Node Swap
This lesson will teach you how to swap two nodes in a linked list.
We'll cover the following...
In this lesson, we will continue with our linked list implementation and focus on how to swap two different nodes in a linked list. We will give different keys corresponding to the data elements in the nodes. Now we want to swap the two nodes that contain those two keys.
Let’s go ahead and break down how we might go about solving this problem. One way to solve this is by iterating the linked list and keeping track of certain pieces of information that are going to be helpful.
Algorithm #
We can start from the first node, i.e., the head node of the linked list and keep track of both the previous and the current node.
In the above illustration, we first set the current node to the head of the linked list and the previous node to nothing because there’s no previous node to the current node. Next, we proceed through the linked list looking at the data elements and checking if the data element of the ...