Inserting a Node new_node = NodeDLL (item, curr, curr.get_prev () curr.set_prev (new_node) new_node.get_prev ().set_next (new_node) ▸ However, we still need to handle insertion in different cases: ▸ Case 1: an empty list head ▸ Case 2: at the beginning of the list ▸ Case 3: at the end of the list +/47= 57 head head 67 head 27 47 curr 47 curr 57

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
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Complete the code fragment for all three cases

Please write python code

 
Inserting a Node
▸ However, we still need to handle insertion in different cases:
▸ Case I: an empty list head
▸ Case 2: at the beginning of the list
head
▸ Case 3: at the end of the list
+47
new_node NodeDLL (item, curr, curr.get_prev())
curr.set_prev (new_node)
new_node.get_prev ().set_next (new_node)
head
57
67
head
27
47
curr
47
curr
57
Transcribed Image Text:Inserting a Node ▸ However, we still need to handle insertion in different cases: ▸ Case I: an empty list head ▸ Case 2: at the beginning of the list head ▸ Case 3: at the end of the list +47 new_node NodeDLL (item, curr, curr.get_prev()) curr.set_prev (new_node) new_node.get_prev ().set_next (new_node) head 57 67 head 27 47 curr 47 curr 57
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