Find the Index of a Linked List Node by Value
In this lesson we'll learn how to search through a Linked List to find the index of a Node with a given value.
[00:00] The next method we're going to implement is FIND. FIND takes one argument, value, and it will return us the index of the first Node that contains that value. This time [00:20] we're going to use a while loop to find the Node we're looking for. Here, we're iterating through each of the nodes in our list. If we find the node that we're looking for, we return its index. [00:40] Otherwise, we carry on. If we get to the end of the list and we haven't found the node we're looking for, we simply return -one. Let's hop back over to the test and see how we did. We start by creating a linked list and inserting a few values. We check to see that we get the index of a value we can find, and also we return negative one if we can't find that value. [01:05] Now, we've only got one failing test.
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