comefrom: <awangdev>1306. Jump Game III_1.java
code: private void add(Queue<Integer> queue, int[] arr, int start) {
  
          int left = start - arr[start], right = start + arr[start];
          if (left >= 0) queue.offer(left);
          if (right < arr.length) queue.offer(right);
      }
masked: private void var_0 ( Queue < Integer > var_1 , int [ ] var_2 , int var_3 ) {
    int var_4 = var_3 - var_2 [ var_3 ] , var_5 = var_3 + var_2 [ var_3 ] ;
    if ( var_4 >= 0 ) var_1 . offer ( var_4 ) ;
    if ( var_5 < var_2 . length ) var_1 . offer ( var_5 ) ;
  }
  