Method remove

lectures/24-heaps/code/heaps-1/Heap.java:44–58

()

  }

  public T remove() throws Exception {
    if (list.isEmpty()) {
      throw new Exception("Removing from an empty heap!");
    }

    T temp = list.get(0);

    T last = list.remove(list.size() - 1);
    if (!list.isEmpty()) {
      list.set(0, last);
      downheap(0);
    }
    
    return temp;
  }
  private void downheap(int index) {
    int min = index;
    int left = left(index);