code: def validateStackSequences(
      self, pushed: List[int], popped: List[int]
  ) -> bool:
      pop_idx = 0
      stack = []
  
      for value in pushed:
          stack.append(value)
          while stack and stack[-1] == popped[pop_idx]:
              stack.pop()
              pop_idx += 1
      return len(stack) == 0
  
label_desc: Use image node_id 1 for calling the Solution obj's underlying member method code with example usage: obj.validateStackSequences(pushed, popped) and returns: unknown