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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 append(self, data):
new_node = Node(data)
if not self.head:
self.head = new_node
new_node.next = self.head
else:
current = self.head
while current.next != self.head:
current = current.next
current.next = new_node
new_node.next = self.head

def display(self):
if not self.head:
print("List kosong")
return
current = self.head
while True:
print(current.data, end=" -> ")
current = current.next
if current == self.head:
break
print()

def delete(self, key):
if not self.head:
print("List kosong")
return

if self.head.data == key:
current = self.head
while current.next != self.head:
current = current.next
if self.head == self.head.next:
self.head = None
else:
self.head = self.head.next
current.next = self.head
return

current = self.head
prev = None
while current.next != self.head:
if current.data == key:
break
prev = current
current = current.next

if current == self.head:
print("Data tidak ditemukan")
return

prev.next = current.next

def sort(self):
if not self.head:
print("List kosong")
return

current = self.head
temp = None

while current.next != self.head:
temp = current.next
while temp != self.head:
if current.data > temp.data:
current.data, temp.data = temp.data, current.data
temp = temp.next
current = current.next

def find_min(self):
if not self.head:
print("List kosong")
return

current = self.head
min_value = current.data

while current.next != self.head:
current = current.next
if current.data < min_value:
min_value = current.data

return min_value

def find_max(self):
if not self.head:
print("List kosong")
return

current = self.head
max_value = current.data

while current.next != self.head:
current = current.next
if current.data > max_value:
max_value = current.data

return max_value

if __name__ == "__main__":
cll = CircularLinkedList()

while True:
print("nMenu:")
print("1. Tambah data")
print("2. Hapus data")
print("3. Tampil data")
print("4. Urutkan data")
print("5. Nilai minimum")
print("6. Nilai maksimum")
print("7. Keluar")

choice = int(input("Pilih opsi: "))

if choice == 1:
data = int(input("Masukkan data yang ingin ditambahkan: "))
cll.append(data)
elif choice == 2:
data = int(input("Masukkan data yang ingin dihapus: "))
cll.delete(data)
elif choice == 3:
cll.display()
elif choice == 4:
cll.sort()
elif choice == 5:
min_value = cll.find_min()
print(f"Nilai minimum: {min_value}")
elif choice == 6:
max_value = cll.find_max()
print(f"Nilai maksimum: {max_value}")
elif choice == 7:
break
else:
print("Opsi tidak valid")
     
 
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