If you’ve ever struggled with solving problems using recursion, or if you have to brush up your skills for an interview, this course is for you.

We'll start with the basics of what recursion is and why it’s important before diving into practicing solving actual questions. You’ll have access to detailed explanations and visualizations for each problem to help you along the way. 

By the time you have completed this course, you’ll be able to use all the concepts to solve complex real-world problems. We hope that through practicing recursion, you will be able to ace all recursion related questions in interviews at top tech companies.

Recursion for Coding Interviews in JavaScript

## Problem Statement
Implement a function that takes a linked list `testVariable` and returns the length of the linked list.

> Write your code in the space provided in the file `index.js`.

### Input
1. A variable `testVariable` containing the linked list whose length will be calculated.
2. The head node of the linked list `head`.

### Output
Length of the input linked list

### Sample Input
```javascript
testVariable => 4 -> 3 -> 11 -> 7 -> null
head => 4
```
### Sample Output
```
4
```

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



# Problem Statement
Implement a function that takes a linked list `testVariable` and returns the length of the linked list.

> Write your code in the space provided in the file `index.js`.

## Input
1. A variable `testVariable` containing the linked list whose length will be calculated.
2. The head node of the linked list `head`.

## Output
Length of the input linked list

## Sample Input
```javascript
testVariable => 4 -> 3 -> 11 -> 7 -> null
head => 4
```
## Sample Output
```
4
```

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



Find the length of the given linked list.

Recursion Fundamentals

Iteration Vs Recursion

Recursion with Numbers

Recursion with Strings

Recursion with Arrays

Recursion with Data Structures

Conclusion

Challenge 1: Length of a Linked List

Problem Statement

Input

Output

Sample Input

Sample Output

Try it Yourself