class Stack:
def __init__(self):
self.list = LinkedListSingle()
def push(self, data):
self.list.addnode(data)
return data
def peek(self):
return self.list.peek().getdata()
def pop(self):
return self.list.pop().getdata()
def isEmpty(self):
return self.list.isEmpty()
def __init__(self):
self.list = LinkedListSingle()