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Day 1

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Daniel S. 2020-12-01 23:16:42 +01:00
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.gitignore vendored Normal file
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/target
.history
input

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Cargo.lock generated Normal file
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# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
[[package]]
name = "advent_of_code_2020"
version = "0.1.0"
dependencies = [
"aoc-runner",
"aoc-runner-derive",
]
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Cargo.toml Normal file
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[package]
name = "advent_of_code_2020"
version = "0.1.0"
authors = ["Daniel Seiller <earthnuker@gmail.com>"]
edition = "2018"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
aoc-runner = "0.3.0"
aoc-runner-derive = "0.3.0"

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src/day1.rs Normal file
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use aoc_runner_derive::{aoc,aoc_generator};
#[aoc_generator(day1)]
pub fn input_generator(input: &str) -> Vec<usize> {
input.lines().map(|l| l.trim().parse()).collect::<Result<Vec<usize>,_>>().unwrap()
}
#[aoc(day1, part1)]
pub fn solve_part1(input: &Vec<usize>) -> usize {
let mut input=input.clone();
input.sort();
for (i1,v1) in input.iter().enumerate() {
if v1>&2020 {break;}
for v2 in input.iter().skip(i1+1) {
if (v1+v2)==2020 {
return v1*v2;
}
}
}
unimplemented!();
}
#[aoc(day1, part2)]
pub fn solve_part2(input: &Vec<usize>) -> usize {
let mut input=input.clone();
input.sort();
for (i1,v1) in input.iter().enumerate() {
if v1>&2020 {break;}
for (i2,v2) in input.iter().enumerate().skip(i1+1) {
if (v1+v2)>2020 {break;}
for v3 in input.iter().skip(i2+1) {
if (v1+v2+v3)==2020 {
return v1*v2*v3;
}
}
}
}
unimplemented!();
}

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src/lib.rs Normal file
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use aoc_runner_derive::aoc_lib;
pub mod day1;
aoc_lib! { year = 2020 }

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src/main.rs Normal file
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extern crate advent_of_code_2020;
use aoc_runner_derive::aoc_main;
aoc_main! { lib = advent_of_code_2020 }