{"id":143296,"date":"2024-09-04T10:07:31","date_gmt":"2024-09-04T04:37:31","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=143296"},"modified":"2024-09-04T10:07:31","modified_gmt":"2024-09-04T04:37:31","slug":"insertion-in-circular-doubly-linked-list-in-dsa-python","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/insertion-in-circular-doubly-linked-list-in-dsa-python\/","title":{"rendered":"Insertion in Circular Doubly Linked List in DSA Python"},"content":{"rendered":"<h3>Program 1<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\"># implementation of doubly Circular Linked list\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 CircularDoubleList:\r\n     def __init__(self):\r\n          self.start=None\r\n          self.count=0\r\n          # method for create 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              self.start.ladd=newnode\r\n              newnode.radd=self.start\r\n              temp=temp.radd\r\n              self.count=self.count+1\r\n              choice=input(\"Want to continue: \")\r\n      \r\n      # method for display    \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             print()\r\n             while(1):\r\n                 print(temp.data,end=\" \") \r\n                 temp=temp.radd\r\n                 if(temp==self.start):\r\n                     break   \r\n             print(\"\\nTotal Node is : \" ,self.count)         \r\n\r\n       # method for reverse display    \r\n     def reversedisplayList(self):\r\n          if(self.start==None):\r\n             print(\"List not found\")\r\n          else: \r\n           temp=self.start.ladd \r\n           temp1=self.start.ladd \r\n           while(1):\r\n               print(temp.data,end=\" \")\r\n               temp=temp.ladd\r\n               if(temp==temp1):\r\n                   break\r\n\r\n      # method for insert first         \r\n     def insertFirst(self):\r\n         if(self.start==None):\r\n             print(\"List not found\")\r\n         else:\r\n             last=self.start\r\n             last=last.ladd\r\n             n=int(input(\"Enter an element for insert\"))    \r\n             newnode=Node()\r\n             newnode.ladd=None\r\n             newnode.data=n\r\n             newnode.radd=None\r\n             newnode.radd=self.start\r\n             self.start=ladd=newnode\r\n             self.start=newnode\r\n             self.start.ladd=last\r\n             last.radd=self.start\r\n             self.count=self.count+1\r\n     # method for insert last      \r\n     def insertLast(self):\r\n         if(self.start==None):\r\n             print(\"List not found\")\r\n         else:\r\n             last=self.start.ladd \r\n             n=int(input(\"Enter an element\"))   \r\n             newnode=Node()\r\n             newnode.ladd=None\r\n             newnode.data=n\r\n             newnode.radd=None\r\n             last.radd=newnode\r\n             newnode.ladd=last\r\n             self.start.ladd=newnode\r\n             newnode.radd=self.start\r\n             self.count=self.count+1\r\n\r\n   \r\n       #Method for insert middle position\r\n     def insertMiddle(self):\r\n           if(self.start==None):\r\n                print(\"List not found\")\r\n           else:\r\n                n=int(input(\"Enter an element for insert at middle\"))     \r\n                newnode=Node()\r\n                newnode.ladd=None\r\n                newnode.data=n\r\n                newnode.radd=None\r\n                pos=int(input(\"Enter middle position\"))\r\n                if(pos&gt;self.count):\r\n                     print(\"Invalid position total node only: \",self.count)\r\n                else:\r\n                     i=1\r\n                     next=self.start\r\n                     while(i&lt;pos):\r\n                          prev=next\r\n                          next=next.radd\r\n                          i=i+1\r\n\r\n                     prev.radd=newnode\r\n                     newnode.ladd=prev\r\n                     newnode.radd=next\r\n                     next.ladd=newnode\r\n                     self.count=self.count+1\r\n\r\n# Main Menu\r\nmylist=CircularDoubleList()\r\nwhile(1):\r\n    print(\"------------------Circular 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 Last\")\r\n    print(\"6.Insert Middle\")\r\n    print(\"7.Delete First\")\r\n    print(\"8.Delete Last\")\r\n    print(\"9.Delete Middle\")\r\n    print(\"10.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.reversedisplayList()\r\n    elif(choice==4):\r\n        mylist.insertFirst()\r\n    elif(choice==5):\r\n        mylist.insertLast()\r\n    elif(choice==6):\r\n        mylist.insertMiddle()\r\n    else:\r\n        break<\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Program 1 # implementation of doubly Circular Linked list class Node: def __init__(self): self.ladd=None self.data=None self.radd=None class CircularDoubleList: def __init__(self): self.start=None self.count=0 # method for create list def createList(self): n=int(input(&#8220;Enter an