# Challenge 1: Length of a Linked List

Find the length of the given linked list.

## We'll cover the following

## Problem Statement

Implement a function that takes a linked list `testVariable`

and returns the length of the linked list.

### Input

- A variable
`testVariable`

containing the linked list whose length will be calculated. - The head node of the linked list
`head`

.

### Output

Length of the input linked list

### Sample Input

```
testVariable => 3 -> 4 -> 7 -> 11 -> None
head => 3
```

### Sample Output

```
4
```

### Try it Yourself

Try this challenge yourself before examining the solution. Good luck!

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