[3단계 - 사다리 타기] 최지수 미션 제출합니다

src/main/java/ladder/controller/LadderController.java

@@ -2,6 +2,7 @@
 
 import ladder.model.Ladder;
 import ladder.model.LadderBuilder;
+import ladder.model.LadderResult;
 import ladder.model.LinkConnector;
 import ladder.view.LadderOutputView;
 
@@ -31,13 +32,14 @@ public void run() {
         LadderBuilder ladderBuilder = new LadderBuilder(linkConnector);
         Ladder ladder = ladderBuilder.build(width, height);
 
-
         LadderOutputView ladderOutputView = new LadderOutputView();
+        LadderResult ladderResult = new LadderResult();
         List<List<Boolean>> lines = ladder.getLines();
 
         for (List<Boolean> line : lines) {
             ladderOutputView.printLine(line);
         }
 
+        ladderResult.printResult(ladder);
     }
 }

src/main/java/ladder/model/LadderResult.java

@@ -0,0 +1,36 @@
+package ladder.model;
+
+import java.util.List;
+
+public class LadderResult {
+
+    public void printResult(Ladder ladder) {
+        List<List<Boolean>> lines = ladder.getLines();
+        int width = 0;
+        if (!lines.isEmpty()) {
+            width = lines.get(0).size() + 1;
+        }
+
+        for (int startLine = 0; startLine < width; startLine++) {
+            int currentPosition = endPosition(startLine, lines);
+            System.out.println(startLine + " -> " + currentPosition);
+        }
+    }
+
+    private int endPosition(int start, List<List<Boolean>> lines) {
+        int currentPosition = start;
+        for (List<Boolean> line : lines) {
+            currentPosition = move(currentPosition, line);
+        }
+        return currentPosition;
+    }
+
+    private int move(int currentPosition, List<Boolean> line) {
+        boolean rightPosition = currentPosition < line.size() && line.get(currentPosition);
+        boolean leftPosition = currentPosition > 0 && line.get(currentPosition - 1);
+
+        if (rightPosition) return currentPosition + 1;
+        if (leftPosition) return currentPosition - 1;
+        return currentPosition;
+    }
+}

src/test/java/ladder/model/LadderResultTest.java

@@ -0,0 +1,26 @@
+package ladder.model;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+class LadderResultTest {
+
+    @Test
+    @DisplayName("사다리 위치 출력")
+    void ladderPositionCheck() {
+        // 임의로 만든 사다리
+        List<List<Boolean>> lines = new ArrayList<>();
+        lines.add(Arrays.asList(false, true));
+        lines.add(Arrays.asList(false, false));
+
+        Ladder ladder = new Ladder(lines);
+        LadderResult ladderResult = new LadderResult();
+
+        ladderResult.printResult(ladder);
+    }
+
+}