element&#8221;)) self.start=Node() self.start.ladd=None&#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":[32278,32853,32922,32923,32973,32848,32972],"class_list":["post-143296","post","type-post","status-publish","format-standard","hentry","category-dsa-python-tutorials","tag-circular-doubly-linked-list","tag-dsa-python","tag-dsa-python-practical","tag-dsa-python-program","tag-dsa-python-program-on-insertion-in-circular-doubly-linked-list","tag-dsa-using-python","tag-insertion-in-circular-doubly-linked-list-in-dsa-python"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Insertion in Circular Doubly Linked List in DSA Python - DataFlair<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/data-flair.training\/blogs\/insertion-in-circular-doubly-linked-list-in-dsa-python\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Insertion in Circular Doubly Linked List in DSA Python - DataFlair\" \/>\n<meta property=\"og:description\" content=\"Program 1 # implementation of doubly Circular Linked list class Node: def __init__(self): self.ladd=None self.data=None self.radd=None class CircularDoubleList: def __init__(self): self.start=None self.count=0 # method for create list def createList(self): n=int(input(&quot;Enter an element&quot;)) self.start=Node() self.start.ladd=None&#046;&#046;&#046;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/data-flair.training\/blogs\/insertion-in-circular-doubly-linked-list-in-dsa-python\/\" \/>\n<meta property=\"og:site_name\" content=\"DataFlair\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/DataFlairWS\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-09-04T04:37:31+00:00\" \/>\n<meta name=\"author\" content=\"DataFlair Team\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@DataFlairWS\" \/>\n<meta name=\"twitter:site\" content=\"@DataFlairWS\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"DataFlair Team\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Insertion in Circular Doubly Linked List in DSA Python - DataFlair","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/data-flair.training\/blogs\/insertion-in-circular-doubly-linked-list-in-dsa-python\/","og_locale":"en_US","og_type":"article","og_title":"Insertion in Circular Doubly Linked List in DSA Python - DataFlair","og_description":"Program 1 # implementation of doubly Circular Linked list class Node: def __init__(self): self.ladd=None self.data=None self.radd=None class CircularDoubleList: def __init__(self): self.start=None self.count=0 # method for create list def createList(self): n=int(input(\"Enter an element\")) self.start=Node() self.start.ladd=None&#46;&#46;&#46;","og_url":"https:\/\/data-flair.training\/blogs\/insertion-in-circular-doubly-linked-list-in-dsa-python\/","og_site_name":"DataFlair","article_publisher":"https:\/\/www.facebook.com\/DataFlairWS\/","article_published_time":"2024-09-04T04:37:31+00:00","author":"DataFlair Team","twitter_card":"summary_large_image","twitter_creator":"@DataFlairWS","twitter_site":"@DataFlairWS","twitter_misc":{"Written by":"DataFlair Team","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/data-flair.training\/blogs\/insertion-in-circular-doubly-linked-list-in-dsa-python\/#article","isPartOf":{"@id":"https:\/\/data-flair.training\/blogs\/insertion-in-circular-doubly-linked-list-in-dsa-python\/"},"author":{"name":"DataFlair Team","@id":"https:\/\/data-flair.training\/blogs\/#\/schema\/person\/c187795dc82ab948373cca526df7c445"},"headline":"Insertion in Circular Doubly Linked List in DSA Python","datePublished":"2024-09-04T04:37:31+00:00","mainEntityOfPage":{"@id":"https:\/\/data-flair.training\/blogs\/insertion-in-circular-doubly-linked-list-in-dsa-python\/"},"wordCount":11,"commentCount":0,"publisher":{"@id":"https:\/\/data-flair.training\/blogs\/#organization"},"keywords":["circular doubly linked list","dsa python","dsa python practical","dsa python program","dsa python program on insertion in circular doubly linked list","dsa using python","insertion in circular doubly linked list in dsa python"],"articleSection":["DSA using Python Tutorials"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/data-flair.training\/blogs\/insertion-in-circular-doubly-linked-list-in-dsa-python\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/data-flair.training\/blogs\/insertion-in-circular-doubly-linked-list-in-dsa-python\/","url":"https:\/\/data-flair.training\/blogs\/insertion-in-circular-doubly-linked-list-in-dsa-python\/","name":"Insertion in Circular Doubly Linked List in DSA Python - DataFlair","isPartOf":{"@id":"https:\/\/data-flair.training\/blogs\/#website"},"datePublished":"2024-09-04T04:37:31+00:00","breadcrumb":{"@id":"https:\/\/data-flair.training\/blogs\/insertion-in-circular-doubly-linked-list-in-dsa-python\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/data-flair.training\/blogs\/insertion-in-circular-doubly-linked-list-in-dsa-python\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/data-flair.training\/blogs\/insertion-in-circular-doubly-linked-list-in-dsa-python\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Blog Home","item":"https:\/\/data-flair.training\/blogs\/"},{"@type":"ListItem","position":2,"name":"DSA using Python Tutorials","item":"https:\/\/data-flair.training\/blogs\/category\/dsa-python-tutorials\/"},{"@type":"ListItem","position":3,"name":"Insertion in Circular Doubly Linked List in DSA Python"}]},{"@type":"WebSite","@id":"https:\/\/data-flair.training\/blogs\/#website","url":"https:\/\/data-flair.training\/blogs\/","name":"DataFlair","description":"Learn Today. 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