{<>()}{()<>}><[
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(<[<[(([({{[({<>[]}[<>[]])[([]{})[<>[]]]]([<{}}[{}<>]][(()()){{}()}])}([<({}())[[]<>]>([[]{}]
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<[[{({[<<<{{<[<>{}]({}<>)>(<()[]><[]>)}(<{{}()}<{}{}>>{{()}<[][]>})}[{({[]{}}(()[]))<[[]{}][[]{}]>}<{{<>{
{({[[<{<([<((({}{})[{}{}])){{[()<>]<<>()>}[(<><>){[]}]}><<<<()<>>(()<>)>>[{([]){<>{}}}]>]){({{[{{}
(<<[{[<<({<{<[<>[]][{}<>]>([{}<>]<<>()>)}{(<{}{}>{{}()})<([])>}>{(({[]())(<>[])){[[]<>][<><>]}
[({(((<(<<{({<()()>({}()>}((<>[])[[]]))}>{<(<({}<>)([]())>[{()<>}<<>>])<<([])<[]()>>{(<>{})[<>{}]}>>[[
<<{[(({<<{[{{<<>()>{<>{}}}({[]}{()})}][<[[[]()]]<<{}{}}[<>()]>>]}[<(([{}{}]<()<>>){{()<>}[[]<>]})<{<[
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[[[[<[<[[[<(([<>{}]<<>()>)(<<>()>{{}{}}))[([()()]([]<>))]>(<[([]())<[]<>>]{<{}{}>{{}{}}}){(<()[]
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{({[[<({<{[[[[[]<>](<>{})]((<>{})<[]()>)]([<()[]>({}<>)][[[]{}>[{}()]])]{({<[][]><[]()>}<(<>{})>)((({})
{[([[{<<[{<<[<()()>[{}[]]]>{(({}{})([]<>))[[{}()][()<>]]}>[<(([][])){[{}{}][{}{}]}>{{<(){}>([]<>)}
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<(({{<<[[<<[[(<>[]){[][]}]{({}())(()<>)}]{({{}<>})}><([<<>()><{}[]>][[<>{}]({}())])[(([][])({}<
[<<{{{[[[((<{([][])<<>()>}((<><>)([]{}))>))[<(<[<>()]><([][])<<><>>>)>[[<<{}{}>(<><>)><{[]{}}>}{({
<<{<<[[[(((({{[][]}[{}[]]}(<<>{}><{}<>>))[(([]<>)<()[]>)<[<><>]>]))<<(<<<>{}>>{(<>[])})<[<<
[<<{({{<[<[<<({}[])(<><>)>(([]{})([]<>))>]>]{[(<<{(){}}[[]<>]>>){([<{}()>[()()]](([]())[<><>]))
{({<[<[{(<{[([[]<>]{<>})<{<>[]}([])>]}<{((<>[])[{}[]}){{{}{}}<[]<>>}}<{[[]{}](()[])}<(()())
(({{<{<[[(<[([<>()][[]()])<({}<>)(()())>]{<<<>[]>{(){}}>}>([{({}())}{<[]>(())}]{<<[][]>({}[])>}))]
{{<{{(<[[[{<<<[][]><{}[]>><(())[{}[]]>>}][<(([[][]][<>{}])(<[][]>)){{([][])<{}{}>}[[[]{}]{[
[([{<[[<[{([{<[]{}>(<>{})}]<{[[]()]}[<()<>>]>)}][([[[([])<<>()>]{<{}<>>[()<>]}}((<{}{}>(()<>))(<{}
([<{(<({((<{<{()[]]{[]<>}>(<[][]>(()<>))}{<[()[]](()())>{([][])<<>>}}>))(<[(({[]()}(()[]))([(){}]{<>
([{{[{(<[((<<[[]()](()())>{<{}()}{[]}}>{(({}<>))<<<>{}>[{}()]>})[[((<>)<[]<>>)([()()]{<>{}})]<{[(){}]{[
<[<[<[[[({{{[[()<>]([]())]}}{({[()()]}{{<>[]}<<>{}>})[[{[]()}[{}{}]][{<>()}<{}{}>])}})<<{([{()[]}<[]
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([<(((<[<({<[({}{})((){})]{{()<>}<[]<>>}>{[{()[]}<<><>>]({{}<>}[[]<>])}})[[{([[][]](()[]))({()[]})}((((
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[(({({{([([{{<[]<>>([][])}<[()<>]>}{(({}())[<>()])}]<({{{}{}}}({{}<>}<[]{}>))>)(<[[<()>((){})]

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use std::io::Read;
pub fn part1(_input: &mut dyn Read) -> String {
todo!()
use crate::common::LineIter;
macro_rules! check_matching {
($stack:ident, $total:ident, $match:literal, $score:literal) => {{
if let Some($match) = $stack.pop() {
continue;
} else {
$total += $score;
break;
}
}};
($stack:ident, $match:literal) => {{
if let Some($match) = $stack.pop() {
continue;
} else {
$stack.clear();
break;
}
}};
}
pub fn part2(_input: &mut dyn Read) -> String {
todo!()
pub fn part1(input: &mut dyn Read) -> String {
let mut reader = LineIter::new(input);
let mut stack = Vec::new();
let mut total = 0;
while let Some(line) = reader.next() {
stack.clear();
for &c in line.as_bytes() {
match c {
b'(' | b'[' | b'{' | b'<' => stack.push(c),
b')' => check_matching!(stack, total, b'(', 3),
b']' => check_matching!(stack, total, b'[', 57),
b'}' => check_matching!(stack, total, b'{', 1197),
b'>' => check_matching!(stack, total, b'<', 25137),
_ => panic!("Invalid bracket '{}'", char::from(c)),
}
}
}
total.to_string()
}
pub fn part2(input: &mut dyn Read) -> String {
let mut reader = LineIter::new(input);
let mut stack = Vec::new();
let mut scores = Vec::new();
while let Some(line) = reader.next() {
for &c in line.as_bytes() {
match c {
b'(' | b'[' | b'{' | b'<' => stack.push(c),
b')' => check_matching!(stack, b'('),
b']' => check_matching!(stack, b'['),
b'}' => check_matching!(stack, b'{'),
b'>' => check_matching!(stack, b'<'),
_ => panic!("Invalid bracket '{}'", char::from(c)),
}
}
if !stack.is_empty() {
let score = stack
.drain(..)
.rev()
.map(|c| match c {
b'(' => 1,
b'[' => 2,
b'{' => 3,
b'<' => 4,
_ => 0,
})
.fold(0u64, |acc, s| 5 * acc + s);
scores.push(score);
}
}
scores.sort_unstable();
scores[scores.len() / 2].to_string()
}
#[cfg(test)]
mod tests {
use super::*;
use crate::test_implementation;
const SAMPLE: &[u8] = include_bytes!("samples/10.txt");
#[test]
fn sample_part1() {
test_implementation(part1, SAMPLE, 26397);
}
#[test]
fn sample_part2() {
test_implementation(part2, SAMPLE, 288957);
}
}

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[({(<(())[]>[[{[]{<()<>>
[(()[<>])]({[<{<<[]>>(
{([(<{}[<>[]}>{[]{[(<()>
(((({<>}<{<{<>}{[]{[]{}
[[<[([]))<([[{}[[()]]]
[{[{({}]{}}([{[{{{}}([]
{<[[]]>}<{[{[{[]{()[[[]
[<(<(<(<{}))><([]([]()
<{([([[(<>()){}]>(<<{{
<{([{{}}[<[[[<>{}]]]>[]]