Day 4 puzzle

Cargo.lock

@@ -9,6 +9,7 @@ dependencies = [
  "day1",
  "day2",
  "day3",
+ "day4",
 ]
 
 [[package]]
@@ -22,3 +23,7 @@ version = "0.1.0"
 [[package]]
 name = "day3"
 version = "0.1.0"
+
+[[package]]
+name = "day4"
+version = "0.1.0"

Cargo.toml

@@ -9,10 +9,12 @@ edition = "2021"
 members = [
 	"day1",
 	"day2",
-	"day3"
+	"day3",
+	"day4"
 ]
 
 [dependencies]
 day1 = { path = "./day1" }
 day2 = { path = "./day2" }
-day3 = { path = "./day3" }
+day3 = { path = "./day3" }
+day4 = { path = "./day4" }

day4/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "day4"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

day4/src/lib.rs

@@ -0,0 +1,53 @@
+use std::{fs, ops::Range};
+
+pub fn start() {
+	let input = fs::read_to_string("./day4/src/input.txt").unwrap();
+
+	let mut sum1 = 0;
+	let mut sum2 = 0;
+	input
+		.lines()
+		.map(|f| {
+			f.split(",")
+				.collect::<Vec<&str>>()
+				.iter()
+				.map(|f| {
+					f.split("-")
+						.map(|f| f.parse::<u32>().unwrap())
+						.collect::<Vec<u32>>()
+				})
+				.collect::<Vec<Vec<u32>>>()
+		})
+		.for_each(|f| {
+			let i1 = f.get(0).unwrap();
+			let i2 = f.get(1).unwrap();
+
+			let r1 = Range {
+				start: i1.get(0).unwrap().to_owned(),
+				end: i1.get(1).unwrap().to_owned(),
+			};
+			let r2 = Range {
+				start: i2.get(0).unwrap().to_owned(),
+				end: i2.get(1).unwrap().to_owned(),
+			};
+
+			if (r1.start >= r2.start && r1.end <= r2.end)
+				|| (r2.start >= r1.start && r2.end <= r1.end)
+			{
+				sum1 += 1;
+			}
+
+			if r1.start == r2.start
+				|| r1.end == r2.end
+				|| r1.contains(&r2.start)
+				|| r1.contains(&r2.end)
+				|| r2.contains(&r1.start)
+				|| r2.contains(&r1.end)
+			{
+				sum2 += 1;
+			}
+		});
+
+	println!("Part 1: {:#?}", sum1);
+	println!("Part 2: {:#?}", sum2)
+}

src/main.rs

@@ -1,9 +1,10 @@
 use day1;
 use day2;
 use day3;
-
+use day4;
 fn main() {
 	// day1::start();
     // day2::start();
-	day3::start();
+	// day3::start();
+	day4::start();
 }