Template update.

2022/src/day04.rs

@@ -0,0 +1,52 @@
+use std::io;
+use std::vec::Vec;
+
+use crate::utils;
+
+struct Assignment {
+    min: u32,
+    max: u32,
+}
+
+pub fn execute() -> Result<(), io::Error> {
+    let mut subsets = 0;
+    let mut overlaps = 0;
+
+    for line in utils::read_lines("input/day04.txt")? {
+        let text = line?;
+        let inputs: Vec<_> = text.split(',').collect();
+        let ass1 = parse_assignment(inputs[0]);
+        let ass2 = parse_assignment(inputs[1]);
+
+        if (ass2.max >= ass1.max && ass2.min <= ass1.min) ||
+           (ass1.max >= ass2.max && ass1.min <= ass2.min) {
+            subsets += 1;
+        }
+
+        if (ass2.max >= ass1.min && ass2.min <= ass1.max) ||
+           (ass1.max >= ass2.min && ass1.min <= ass2.max) {
+            overlaps += 1;
+        }
+    }
+
+    utils::print_step(1, subsets);
+    utils::print_step(2, overlaps);
+    Ok(())
+}
+
+fn parse_assignment(input: &str) -> Assignment {
+    let values: Vec<_> = input.split('-').collect();
+
+    let Ok(min) = values[0].parse::<u32>() else {
+        panic!("Min value {} is non-numeric.", values[0])
+    };
+
+    let Ok(max) = values[1].parse::<u32>() else {
+        panic!("Max value {} is non-numeric.", values[1])
+    };
+
+    Assignment {
+        min: min,
+        max: max,
+    }
+}

2022/src/main.rs

@@ -2,12 +2,12 @@ use std::env;
 use std::io;
 mod utils;
 
-const LATEST: u8 = 3;
+const LATEST: u8 = 4;
 
 mod day01;
 mod day02;
 mod day03;
-// mod day04;
+mod day04;
 // mod day05;
 // mod day06;
 // mod day07;
@@ -36,7 +36,7 @@ fn main() -> io::Result<()> {
         1 => day01::execute(),
         2 => day02::execute(),
         3 => day03::execute(),
-        // 4 => day04::execute(),
+        4 => day04::execute(),
         // 5 => day05::execute(),
         // 6 => day06::execute(),
         // 7 => day07::execute(),

2022/src/template.rs

@@ -3,7 +3,7 @@ use std::io;
 use crate::utils;
 
 pub fn execute() -> Result<(), io::Error> {
-    for line in utils::read_lines("input/day03.txt")? {
+    for line in utils::read_lines("input/dayXX.txt")? {
         let text = line?;
     }