| 3.2. | ||
|---|---|---|
|
3. Variations: Headers with First and Last |  |
| 3.2. | ||
|---|---|---|
|
|
3. Variations: Headers with First and Last | |
|
|
 |
|
| 3.1. Adding a Last Pointer |  |  |  |
4. Variations: Doubly-Linked Lists |