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src/card.rs

@@ -11,7 +11,12 @@ pub struct Card {
 
 impl Card {
     pub fn fight(&self, other: &Card) -> FightResult {
-        todo!()
+        match (self.damage >= other.health, other.damage >= self.health) {
+            (true, true) => FightResult::Tie,
+            (true, false) => FightResult::Win,
+            (false, true) => FightResult::Loss,
+            (false, false) => FightResult::Draw,
+        }
     }
 
     /// Give a play by play of the battle

src/main.rs

@@ -11,6 +11,10 @@ mod strings;
 
 pub enum FightResult {
     // TODO: Add variants for win, loss, tie, and draw
+    Win,
+    Loss,
+    Tie,
+    Draw,
 }
 
 fn main() {

src/shop.rs

@@ -26,10 +26,24 @@ impl Shop {
     /// this store wins, FightResult::Loss if this store loses, and a
     /// FightResult::Tie if both stores win the same number of battles.
     pub fn fight_store(&self, other: &Shop) -> FightResult {
-        todo!()
+        let zipped: i32 = self
+            .cards
+            .iter()
+            .zip(&other.cards)
+            .map(|(x, y)| x.fight(y))
+            .map(|x| match x {
+                FightResult::Win => 1,
+                FightResult::Loss => -1,
+                _ => 0,
+            })
+            .sum();
+        match zipped {
+            1.. => FightResult::Win,
+            0 => FightResult::Tie,
+            _ => FightResult::Loss,
+        }
     }
 }
-
 // Implement the Display trait for Shop so that it can be printed. Print the
 // shop's stats, including the most expensive card, the total damage, and the
 // total health.