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Recursion for Coding Interviews in JavaScript
The ultimate guide to recursion interviews in JavaScript. Developed by FAANG engineers. Practice with real-world interview questions and get interview-ready in just a few hours.
4.4
58 Lessons
8h
Updated 1 month ago
Join 3 million developers at
Join 3 million developers at
LEARNING OBJECTIVES
- Explain recursion fundamentals in JavaScript, including base cases and recursive cases
- Visualize recursion using stack frames to trace how calls build and unwind in memory
- Differentiate direct vs indirect recursion and implement each with JavaScript examples
- Convert iterative solutions into recursive functions by identifying loops and defining base cases
- Implement recursive solutions for numeric tasks (power, sum 1..n, modulus, GCD, Pascal, binary)
- Apply recursion to strings and arrays (palindrome, merge, reverse, count, balance, sort)
- Implement recursive algorithms on data structures (linked lists, stacks, DFS, topological sort)
Learning Roadmap
1.
Recursion Fundamentals
Recursion Fundamentals
Get familiar with recursion concepts, memory management, and practical uses in JavaScript.
2.
Iteration Vs Recursion
Iteration Vs Recursion
Unpack the core of iteration vs. recursion, converting techniques, and practical challenges.
Overview of Iterative FunctionsDifference Between Iteration and RecursionConverting Iterative Code to Recursive CodeCount Vowels in a StringChallenge 1: Compute the Square of a NumberSolution Review: Compute the Square of a NumberChallenge 2: Search the First Occurrence of a NumberSolution Review: Search the First Occurrence of a NumberChallenge 3: The nth Fibonacci NumberSolution Review: Corresponding Fibonacci NumberTest Your Knowledge 2
3.
Recursion with Numbers
Recursion with Numbers
10 Lessons
10 Lessons
Examine recursive solutions for numerical problems like powers, sums, GCD, Pascal's Triangle, and binary conversion.
4.
Recursion with Strings
Recursion with Strings
10 Lessons
10 Lessons
Break down complex ideas to handle strings recursively for manipulations, checks, and challenges.
5.
Recursion with Arrays
Recursion with Arrays
10 Lessons
10 Lessons
Solve problems in recursion with arrays, including counting, reversing, replacing, averaging, balancing, and sorting.
6.
Recursion with Data Structures
Recursion with Data Structures
9 Lessons
9 Lessons
Focus on recursion in linked lists, graphs, and stacks with practical challenges and solutions.
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Developed by MAANG Engineers
ABOUT THIS COURSE
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.
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Evan Dunbar
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Front-end Developer
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Vinay Krishnaiah
Software Developer
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