
# declare a list:
nodeList = []
# to declare a node
# node = Node(param1,param2,param3,param4)

# to add a node to the stack
nodeList.push()

# to check if the stack is empty

nodeList.empty()

# to return the top-most element without removing it
nodeList.top()

# to return and remove the top-most element
nodeList.pop()
