Removed "magic numbers" by adding generateLeftSideArray and generateRightSideArray to SnakeBot.java. Added calculateCharIndexFromCoordinates function.

src/RumbleBot.java

         super(args);
     }
 
+    //@TODO: add nextMove() logic
     protected char nextMove(View view){
-        return walk(); //@TODO: add nextMove() logic
+        return walk();
     }
 
+    //@TODO: add walk() logic
     private char walk() {
         if(moves.isEmpty()){
-            moves += ' '; //@TODO: add walk() logic
+            moves += ' ';
         }
         char nextMove = moves.charAt(0);
         moves = moves.substring(1);