class Queues:
def __init__(self):
self.ins = SinglyLinkedList()
def enqueue(self, data):
self.ins.adding(data)
def dequeue(self):
return self.ins.del_head()
def display(self):
return self.ins.display()
class Stacks:
def __init__(self):
self.ins = SinglyLinkedList()
def push(self, data):
self.ins.add_head(data)
def pop(self):
return self.ins.del_head()
def display(self):
return self.ins.display()
class UniversalMethod:
def __init__(self):
self.ins = SinglyLinkedList()
def add_head(self, data):
self.ins.add_head(data)
def del_head(self):
return self.ins.del_head()
def add_end(self, data):
self.ins.adding(data)
def display(self):
return self.ins.display()