join movement with comma

1 files changed, 3 insertions, 3 deletions

diff --git a/src/Q9/MovingRobot.java b/src/Q9/MovingRobot.java
index c063c14..2b18ad3 100644
--- a/src/Q9/MovingRobot.java
+++ b/src/Q9/MovingRobot.java
@@ -46,9 +46,9 @@ public class MovingRobot extends Robot {
   }
 
   public String printMoves() {
-    String printer = "";
-    for (Integer move : this.moves) printer += String.format("%d", move);
-    return printer;
+    ArrayList<String> printableMoves = new ArrayList<String>();
+    for (Integer move : this.moves) printableMoves.add(String.valueOf(move));
+    return String.join(",", printableMoves);
   }
 
   public void move() {