What is the output of the following Python code snippet?class LinkedList: def __init__(self): self.head = None def append(self, data): new_node = Node(data) if self.head is None: self.head = new_node else: current = self.head while current.next: current = current.next current.next = new_node def display(self): current = self.head while current: print(current.data, end=" ") current = current.nextll = LinkedList()ll.append(1)ll.append(2)ll.display()
Question
What is the output of the following Python code snippet?class LinkedList: def init(self): self.head = None def append(self, data): new_node = Node(data) if self.head is None: self.head = new_node else: current = self.head while current.next: current = current.next current.next = new_node def display(self): current = self.head while current: print(current.data, end=" ") current = current.nextll = LinkedList()ll.append(1)ll.append(2)ll.display()
Solution
The output of the given Python code snippet will be an error. This is because the Node class is not defined in the provided code.
The Node class is typically used in linked lists to hold the data and the reference to the next node. Without this class, the append method in the LinkedList class will not work as it tries to create a new instance of Node.
If the Node class was defined, and assuming it's defined correctly, the output of the code would be:
1 2
This is because we're appending 1 and 2 to the linked list and then displaying the linked list. The display method prints out the data in each node, separated by a space.
Similar Questions
What will be the output of the following code?class Node: def __init__(self, data=None): self.data = data self.next = Noneclass LinkedList: def __init__(self): self.head = None def print_list(self): current_node = self.head while current_node: print(current_node.data) current_node = current_node.next def insert_at_beginning(self, new_data): new_node = Node(new_data) new_node.next = self.head self.head = new_nodellist = LinkedList()llist.insert_at_beginning(3)llist.insert_at_beginning(2)llist.insert_at_beginning(1)llist.print_list()Options1 2 31 3 22 3 13 2 1
What does the following Python code snippet do?class LinkedList: def __init__(self): self.head = None def append(self, data): new_node = Node(data) if self.head is None: self.head = new_node else: current = self.head while current.next: current = current.next current.next = new_nodeDeletes the last node of the linked listInserts a new node at the beginning of the linked listInserts a new node at the end of the linked listReverses the linked list
What does the following Python code snippet accomplish?def reverse_linked_list(head): prev = None current = head while current is not None: next_node = current.next current.next = prev prev = current current = next_node head = prev return head
What does the following Python code snippet accomplish?class Node: def __init__(self, data): self.data = data self.next = Nonenode1 = Node(1)node2 = Node(2)node1.next = node2Creates two linked list nodes with data 1 and 2, respectivelyCreates a singly linked list with two nodes containing data 1 and 2, respectivelyCreates a doubly linked list with two nodes containing data 1 and 2, respectivelyRaises a syntax error
What is the output of the following code snippet?class Node: def __init__(self, value): self.data = value self.left = None self.right = Nonedef count_leaves(node): if node is None: return 0 if node.left is None and node.right is None: return 1 return count_leaves(node.left) + count_leaves(node.right)# Usage example:root = Node(1)root.left = Node(2)root.right = Node(3)root.left.left = Node(4)root.left.right = Node(5)root.right.left = Node(6)print(count_leaves(root))Options1234
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.