用于编写删除链表的函数的Python程序

Python算法：
在Python中，会发生自动垃圾回收，因此删除链表很容易。只需要将head更改为null。

执行：

Python3

# Python3 program to delete all
# the nodes of singly linked list
  
# Node class
class Node:
  
    # Function to initialize the 
    # node object
    def __init__(self, data):
  
        # Assign data
        self.data = data
  
        # Initialize next as null  
        self.next = None  
  
  
# Constructor to initialize the 
# node object
class LinkedList:
  
    # Function to initialize head
    def __init__(self):
        self.head = None
  
    def deleteList(self):
  
        # Initialize the current node
        current = self.head
        while current:
  
            # Move next node
            prev = current.next  
  
            # Delete the current node
            del current.data
  
            # Set current equals prev node
            current = prev
  
        # In python garbage collection happens
        # therefore, only self.head = None
        # would also delete the link list 
  
    # Push function to add node in 
    # front of llist
    def push(self, new_data):
  
        # Allocate the Node &
        # Put in the data
        new_node = Node(new_data)
  
        # Make next of new Node as head
        new_node.next = self.head
  
        # Move the head to point to the 
        # new Node
        self.head = new_node
  
# Use push() to construct list
# 1-> 12-> 1-> 4-> 1
if __name__ == '__main__':
  
    llist = LinkedList()
    llist.push(1)
    llist.push(4)
    llist.push(1)
    llist.push(12)
    llist.push(1)
  
    print("Deleting linked list")
    llist.deleteList()
  
    print("Linked list deleted")
# This code is contributed by Shrikant13

输出：

Deleting linked list
Linked list deleted

时间复杂度： O(n)
辅助空间： O(1)

有关详细信息，请参阅有关编写函数以删除链接列表的完整文章！