HomeCoursesGrokking the Coding Interview Patterns in C#

Intermediate

85h

Updated this week

Grokking the Coding Interview Patterns in C#

The ultimate guide to coding interviews in C#, developed by FAANG engineers. Master essential patterns, tackle tough questions, and prep faster for interviews at top tech companies.

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Preparing for a coding interview can seem overwhelming, with thousands of potential questions to consider. However, with a strategic approach, your coding interview prep can be completed in just a few weeks. Instead of endlessly drilling practice problems, focus on learning coding interview patterns for more efficient preparation. This course teaches you the underlying patterns behind common coding interview questions. By mastering these essential patterns, you’ll be able to tackle any problem effectively just by analyzing the problem statement. The pattern-based approach, developed by FAANG hiring managers, prepares you for interviews at major tech companies like Apple, Google, Meta, Microsoft, and Amazon. Soon, you’ll have the skills needed to solve even the toughest questions, excel in the coding interview, and confidently advance your career. This course is available in Python, C++, Java, JavaScript, and Go, with more languages coming soon!

Preparing for a coding interview can seem overwhelming, with thousands of potential questions to consider. However, with a strat...Show More

WHAT YOU'LL LEARN

An understanding of essential patterns behind common coding interview questions—without having to drill endless problem sets

Identifying the underlying pattern of each interview question by assessing the problem statement (and learning the tricks required to solve it)

Practicing your skills in a hands-on, setup-free coding environment

Evaluating the tradeoffs between time and space complexity in different solutions efficiently

Developing a flexible conceptual framework for solving any question by connecting problem characteristics, solution techniques, and coding design patterns

An understanding of essential patterns behind common coding interview questions—without having to drill endless problem sets

Content

869 Lessons450 Quizzes450 Challenges

Getting Started

2 Lessons

Get familiar with mastering coding patterns to excel in challenging coding interviews.

Course Overview

Who Should Take This Course

Two Pointers

40 Lessons

Grasp the fundamentals of solving coding problems using the two-pointer technique efficiently.

Introduction to Two Pointers

Valid Palindrome

Solution: Valid Palindrome

3Sum

Solution: 3Sum

Remove Nth Node from End of List

Solution: Remove Nth Node from End of List

Sort Colors

Solution: Sort Colors

Reverse Words in a String

Solution: Reverse Words in a String

Valid Word Abbreviation

Solution: Valid Word Abbreviation

Strobogrammatic Number

Solution: Strobogrammatic Number

Minimum Number of Moves to Make Palindrome

Solution: Minimum Number of Moves to Make Palindrome

Next Palindrome Using Same Digits

Solution: Next Palindrome Using Same Digits

Lowest Common Ancestor of a Binary Tree III

Solution: Lowest Common Ancestor of a Binary Tree III

Count Pairs Whose Sum is Less than Target

Solution: Count Pairs Whose Sum is Less than Target

Count Subarrays With Fixed Bounds

Solution: Count Subarrays With Fixed Bounds

Get the Maximum Score

Solution: Get the Maximum Score

Find the Lexicographically Largest String From Box II

Solution: Find the Lexicographically Largest String From Box II

Create Maximum Number

Solution: Create Maximum Number

Append Characters to String to Make Subsequence

Solution: Append Characters to String to Make Subsequence

Squares of a Sorted Array

Solution: Squares of a Sorted Array

Reverse String

Solution: Reverse String

Intersection of Two Linked Lists

Solution: Intersection of Two Linked Lists

Valid Palindrome II

Two Pointers

Mock Interview

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Fast and Slow Pointers

21 Lessons

Work your way through the fast and slow pointers method to identify cycles and solve linked list problems.

Fast and Slow Pointers

Mock Interview

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Sliding Window

33 Lessons

Grasp the fundamentals of the sliding window technique for efficient data processing in arrays and strings.

Sliding Window

Mock Interview

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Intervals

18 Lessons

Map out the steps for merging and inserting intervals, intersections, employee free time, and task scheduling.

Merge Intervals

Mock Interview

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In-Place Manipulation of a Linked List

26 Lessons

Focus on efficient in-place linked list manipulations for restructuring, reversing, and swapping nodes with O(n) time and O(1) space complexities.

In-place manipulation of a linked list

Mock Interview

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Heaps

25 Lessons

Master the heaps pattern for efficient data processing and solving median, schedule, and interval problems.

Heaps

Mock Interview

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K-way merge

15 Lessons

Step through merging techniques using the K-way merge algorithm for optimized data integration.

K-way merge

Mock Interview

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Top K Elements

37 Lessons

Discover techniques to efficiently identify top k elements using heaps in varied scenarios.

10.

Modified Binary Search

34 Lessons

Master the steps to efficiently apply modified binary search in various complex scenarios.

Modified Binary Search

Mock Interview

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11.

Subsets

14 Lessons

Enhance your skills in solving subsets, permutations, and combinations problems using C#.

12.

Greedy Techniques

35 Lessons

Solve problems in optimization using greedy algorithms for efficient, real-world solutions.

13.

Backtracking

33 Lessons

Follow the process of using backtracking to solve complex problems efficiently, such as N-Queens, Word Search, and Sudoku Solver.

14.

Dynamic Programming

44 Lessons

Practice using dynamic programming to efficiently solve optimization problems by leveraging subproblem solutions.

Dynamic Programming

Mock Interview

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15.

