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_3 , int [ ] var_4 , int var_5 ) {
    int var_6 = var_5 - var_4 [ var_5 ] , var_7 = var_5 + var_4 [ var_5 ] ;
    if ( var_6 >= 0 ) var_3 . offer ( var_6 ) ;
    if ( var_7 < var_4 . length ) var_3 . offer ( var_7 ) ;
  }
  