{"id":143269,"date":"2024-08-29T14:34:46","date_gmt":"2024-08-29T09:04:46","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=143269"},"modified":"2024-08-29T14:34:46","modified_gmt":"2024-08-29T09:04:46","slug":"create-display-and-reverse-display-in-doubly-linked-list-in-dsa-python","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/create-display-and-reverse-display-in-doubly-linked-list-in-dsa-python\/","title":{"rendered":"Create, Display and Reverse Display in Doubly Linked List in DSA Python"},"content":{"rendered":"<h3>Program 1<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\"># Implementation of Doubly Linked List\r\n\r\nclass Node:\r\n    def __init__(self):\r\n        self.ladd=None\r\n        self.data=None\r\n        self.radd=None\r\n\r\nclass DoubleLinkedList:        \r\n      def __init__(self):\r\n           self.start=None\r\n           self.count=0\r\n\r\n      # Create method of list\r\n      def createList(self):\r\n           n=int(input(\"Enter an element\"))\r\n           self.start=Node()\r\n           self.start.ladd=None\r\n           self.start.data=n\r\n           self.start.radd=None\r\n           temp=self.start\r\n           self.count=self.count+1\r\n           choice=input(\"Want to continue\")\r\n           while(choice==\"Y\" or choice==\"y\"):\r\n                n=int(input(\"Enter next element\"))\r\n                newnode=Node()\r\n                newnode.ladd=None\r\n                newnode.data=n\r\n                newnode.radd=None\r\n                temp.radd=newnode\r\n                newnode.ladd=temp\r\n                temp=temp.radd\r\n                self.count=self.count+1\r\n                choice=input(\"Want to continue\")\r\n\r\n         # Display method of list\r\n      def displayList(self):\r\n           if(self.start==None):\r\n                print(\"List not found\")\r\n           else:\r\n                temp=self.start\r\n                while(temp!=None):\r\n                     print(temp.data,end=\" \")\r\n                     temp=temp.radd\r\n                print(\"\\nTotal Node is : \",self.count)                     \r\n\r\n  \r\n        #Method for reverse display          \r\n      def reverseDisplay(self):\r\n           if(self.start==None):\r\n                print(\"List not found\")\r\n           else:\r\n                temp=self.start\r\n                while(temp.radd!=None):\r\n                     temp=temp.radd\r\n\r\n                while(temp!=None): \r\n                     print(temp.data,end=\" \")\r\n                     temp=temp.ladd\r\n                print(\"\\nTotal Node is : \",self.count)                      \r\n\r\n#Main Menu\r\nmylist=DoubleLinkedList()\r\nwhile(1):\r\n    print(\"\\n-------------------------Doubly Linked List-----------------------\")                        \r\n    print(\"1. Create\")\r\n    print(\"2. Display\")\r\n    print(\"3. Reverse Display\")\r\n    print(\"4. Insert First\")\r\n    print(\"5. Insert Middle\")\r\n    print(\"6. Insert Last\")\r\n    print(\"7. Delete First\")\r\n    print(\"8. Delete Middle\")\r\n    print(\"9. Delete Last\")\r\n    print(\"10.Serching\")\r\n    print(\"11. Exit\")\r\n    print(\"-------------------------------------------------------------------\")\r\n    choice=int(input(\"Enter your choice\"))\r\n    if(choice==1):\r\n         mylist.createList()\r\n    elif(choice==2):\r\n         mylist.displayList()\r\n    elif(choice==3):\r\n         mylist.reverseDisplay()       \r\n    else:\r\n         break\r\n<\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Program 1 # Implementation of Doubly Linked List class Node: def __init__(self): self.ladd=None self.data=None self.radd=None class DoubleLinkedList: def __init__(self): self.start=None self.count=0 # Create method of list def createList(self): n=int(input(&#8220;Enter an element&#8221;)) self.start=Node() self.start.ladd=None self.start.data=n&#46;&#46;&#46;<\/p>\n","protected":false},"author":581,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32847],"tags":[32948,32945,32946,32944,32853,32922,32923,32848,32947],"class_list":["post-143269","post","type-post","status-publish","format-standard","hentry","category-dsa-python-tutorials","tag-create-display-reverse-display-in-doubly-linked-list-in-dsa-python","tag-creation-in-doubly-linked-list-in-dsa-python","tag-display-in-doubly-linked-list-in-dsa-python","tag-doubly-linked-list-in-dsa-python","tag-dsa-python","tag-dsa-python-practical","tag-dsa-python-program","tag-dsa-using-python","tag-reverse-display-in-doubly-linked-list-in-dsa-python"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - 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