Cyclic Sort

12 Lessons

Break down and optimize sorting and missing number problems using cyclic sort techniques.

16.

Topological Sort

20 Lessons

Discover the logic behind topological sorting, compilation order, alien dictionaries, course schedules, matrix construction, paths, and recipe dependencies.

Topological Sort

Mock Interview

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17.

Sort and Search

31 Lessons

Solve problems by organizing data through sorting and applying binary search, two-pointer, and sliding window for efficient solutions.

18.

Matrices

37 Lessons

Examine matrix operations, including traversal methods, transformations, and problem-solving in image processing and data analysis.

19.

Stacks

30 Lessons

Apply your skills to implement efficient stack-based solutions for various coding challenges.

20.

Graphs

31 Lessons

Explore various graph types, their applications, and efficient algorithms for solving problems.

Graphs

Mock Interview

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21.

Tree Depth-First Search

35 Lessons

Follow the process of solving various binary tree problems using depth-first search and traversal methods.

22.

Tree Breadth-First Search

24 Lessons

Master tree traversal techniques, utilizing breadth-first searches for optimized node exploration and connectivity.

Tree Breadth First Search

Mock Interview

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23.

Trie

30 Lessons

Step through implementing and utilizing trie structures for efficient string operations and searches.

24.

Hash Maps

40 Lessons

Get started with understanding and implementing hash maps, their design, and practical applications in coding challenges.

25.

Knowing What to Track

32 Lessons

Explore techniques for tracking data occurrences to solve complex coding problems in C#.

Knowing what to track

Mock Interview

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26.

Union Find

28 Lessons

Apply your skills to using the union-find algorithm for various graph and connectivity problems.

Union Find

Mock Interview

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27.

Custom Data Structures

32 Lessons

Deepen your knowledge of designing efficient custom data structures for complex problem-solving.

28.

Bitwise Manipulation

32 Lessons

Focus on bitwise manipulation for practical applications like cryptography, image processing, and unique element identification.

Bitwise Manipulation

Mock Interview

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29.

Math and Geometry

37 Lessons

Explore mathematical and geometric coding challenges, focusing on efficient problem-solving techniques.

Math and Geometry

Mock Interview

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30.

Challenge Yourself

40 Lessons

Test your understanding of various coding problems to improve interview readiness.

31.

Conclusion

1 Lessons

Get familiar with next steps to enhance coding interview preparation and seek support.

Where to Go from Here?

Coding Patterns

Mock Interview

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Certificate of Completion

Showcase your accomplishment by sharing your certificate of completion.

Developed by MAANG Engineers

Every Educative lesson is designed by a team of ex-MAANG software engineers and PhD computer science educators, and developed in consultation with developers and data scientists working at Meta, Google, and more. Our mission is to get you hands-on with the necessary skills to stay ahead in a constantly changing industry. No video, no fluff. Just interactive, project-based learning with personalized feedback that adapts to your goals and experience.

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Souvik Kundu

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"Your courses are simply awesome, the depth they go into and the breadth of coverage is so good that I don't have to refer to 10 different websites looking for interview topics and content."

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Software Developer

Hands-on Learning Powered by AI

See how Educative uses AI to make your learning more immersive than ever before.

Personalized Interview Prep

Skip the LeetCode grind with a custom roadmap that adapts to your goals. Hands-on practice for Coding Interviews, System Design, and more.

Mock Interviews

Test your skills in a simulated interview setting. Receive personalized feedback based on your performance. Available for Coding Interviews, System Design, and more.

AI Prompt

Build prompt engineering skills. Practice implementing AI-informed solutions.

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.

Explain with AI

Select any text within any Educative course, and get an instant explanation — without ever leaving your browser.

AI Code Mentor

AI Code Mentor helps you quickly identify errors in your code, learn from your mistakes, and nudge you in the right direction — just like a 1:1 tutor!

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Free Resources

Frequently Asked Questions

Is C# good for coding interviews?

Yes, C# is suitable for coding interviews. It offers extensive features, including various data structures, strong typing, and powerful libraries, which are useful for solving various coding problems. Its object-oriented design and extensive .NET framework support make it a good choice for demonstrating problem-solving skills and writing efficient, maintainable code in technical interviews. Its similarity with Java makes it even more popular.

How to prepare for a C# Coding interview?

To prepare for a C# coding interview, focus on mastering core concepts such as data structures (arrays, lists, dictionaries), algorithms (sorting, searching), and object-oriented programming (classes, inheritance). Practice coding problems on platforms like Educative, LeetCode, and HackerRank to apply these concepts and become familiar with specific features in C# like LINQ and async/await.

Can I use C# in the Google interview?

Yes, you can use C# in a Google interview. Google allows a range of programming languages for coding challenges, and C# is a viable option, especially if you are comfortable with its syntax and features. Make sure to demonstrate your problem-solving skills and coding proficiency properly. Study and practice Grokking Coding Interview Patterns in the C# course by Educative.

How to crack coding interviews easily?

To crack coding interviews easily, focus on mastering the basics, practicing regularly, learning common patterns, doing mock interviews, reviewing and reflecting, and communicating clearly. Educative offers Grokking Coding Interview Patterns in six languages and AI mock interviewers to help you crack the coding interviews easily.

Can I practice coding in grokking the coding interview C# course?

Yes, you can practice coding in Grokking the Coding Interview with C#. Educative offers 228 coding problems categorized by patterns to help you prepare thoroughly.

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