Algorithms for Coding Interviews in C++

The ultimate guide to coding interviews in C++. Developed by FAANG engineers, this course offers 50+ coding challenges, detailed solutions, and interview strategies to get you interview-ready in hours.

Intermediate

153 Lessons

15h

Certificate of Completion

AI-POWERED

Mock Interview

Explanations

AI-POWERED

Mock Interview

Explanations

This course includes

153 Playgrounds

51 Challenges

17 Quizzes

This course includes

153 Playgrounds

51 Challenges

17 Quizzes

Course Overview

With algorithms being arguably the most common theme in coding interviews, having a firm grip on them can be the difference between being hired and not. After this comprehensive course, you'll have an in-depth understanding of different algorithm types and be equipped with a simple process for approaching complexity analysis. As you progress, you’ll be exposed to the most important algorithms you're likely to encounter on an interview, work your way through over 50 interactive coding challenges, and review...Show More

Course Content

Introduction

Get familiar with essential algorithmic paradigms and interactive coding challenges in C++.

Who This Course Is For

Learning Outcomes

Algorithmic Paradigms

Discover the logic behind brute force, greedy, divide and conquer, and dynamic programming.

Introduction to Complexity Measures

Examine the complexity measures of algorithms, focusing on time and space efficiency.

Comparing Algorithms

Example: Measuring Time Complexity of a Single Loop Algorithm

Example: Time Complexity of an Algorithm With Nested Loops

Introduction to Asymptotic Analysis and Big O

Other Common Asymptotic Notations and Why Big O Trumps Them

Useful Formulae

Common Complexity Scenarios

Challenge: Big (O) of Nested Loop with Addition

Solution: Big (O) of Nested Loop with Addition

Challenge: Big (O) of Nested Loop with Subtraction

Solution: Big (O) of Nested Loop with Subtraction

Challenge: Big (O) of Nested Loop with Multiplication

Solution: Big (O) of Nested Loop with Multiplication

Challenge: Nested Loop with Multiplication (Basic)

Solution: Nested Loop with Multiplication (Basic)

Challenge: Nested Loop with Multiplication (Intermediate)

Solution: Nested Loop with Multiplication (Intermediate)

Challenge: Nested Loop with Multiplication (Advanced)

Solution: Nested Loop with Multiplication (Advanced)

Challenge: Nested Loop with Multiplication (Pro)

Solution: Nested Loop with Multiplication (Pro)

Complexity Quiz: Test your Understanding of Complexity

Sorting & Searching

Grasp the fundamentals of sorting algorithms, efficient searching techniques, and solving array-based challenges.

Graph Algorithms

Dig deeper into graph traversal, connectivity, bipartiteness, and topological sorting in C++.

Introduction to Graph Algorithms and Implementation

Challenge: Implement Breadth First Graph Traversal

Solution: Breadth First Graph Traversal

Challenge: Implement Depth First Graph Traversal

Solution: Depth First Graph Traversal

Challenge: Calculate the Number of Nodes in a Given Graph Level

Solution: Calculate the Number of Nodes in a Given Graph Level

Challenge: Print the Transpose of a Graph

Solution: Print the Transpose of a Graph

Challenge: Print all Paths Between Two Nodes

Solution: Print all Paths Between Two Nodes

Challenge: Check If Graph is Strongly Connected

Solution: Check if a Graph is Strongly Connected

Challenge: Print all Connected Components in a Graph

Solution: Print all Connected Components of a Graph

Challenge: Check if Removing Edge Creates Components in Graph

Solution: Check if Removing Given Edge Creates Components in Graph

Challenge: Check If Given Graph is Bipartite

Solution: Check If Given Graph is Bipartite

Challenge: Topological Sorting of a Graph

Solution: Topological Sorting of a Graph

Quiz on Graph Algorithms

Greedy Algorithms

23 Lessons

Focus on implementing and optimizing greedy algorithms for various problems in coding interviews.

Dynamic Programming

25 Lessons

Master dynamic programming techniques with practical examples like Fibonacci, Knapsack, Staircase, and more.

Divide and Conquer

23 Lessons

Learn how to use the divide and conquer strategy to solve algorithmic challenges efficiently.

Appendix: Auxiliary Source Code

4 Lessons

Get started with essential STL classes, linked lists, array functions, and graph data structures.

10.

Conclusion

2 Lessons

Examine the importance of efficient algorithms and explore further learning resources for technical interviews.

Course Author

Learn everything you’ll need to perform like a rockstar on your coding interviews in C++.

Ace the C++ Coding Interview

Learn everything you’ll need to prepare for your coding interviews in C++.

7 Modules

Trusted by 1.4 million developers working at companies

Anthony Walker

@_webarchitect_

Evan Dunbar

ML Engineer

Carlos Matias La Borde

Software Developer

Souvik Kundu

Front-end Developer

Vinay Krishnaiah

Software Developer

Eric Downs

Musician/Entrepeneur

Kenan Eyvazov

DevOps Engineer

Souvik Kundu

Front-end Developer

Eric Downs

Musician/Entrepeneur

Anthony Walker

@_webarchitect_

Evan Dunbar

ML Engineer

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Instant Code Feedback

Evaluate and debug your code with the click of a button. Get real-time feedback on test cases, including time and space complexity of your solutions.

AI-Powered Mock Interviews

Put your skills to the test in a simulated interview setting. Receive personalized feedback based on your performance. Available in Premium & Premium Plus plans.

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AI Code Mentor

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Frequently Asked Questions

How to prepare for a C++ coding interview

Focus on mastering data structures (arrays, linked lists, stacks, queues, trees, graphs, hash maps) and algorithms (sorting, searching, dynamic programming, greedy techniques). Practice solving problems on platforms like LeetCode, Codeforces, and HackerRank, and familiarize yourself with C++ STL. Understand time and space complexity and review common design patterns.

Is C++ good for coding interviews?

Yes, C++ is a solid choice for coding interviews. It provides a good mix of low-level control and high-level abstraction, with powerful tools like STL for fast implementations of algorithms and data structures. Its performance and memory management capabilities make it ideal for handling complex problems.

What are the most used C++ algorithms?

Common algorithms in C++ interviews include sorting algorithms (quick sort, merge sort), searching algorithms (binary search), graph algorithms (DFS, BFS, Dijkstra’s), dynamic programming (knapsack, longest common subsequence), and greedy algorithms (Huffman coding). STL algorithms like sort and lower_bound are also widely used.

Are C++ coders in demand?

Yes, C++ developers remain in high demand, especially in industries requiring performance-critical applications like gaming, finance, systems programming, and embedded systems. Their efficiency in handling large-scale, real-time applications makes them valuable skills in today’s job market.

Does Google hire C++ developers?

Yes, Google hires C++ developers for various roles, especially in systems engineering, infrastructure, and performance-critical applications. Google values C++ for its efficiency and control over hardware resources, making it essential for developing scalable, high-performance software solutions.