From 7b4b22391c6454d32f978f562f3d7b7ca737ea41 Mon Sep 17 00:00:00 2001 From: Christian Ulrich Date: Sun, 4 Dec 2022 15:09:10 +0100 Subject: [PATCH] add day 4, part 1 --- day04/common.rs | 67 ++++ day04/input | 1001 +++++++++++++++++++++++++++++++++++++++++++++++ day04/part1.rs | 32 ++ day04/testinput | 7 + 4 files changed, 1107 insertions(+) create mode 100644 day04/common.rs create mode 100644 day04/input create mode 100644 day04/part1.rs create mode 100644 day04/testinput diff --git a/day04/common.rs b/day04/common.rs new file mode 100644 index 0000000..98ceeb4 --- /dev/null +++ b/day04/common.rs @@ -0,0 +1,67 @@ +// Copyright 2022 Christian Ulrich +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see . + +use std::io; +use std::ops::RangeInclusive; + +pub struct Assignments {} + +#[derive(Debug)] +pub struct Assignment { + range1: RangeInclusive, + range2: RangeInclusive, +} + +impl Iterator for Assignments { + type Item = Result; + + fn next(&mut self) -> Option { + if let Some(line) = io::stdin().lines().next() { + let line = line.unwrap(); + if line.len() > 0 { + if let Some((left, right)) = line.split_once(',') { + if let (Some((s1, e1)), Some((s2, e2))) = + (left.split_once('-'), right.split_once('-')) + { + if let (Ok(s1), Ok(e1), Ok(s2), Ok(e2)) = ( + s1.parse::(), + e1.parse::(), + s2.parse::(), + e2.parse::(), + ) { + return Some(Ok(Assignment::new(s1..=e1, s2..=e2))); + } + } + } + return Some(Err("input file contains invalid line")); + } + } + None + } +} + +impl Assignment { + pub fn new(range1: RangeInclusive, range2: RangeInclusive) -> Self { + Self { + range1: range1, + range2: range2, + } + } + + pub fn has_obsolete_range(&self) -> bool { + self.range1.contains(self.range2.start()) && self.range1.contains(self.range2.end()) + || self.range2.contains(self.range1.start()) && self.range2.contains(self.range1.end()) + } +} diff --git a/day04/input b/day04/input new file mode 100644 index 0000000..1415d9e --- /dev/null +++ b/day04/input @@ -0,0 +1,1001 @@ +22-65,22-66 +91-94,63-91 +6-88,5-31 +85-86,64-86 +40-65,40-65 +25-82,24-94 +68-69,68-92 +60-91,89-92 +3-72,3-73 +44-85,84-85 +15-72,14-72 +84-92,84-92 +10-84,3-10 +32-62,31-61 +14-98,98-99 +24-78,24-61 +2-5,5-89 +58-95,58-59 +39-93,92-93 +11-82,81-82 +12-37,13-58 +53-92,52-91 +1-19,3-18 +90-91,91-98 +20-72,19-71 +91-91,1-92 +71-90,71-93 +77-94,77-94 +48-76,48-76 +48-58,48-53 +3-42,2-14 +3-4,3-94 +4-9,7-8 +14-97,77-97 +66-66,17-65 +12-99,13-98 +29-74,30-74 +30-93,29-92 +43-44,42-46 +7-9,8-81 +21-77,1-89 +85-92,86-91 +56-72,73-73 +16-75,17-42 +2-85,1-85 +97-97,13-98 +3-94,3-33 +55-91,1-99 +14-21,14-15 +1-3,2-98 +43-57,43-56 +9-95,8-10 +18-80,81-92 +19-72,19-71 +17-94,62-86 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redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see . +// +// usage: ./part1 < input + +pub mod common; + +use common::Assignments; + +fn main() -> Result<(), &'static str> { + let assignments = Assignments {}; + let mut result = 0; + for assignment in assignments { + if assignment?.has_obsolete_range() { + result += 1; + } + } + println!("{result}"); + Ok(()) +} diff --git a/day04/testinput b/day04/testinput new file mode 100644 index 0000000..a696285 --- /dev/null +++ b/day04/testinput @@ -0,0 +1,7 @@ +2-4,6-8 +2-3,4-5 +5-7,7-9 +2-8,3-7 +6-6,4-6 +2-6,4-8 +