Excluding the temp node that points to the object C, how many references have to be changed to remove the node that contains element C?

Computer Networking: A Top-Down Approach (7th Edition)
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Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
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Excluding the temp node that points to the object C, how many references have to be changed to remove the node that contains element C?

**Question:**
Excluding the temp node that points to the object C, how many references have to be changed to remove the node that contains element C?

**Diagram Description:**
The diagram illustrates a doubly linked list with elements labeled from A to E. Each node contains three parts: `prev` (previous pointer), `next` (next pointer), and `element`.

**Structure Details:**
- The first node (A) has its `prev` pointing to `null` and `next` pointing to B.
- Node B has its `prev` pointing to A and `next` pointing to C.
- Node C has its `prev` pointing to B and `next` pointing to D.
- Node D has its `prev` pointing to C and `next` pointing to E.
- The last node (E) has its `prev` pointing to D and `next` pointing to `null`.

**Answer:**
To remove the node containing element C, the following references need to be changed:

1. Change the `next` pointer of node B to point to node D.
2. Change the `prev` pointer of node D to point to node B.

Thus, **two references** need to be changed.
Transcribed Image Text:**Question:** Excluding the temp node that points to the object C, how many references have to be changed to remove the node that contains element C? **Diagram Description:** The diagram illustrates a doubly linked list with elements labeled from A to E. Each node contains three parts: `prev` (previous pointer), `next` (next pointer), and `element`. **Structure Details:** - The first node (A) has its `prev` pointing to `null` and `next` pointing to B. - Node B has its `prev` pointing to A and `next` pointing to C. - Node C has its `prev` pointing to B and `next` pointing to D. - Node D has its `prev` pointing to C and `next` pointing to E. - The last node (E) has its `prev` pointing to D and `next` pointing to `null`. **Answer:** To remove the node containing element C, the following references need to be changed: 1. Change the `next` pointer of node B to point to node D. 2. Change the `prev` pointer of node D to point to node B. Thus, **two references** need to be changed.
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