Finished day1
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commit
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/target
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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 = 3
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[[package]]
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name = "aho-corasick"
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version = "0.7.18"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "1e37cfd5e7657ada45f742d6e99ca5788580b5c529dc78faf11ece6dc702656f"
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dependencies = [
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"memchr",
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]
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[[package]]
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name = "aoc2021"
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version = "0.1.0"
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dependencies = [
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"itertools",
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"lazy_static",
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"regex",
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]
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[[package]]
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name = "either"
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version = "1.6.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e78d4f1cc4ae33bbfc157ed5d5a5ef3bc29227303d595861deb238fcec4e9457"
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[[package]]
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name = "itertools"
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version = "0.10.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "69ddb889f9d0d08a67338271fa9b62996bc788c7796a5c18cf057420aaed5eaf"
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dependencies = [
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"either",
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]
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[[package]]
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name = "lazy_static"
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version = "1.4.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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name = "memchr"
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version = "2.4.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "308cc39be01b73d0d18f82a0e7b2a3df85245f84af96fdddc5d202d27e47b86a"
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[[package]]
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name = "regex"
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version = "1.5.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d07a8629359eb56f1e2fb1652bb04212c072a87ba68546a04065d525673ac461"
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dependencies = [
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"aho-corasick",
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"memchr",
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"regex-syntax",
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]
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[[package]]
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name = "regex-syntax"
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checksum = "f497285884f3fcff424ffc933e56d7cbca511def0c9831a7f9b5f6153e3cc89b"
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[package]
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name = "aoc2021"
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version = "0.1.0"
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edition = "2021"
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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[dependencies]
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itertools = "0.10.1"
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regex = "1.5.4"
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lazy_static = "1.4.0"
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File diff suppressed because it is too large
Load Diff
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use std::error::Error;
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use std::fs::File;
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use std::io::{self, BufRead};
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use std::vec::Vec;
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fn main() -> Result<(), Box<dyn Error>> {
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let file = File::open("inputs/day1.txt")?;
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let lines = io::BufReader::new(file).lines().map(|l| l.unwrap());
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let numbers: Vec<u64> = lines.map(|l| l.parse().unwrap()).collect();
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let mut last_number: Option<u64> = None;
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let mut count = 0;
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for num in numbers.iter() {
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if let Some(last_number) = last_number {
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if num > &last_number {
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count += 1;
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}
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}
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last_number = Some(*num);
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}
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println!("Answer Part1: {}", count);
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count = 0;
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last_number = None;
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for window in numbers.windows(3) {
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let num = window.iter().fold(0, |a, b| a + b);
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if let Some(last_number) = last_number {
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if num > last_number {
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count += 1;
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}
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}
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last_number = Some(num);
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}
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println!("Answer Part2: {}", count);
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Ok(())
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}
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