LinkedList code in python -
__author__ = 'jarvis' class node: def __init__(self, num): self.next = none self.data = num class llist: def __init__(self, h=none): self.head = none def insert_node(self, num): node = node(num) if self.head none: self.head = node else: node.next = self.head self.head = node def print_list(self): node = self.head while not (node none): print node.data node = node.next lis = llist() lis.insert_node(10) lis.insert_node(20) lis.insert_node(30) lis.print_list() i new python. trying create linkedlist. no error shown nothing getting displayed. when trying debug. program exiting without happening. not able understand problem is.
you shouldn't setting node.next = self.head. should maintaining pointer both head , tail. i've modified code below.
class node: def __init__(self, num): self.next = none self.data = num class llist: def __init__(self, h=none): self.head = none self.tail = none def insert_node(self, num): node = node(num) if self.head none: self.head = node self.tail = self.head else: self.tail.next= node self.tail = node def print_list(self): node = self.head while not (node none): print node.data node = node.next