Top 100 Coding Interview Courses and Q&A

Coding interviews serve as a critical component in assessing a candidate’s technical skills and problem-solving abilities in the realm of software development.

These interviews often involve solving algorithmic problems, data structure manipulation, and coding challenges within a stipulated timeframe.

Undertaking courses specifically tailored for coding interviews offers numerous advantages.

Firstly, such courses provide a structured approach to mastering essential algorithms, data structures, and problem-solving strategies commonly encountered in these interviews.

They offer practice with real-time scenarios and challenges akin to those posed in actual interviews, enhancing confidence and proficiency.

Additionally, these courses typically incorporate mock interviews, feedback sessions, and access to industry-standard coding platforms, preparing individuals to navigate the intricacies of technical assessments seamlessly.

Moreover, they often come with expert guidance, tips, and resources, enabling candidates to refine their coding skills, address weaknesses, and perform optimally in high-pressure interview situations.

Ultimately, investing time in coding interview courses equips individuals with the expertise and confidence needed to excel in competitive technical interviews and secure coveted positions in the software development domain.


Here are top 100 assorted Coding Interview Courses from Udemy with special discounted pricing


Here are 20 multiple-choice questions (MCQs) related to coding interview preparation along with their respective answers:

Question: What is the primary goal of practicing coding interview questions?

A) Learning new programming languages
B) Memorizing algorithms
C) Understanding problem-solving techniques
D) Mastering software design patterns
Answer: C) Understanding problem-solving techniques
Question: What is the purpose of timeboxing during coding interview practice?

A) Limiting the number of coding languages to study
B) Allocating specific time limits to solve coding problems
C) Using timers to measure the execution time of code
D) Working only on coding problems related to time complexities
Answer: B) Allocating specific time limits to solve coding problems
Question: Which of the following data structures uses the Last In, First Out (LIFO) principle?

A) Queue
B) Stack
C) Heap
D) Linked List
Answer: B) Stack
Question: What is the time complexity of a typical search operation in a balanced binary search tree?

A) O(log n)
B) O(n)
C) O(1)
D) O(n log n)
Answer: A) O(log n)
Question: In a coding interview, what is the significance of the “Big O” notation?

A) Measuring the size of input data
B) Describing the worst-case runtime of an algorithm
C) Indicating the smallest possible output
D) Estimating the average-case complexity of an algorithm
Answer: B) Describing the worst-case runtime of an algorithm
Question: Which sorting algorithm has the best-case time complexity of O(n log n)?

A) Bubble Sort
B) Quick Sort
C) Insertion Sort
D) Selection Sort
Answer: B) Quick Sort
Question: What is the primary advantage of using dynamic programming in problem-solving during interviews?

A) Reducing memory usage
B) Breaking down complex problems into smaller subproblems
C) Eliminating the need for recursion
D) Focusing only on brute-force algorithms
Answer: B) Breaking down complex problems into smaller subproblems
Question: What does the term “memoization” refer to in dynamic programming?

A) Optimizing memory allocation for data structures
B) Storing intermediate results of solved subproblems to avoid redundant computations
C) Writing code without comments for faster execution
D) Limiting the number of function calls
Answer: B) Storing intermediate results of solved subproblems to avoid redundant computations
Question: What role does the “Greedy Algorithm” play in problem-solving during coding interviews?

A) Ensures the optimal solution for all subproblems
B) Guarantees the maximum possible solution
C) Focuses on the best immediate choice at each step without considering future steps
D) Optimizes for the minimum possible solution
Answer: C) Focuses on the best immediate choice at each step without considering future steps
Question: Which of the following is NOT a fundamental step in approaching a coding interview problem?

A) Understand the problem
B) Jump directly to writing code
C) Identify test cases
D) Create a plan or algorithm
Answer: B) Jump directly to writing code
Question: Which data structure is typically used to implement a priority queue?

A) Array
B) Linked List
C) Stack
D) Heap
Answer: D) Heap
Question: What is the primary objective of mock coding interviews?

A) Memorizing algorithms
B) Emulating the real interview environment
C) Solving problems without time limits
D) Learning new programming languages
Answer: B) Emulating the real interview environment
Question: In a coding interview, what does “edge case” refer to?

A) A specific condition that leads to code optimization
B) An uncommon scenario or input that may cause errors
C) A situation where the code runs exceptionally fast
D) A point where two functions meet in the code
Answer: B) An uncommon scenario or input that may cause errors
Question: Which algorithmic paradigm involves solving a problem by recursively breaking it down into smaller, simpler subproblems?

A) Brute Force
B) Divide and Conquer
C) Greedy Approach
D) Dynamic Programming
Answer: B) Divide and Conquer
Question: What does the term “recursion” signify in coding interviews?

A) A programming language feature that enables loop-based iterations
B) A technique to simplify problems by dividing them into subproblems of the same type
C) A data structure used for storing function call information
D) A programming error leading to an infinite loop
Answer: B) A technique to simplify problems by dividing them into subproblems of the same type
Question: Which approach involves solving a problem exhaustively by considering every possible solution?

A) Dynamic Programming
B) Greedy Approach
C) Brute Force
D) Divide and Conquer
Answer: C) Brute Force
Question: What is the primary purpose of learning algorithms and data structures for coding interviews?

A) Memorizing programming concepts
B) Providing an edge over others in the interview process
C) Making code more complex
D) Eliminating the need for logical thinking
Answer: B) Providing an edge over others in the interview process
Question: Which of the following is NOT a recommended strategy for approaching a coding interview problem?

A) Begin writing code immediately
B) Break down the problem into smaller steps
C) Brainstorm potential solutions
D) Test and validate your code with sample inputs
Answer: A) Begin writing code immediately
Question: What is the primary objective of conducting mock coding interviews during preparation?

A) Evaluating the coding skills of others
B) Experiencing the pressure and environment of a real interview
C) Memorizing interview questions and their solutions
D) Demonstrating expertise in a specific programming language
Answer: B) Experiencing the pressure and environment of a real interview
Question: Which algorithmic approach focuses on solving optimization problems by making the best local decisions at each step?

A) Brute Force
B) Divide and Conquer
C) Greedy Approach
D) Dynamic Programming
Answer: C) Greedy Approach