beginning of days 4 and 5

day4/input.txt

@@ -0,0 +1,19 @@
+7,4,9,5,11,17,23,2,0,14,21,24,10,16,13,6,15,25,12,22,18,20,8,19,3,26,1
+
+22 13 17 11  0
+ 8  2 23  4 24
+21  9 14 16  7
+ 6 10  3 18  5
+ 1 12 20 15 19
+
+ 3 15  0  2 22
+ 9 18 13 17  5
+19  8  7 25 23
+20 11 10 24  4
+14 21 16 12  6
+
+14 21 17 24  4
+10 16 15  9 19
+18  8 23 26 20
+22 11 13  6  5
+ 2  0 12  3  7

day4/rust/Cargo.toml

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

day4/rust/src/main.rs

@@ -0,0 +1,16 @@
+use std::fs;
+
+fn main() {
+    let input = fs::read_to_string("../input.txt").expect("Could not read file");
+
+    let numbers: Vec<&str> = input.split('\n').next().unwrap().split(',').collect();
+    for i in numbers.iter() {
+        println!("{}", i);
+    }
+
+    let boards: Vec<&str> = input.split("\n\n").collect();
+    println!("{}", boards.len());
+    for i in boards.iter() {
+        println!("{:?}", i);
+    }
+}

day5/input.txt

@@ -0,0 +1,10 @@
+0,9 -> 5,9
+8,0 -> 0,8
+9,4 -> 3,4
+2,2 -> 2,1
+7,0 -> 7,4
+6,4 -> 2,0
+0,9 -> 2,9
+3,4 -> 1,4
+0,0 -> 8,8
+5,5 -> 8,2

day5/rust/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "rust"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+itertools = "0.10"

day5/rust/src/main.rs

@@ -0,0 +1,34 @@
+use itertools::Itertools;
+use std::collections::HashMap;
+use std::fs;
+
+fn main() {
+    let input = fs::read_to_string("../input.txt").expect("Could not read file");
+
+    let lines = input
+        .lines()
+        .filter_map(|l| {
+            l.split(" -> ")
+                .map(|s| s.split(','))
+                .flatten()
+                .map(|i| i.parse::<i8>().unwrap())
+                .collect_tuple()
+        })
+        .collect::<Vec<(i8, i8, i8, i8)>>();
+
+    let mut points = HashMap::new();
+
+    for (x1, y1, x2, y2) in lines {
+        let dx: i8 = x2 - x1;
+        let dy: i8 = y2 - y1;
+        for x in x1..x1 + dx {
+            for y in y1..y1 + dy {
+                *points.entry((x, y)).or_insert(0) += 1;
+            }
+        }
+    }
+
+    for (key, value) in points.into_iter() {
+        println!("({}, {}), {}", key.0, key.1, value);
+    }
+}

debug.log

@@ -0,0 +1,2 @@
+[1204/174854.538:ERROR:registration_protocol_win.cc(102)] CreateFile: The system cannot find the file specified. (0x2)
+[1217/131743.085:ERROR:registration_protocol_win.cc(102)] CreateFile: The system cannot find the file specified. (0x2)