Debug and add

DSA/Data Structures/Circular Linked List.py

@@ -0,0 +1,58 @@
+class Node:
+    def __init__(self, val):
+        self.val = val
+        self.next = None
+        self.prev = None
+
+
+class CircularLinkedList:
+    def __init__(self):
+        self.main = None
+        self.head = False
+
+    def append_(self, val):
+        if self.main is None:
+            self.main = Node(val)
+            self.main.head = True
+            self.main.prev = self.main
+            return
+        temp = self.main.prev
+        temp.next = Node(val)
+        temp.next.prev = temp
+        temp.next.next = self.main
+
+    def prepend_(self, val):
+        temp = self.main.prev
+        temp.next = Node(val)
+        temp.next.head = True
+        self.main.head = False
+        self.main = temp.next
+
+    def print_(self):
+        temp = None
+        if self.main is None:
+            print("Circular Linked List is Empty")
+            return
+        else:
+            temp = self.main
+        print("  ʌ".center(12))
+        print("| |".center(12))
+        print("V  ".center(12))
+        while temp is not None:
+            print("_" * 12)
+            print("|" + f"{temp.val}".center(10) + "|")
+            print("־" * 12)
+            print("  ʌ".center(12))
+            print("| |".center(12))
+            print("V  ".center(12))
+            temp = temp.next
+
+
+if __name__ == "__main__":
+    cll = CircularLinkedList()
+    cll.append_(1)
+    cll.append_(2)
+    cll.append_(2)
+    cll.append_(3)
+    cll.prepend_(0)
+    cll.print_()