38 lines
830 B
Rust
38 lines
830 B
Rust
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use color_eyre::Result;
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use itertools::Itertools;
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pub fn solve() -> Result<()> {
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let input_data = include_str!("../../data/day_01.txt").trim();
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println!("Day 01 Part 1: {}", part_1(input_data)?);
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println!("Day 01 Part 2: {}", part_2(input_data)?);
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Ok(())
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}
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fn part_1(input: &str) -> Result<usize> {
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Ok(
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parse_measurements(input)?
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.into_iter()
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.tuple_windows()
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.filter(|(previous, next)| next > previous)
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.count(),
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)
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}
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fn part_2(input: &str) -> Result<usize> {
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Ok(
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parse_measurements(input)?
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.into_iter()
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.tuple_windows()
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.filter(|(a, b, c, d)| b + c + d > a + b + c)
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.count(),
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)
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}
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fn parse_measurements(input: &str) -> Result<Vec<i32>> {
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input
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.lines()
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.map(|line| line.parse::<i32>())
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.collect::<Result<_, _>>()
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.map_err(Into::into)
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}
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