Method Peek

flatten_nested_list_iterator_341/solution.go:80–86

()

}

func (s *Stack) Peek() *ListIndex {
	if len(s.items) <= 0 {
		return nil
	}

	return s.items[len(s.items)-1]
}

func (s *Stack) IsEmpty() bool {
	return len(s.items) == 0