feat(Cars): 우승자 계산

C-B-U · Sep 8, 2023 · afc00cf · afc00cf
1 parent ab75b3f
commit afc00cf
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diff --git a/src/main/java/racingcar/domain/Car.java b/src/main/java/racingcar/domain/Car.java
@@ -15,7 +15,19 @@ public void race() {
         position.move();
     }
 
+    public boolean isWinner(int maxPosition) {
+        return position.isSame(maxPosition);
+    }
+
     public String getRacingResult() {
         return String.format(OutputMessage.RACING_RESULT.toString(), name.getValue(), position.getValue());
     }
+
+    public Position getPosition() {
+        return position;
+    }
+
+    public Name getName() {
+        return name;
+    }
 }
diff --git a/src/main/java/racingcar/domain/Cars.java b/src/main/java/racingcar/domain/Cars.java
@@ -1,7 +1,9 @@
 package racingcar.domain;
 
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
+import java.util.stream.Collectors;
 
 public class Cars {
 
@@ -23,4 +25,21 @@ public String getRacingResult() {
         );
         return stringBuilder.toString();
     }
+
+    public List<Name> getWinner() {
+        int maxPosition = calculateMaxPosition();
+        return cars.stream()
+                .filter(car -> car.isWinner(maxPosition))
+                .map(Car::getName)
+                .collect(Collectors.toList());
+    }
+
+    public int calculateMaxPosition() {
+        List<Integer> positions = cars.stream()
+                .map(Car::getPosition)
+                .mapToInt(Position::getPosition)
+                .boxed()
+                .collect(Collectors.toList());
+        return Collections.max(positions);
+    }
 }