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class Node:
def __init__(self, data):
self.data = data
self.next = None
class CircularLinkedList:
def __init__(self):
self.head = None
def prepend(self, data):
new_node = Node(data)
cur = self.head
new_node.next = self.head
if not self.head:
new_node.next = new_node
else:
while cur.next != self.head:
cur = cur.next
cur.next = new_node
self.head = new_node
def append(self,data):
if not self.head:
self.head = Node(data)
self.head.next = self.head
else:
new_node = Node(data)
cur = self.head
while cur.next != self.head:
cur = cur.next
cur.next = new_node
new_node.next = self.head
def print_list(self):
cur = self.head
while cur:
print(cur.data)
cur = cur.next
if cur == self.head:
break
list= CircularLinkedList()
list.append("A")
list.append("L")
list.prepend("P")
list.prepend("O")
list.print_list()
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