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Recursion for Coding Interviews in Java
The ultimate guide to recursion interviews with strategies developed by FAANG engineers. Practice with real-world interview questions, detailed explanations, and visualizations to prep faster.
4.3
51 Lessons
6h
Updated 1 month ago
Join 3 million developers at
Join 3 million developers at
LEARNING OBJECTIVES
- Identify base and recursive cases in Java methods to construct correct recursive solutions
- Visualize recursion memory usage by tracing the call stack and variable state during execution
- Decide when to use recursion vs iteration based on subproblems, nesting needs, and tradeoffs
- Convert iterative Java code into recursion by translating loop logic into base cases and calls
- Implement recursive solutions for number problems (power, sum to n, modulo, Fibonacci, GCD, prime, binary)
- Implement recursive solutions for string problems (reverse, remove duplicates, merge, vowels, permutations, palindrome)
- Apply recursion to arrays and data structures (array tasks, linked lists, BST insert, DFS, topological sort)
Learning Roadmap
1.
Fundamentals of Recursion
Fundamentals of Recursion
Learn how to use recursion in Java for efficient problem-solving with practical examples.
2.
Iteration to Recursion
Iteration to Recursion
Solve challenges with transforming iterative code to recursive, comparing recursion vs. iteration.
3.
Recursion with Numbers
Recursion with Numbers
11 Lessons
11 Lessons
Work your way through core recursion techniques on numbers: power, sum, modulo, Fibonacci, GCD, prime, and binary conversion.
4.
Recursion with Strings
Recursion with Strings
10 Lessons
10 Lessons
Enhance your skills in solving string problems through recursive techniques and challenges.
5.
Recursion with Arrays
Recursion with Arrays
9 Lessons
9 Lessons
Take a closer look at solving array problems using recursion in Java, including challenges.
6.
Recursion with Data Structures
Recursion with Data Structures
8 Lessons
8 Lessons
Follow recursion techniques to solve linked list problems, BST insertions, and graph traversals.
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Developed by MAANG Engineers
ABOUT THIS COURSE
If you’ve got an interview coming up and want to brush up on your knowledge, or if you’ve ever struggled with solving coding problems using recursion, you'll find this course helpful.
You’ll start with the basics of what recursion is and why it’s important before diving into what it looks like in practice. You’ll see how recursion can help you solve a variety of different math, string, and data structure problems by using interactive code playgrounds that you can execute directly in your browser. You’ll have access to detailed explanations and visualizations for each problem to help you along the way.
By the time you’re done, you’ll be able to use what you’ve learned to solve complex real-world problems and even advance more easily through your interviews at top tech companies.
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