intermediate

src/main.rs

@@ -1,3 +1,3 @@
 fn main() {
-    aoc_2018::tasks::day21::task1();
+    aoc_2018::tasks::day24::task1();
 }

src/tasks/day16.rs

@@ -266,7 +266,7 @@ struct Instruction {
 
 #[cfg(test)]
 mod test {
-    use crate::tasks::day16::{Instruction, matches_count, Op, parse, Registers};
+    use crate::tasks::day16::{matches_count, parse, Instruction, Op, Registers};
 
     #[test]
     fn example1() {

src/tasks/day24.rs

@@ -1,16 +1,18 @@
-use crate::utils;
 use std::cmp::Reverse;
 use std::collections::HashMap;
 
-pub fn task1() {
+use crate::utils;
-    let _input = "Immune System:
-    17 units each with 5390 hit points (weak to radiation, bludgeoning) with an attack that does 4507 fire damage at initiative 2
-    989 units each with 1274 hit points (immune to fire; weak to bludgeoning, slashing) with an attack that does 25 slashing damage at initiative 3
 
-Infection:
+pub fn task1() {
-    801 units each with 4706 hit points (weak to radiation) with an attack that does 116 bludgeoning damage at initiative 1
-    4485 units each with 2961 hit points (immune to radiation; weak to fire, cold) with an attack that does 12 slashing damage at initiative 4";
     let input = utils::read_file("input/day24.txt");
+
+    let remaining_units = play(&input);
+    println!("Standing units after the game: {}", remaining_units);
+    // 21107 too high
+    // 21004 too high
+}
+
+fn play(input: &str) -> i64 {
     let mut game = Game::create(&input);
 
     println!(
@@ -39,13 +41,7 @@ Infection:
     println!("{:#?}", game);
     println!("Played {} rounds", rounds_played);
 
-    println!(
+    game.groups.values().map(|it| it.units).sum::<i64>()
-        "Standing units after the game: {}",
-        game.groups.values().map(|it| it.units).sum::<i64>()
-    );
-
-    // 21107 too high
-    // 21004 too high
 }
 
 #[derive(Debug)]
@@ -81,15 +77,15 @@ impl Game {
         // lock targets ordered by effective power
         let mut all_by_power: Vec<&Group> = self.groups.values().collect();
         all_by_power.sort_unstable_by_key(|a| Reverse((a.effective_power(), a.initiative)));
-        // for group in all_by_power.iter() {
+        for group in all_by_power.iter() {
-        //     println!(
+            println!(
-        //         "{}: {} ({})",
+                "{}: {} ({})",
-        //         group.id,
+                group.id,
-        //         group.effective_power(),
+                group.effective_power(),
-        //         group.initiative
+                group.initiative
-        //     );
+            );
-        // }
+        }
-        // println!("{:?}", all_by_power);
+        println!("{:?}", all_by_power);
         for group in all_by_power.iter() {
             if let Some(t) = self
                 .groups
@@ -142,10 +138,10 @@ impl Game {
                 if let Some(enemy) = self.groups.get_mut(enemy_id) {
                     enemy.units -= dying_units;
                 }
-                // println!(
+                println!(
-                //     "{} dealt {} ({} units) damage to {}",
+                    "{} dealt {} ({} units) damage to {}",
-                //     active_id, damage, dying_units, enemy_id
+                    active_id, damage, dying_units, enemy_id
-                // );
+                );
             }
         }
 
@@ -246,3 +242,20 @@ impl Group {
         }
     }
 }
+
+#[cfg(test)]
+mod test {
+    use crate::tasks::day24::play;
+
+    #[test]
+    fn example1() {
+        let input = "Immune System:
+    17 units each with 5390 hit points (weak to radiation, bludgeoning) with an attack that does 4507 fire damage at initiative 2
+    989 units each with 1274 hit points (immune to fire; weak to bludgeoning, slashing) with an attack that does 25 slashing damage at initiative 3
+
+Infection:
+    801 units each with 4706 hit points (weak to radiation) with an attack that does 116 bludgeoning damage at initiative 1
+    4485 units each with 2961 hit points (immune to radiation; weak to fire, cold) with an attack that does 12 slashing damage at initiative 4";
+        assert_eq!(5216, play(input));
+    }
+}