From 4388234565d34d1afc6502db34a85f424fec9a91 Mon Sep 17 00:00:00 2001
From: Yigit Sever
Date: Wed, 7 Dec 2022 00:59:22 +0300
Subject: 2022, day5: part1
---
2022/day5/part1/src/main.rs | 62 +++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 62 insertions(+)
create mode 100644 2022/day5/part1/src/main.rs
(limited to '2022/day5/part1/src')
diff --git a/2022/day5/part1/src/main.rs b/2022/day5/part1/src/main.rs
new file mode 100644
index 0000000..f64fcce
--- /dev/null
+++ b/2022/day5/part1/src/main.rs
@@ -0,0 +1,62 @@
+use itertools::Itertools;
+use regex::Regex;
+use std::collections::LinkedList;
+
+fn main() {
+ let input: &str = include_str!("../../input");
+
+ let width_finder = Regex::new(r"(?m)^\s1.*(\d)\s$").unwrap();
+ let mut width = 0;
+
+ for cap in width_finder.captures_iter(input) {
+ width = str::parse(&cap[1]).unwrap();
+ }
+
+ let mut crate_builder: Vec<LinkedList<char>> = Vec::new();
+
+ for _ in 0..width {
+ crate_builder.push(LinkedList::new());
+ }
+
+ for line in input.lines() {
+ let mut idx = 0;
+ if line.contains("1") {
+ break;
+ }
+
+ for part in &line.chars().chunks(4) {
+ let crt: String = part.collect();
+ if !crt.contains("[") {
+ idx += 1;
+ } else {
+ let crate_ = crt.chars().nth(1).unwrap();
+ crate_builder[idx].push_back(crate_);
+ idx += 1;
+ }
+ }
+ }
+
+ let move_parser = Regex::new(r"^move\s(\d+)\sfrom\s(\d)\sto\s(\d)").unwrap();
+
+ for mv in input.lines().skip_while(|l| !l.contains("move")) {
+ for cap in move_parser.captures_iter(mv) {
+ let how_many = str::parse(&cap[1]).unwrap();
+ let from: usize = str::parse(&cap[2]).unwrap();
+ let to: usize = str::parse(&cap[3]).unwrap();
+
+ for _ in 0..how_many {
+ if let Some(box_) = crate_builder[from - 1].pop_front() {
+ crate_builder[to - 1].push_front(box_);
+ }
+ }
+ }
+ }
+
+ println!(
+ "{}",
+ crate_builder
+ .iter()
+ .filter_map(|s| s.front())
+ .collect::<String>()
+ );
+}
--
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