commit bdb95867dff251d86b24bb5c761c24a250198782 · aylac.top/advent_of_code

2015/1/rust/Cargo.lock

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       # This file is automatically @generated by Cargo.

     

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       # It is not intended for manual editing.

     

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       version = 4

     

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       [[package]]

     

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       name = "rust"

     

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       version = "0.1.0"

2015/1/rust/Cargo.toml

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       [package]

     

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       name = "rust"

     

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       version = "0.1.0"

     

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       edition = "2024"

     

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       [dependencies]

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2015/1/rust/src/main.rs

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       use std::{fs, ops::ControlFlow};

     

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       fn main() {

     

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           let input: String = match fs::read_to_string("../input.txt") {

     

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               Ok(input) => input,

     

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               _ => panic!("invalid input!!!"),

     

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           };

     

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           let input = input.trim();

     

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           let part1 = input.chars().fold(0, |floor, v| {

     

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               (match v {

     

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                   '(' => 1,

     

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                   ')' => -1,

     

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                   _ => 0,

     

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               }) + floor

     

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           });

     

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           println!("{}", part1.to_string());

     

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           let part2 = input.chars().try_fold((0, 1), |state, v| {

     

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               let (floor, step) = state;

     

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               let floor = (match v {

     

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                   '(' => 1,

     

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                   ')' => -1,

     

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                   _ => 0,

     

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               }) + floor;

     

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               match floor {

     

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                   -1 => ControlFlow::Break(step),

     

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                   _ => ControlFlow::Continue((floor, step + 1)),

     

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               }

     

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           });

     

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           let part2 = match part2 {

     

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               ControlFlow::Break(part2) => part2,

     

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               _ => panic!("something bad happened"),

     

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           };

     

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           println!("{}", part2.to_string());

     

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       }