10 essentials topics you can easily prepare to crack Coding interview in 2024

This article provides you with a list of all the essential topics that help programmers or developers crack any coding interviews in 2024. 10 Essentials topics you can easily prepare to crack Coding interviews in 2024

What topics you must learn for coding interviews are mentioned there by the interviewers.

It provides resources to learn them easily and crack any interviews without doubts or nervousness.

10 Essentials topics you can prepare to crack Coding interviews in 2024

Let’s start to know about 10 Essentials topics you can prepare to crack Coding interviews in 2024 in this article.

Description of how to crack any coding interviews in 2024:-

Learn little more about 10 essentials topics you can easily prepare to crack Coding interviews in 2024.

Hello guys, as all of you know, job interviews for programming are not easy and it’s even more difficult to crack any coding programming interview in 2024.

It is difficult to crack any coding interview in tech companies like Google, Microsoft, Amazon, etc. But you can crack easily if you still carefully plan and prepare the essential topics that help to crack most topics like data structure and algorithm, system design, multithreading and concurrency, SQL and databases design, OOP, concepts of Linux, computer networks, and of course skills of problem-solving skills.

Being an article writer on many topics related to programming, I often receive queries about how to crack any coding interviews in 2024 because the demand for programmers has limits and all want to go to programming sectors.

It is difficult to get a job in a high-demand tech company because many are in line for jobs in the programming sectors after all, many are there with high skills and lots of experience so, it is very challenging for you to be at the top.

See also  Top 10 best trending Programming languages in 2024

This list will help you to start your preparation for any tech company like Google, Amazon, or Microsoft.

10 Essentials topics you can prepare to crack Coding interviews in 2024:-

If you want to crack any tech company interview, you are most likely to start from smaller firms, startups, and investment banks to gain more knowledge about programming or tech sectors.  

I am not pretty sure that this article help you a lot to crack any coding interviews in 2024 but I will share essential skills or topics that are required to pass all coding interviews.

It is also called core programming skills and it is expected from every software developer and for those who want to be a software developer to know about it.   

Preparing for coding interviews can be challenging, but focusing on essential topics can significantly improve your chances of success. Here are ten key topics to prepare for coding interviews in 2024:

->Data Structures

Understanding fundamental data structures is crucial as they are the building blocks of most coding problems.

  • Arrays
  • Linked Lists
  • Stacks
  • Queues
  • Hash Tables (HashMaps)
  • Heaps/Priority Queues
  • Trees (Binary Trees, Binary Search Trees)
  • Graphs (Adjacency List, Adjacency Matrix)
  • Tries


Proficiency in various algorithms is essential for solving complex problems efficiently.

  • Sorting Algorithms (Quick Sort, Merge Sort, Bubble Sort, etc.)
  • Searching Algorithms (Binary Search, Linear Search)
  • Dynamic Programming (Memoization, Tabulation)
  • Greedy Algorithms
  • Backtracking
  • Divide and Conquer
  • Graph Algorithms (DFS, BFS, Dijkstra’s, Kruskal’s, Prim’s)

->Problem-Solving Patterns

Recognizing patterns in problems can help you devise efficient solutions quickly.

  • Two Pointers Technique
  • Sliding Window Technique
  • Merge Intervals
  • Fast and Slow Pointers
  • Top K Elements
  • Subsets/Permutations
  • In-place Reversal of a Linked List

->System Design Basics

For senior or full-stack positions, understanding system design is crucial.

  • Scalability Concepts
  • Load Balancing
  • Caching Mechanisms
  • Database Design (Normalization, Indexing)
  • APIs and Microservices
  • Message Queues
  • CAP Theorem
  • Consistency and Partition Tolerance

->Big O Notation and Complexity Analysis

Analyzing the efficiency of algorithms is critical for writing optimal code.

  • Time Complexity
  • Space Complexity
  • Best, Worst, and Average Case Analysis
  • Trade-offs between different algorithms

->Object-Oriented Programming (OOP) Concepts

Understanding OOP is important for writing clean and reusable code.

  • Classes and Objects
  • Inheritance and Polymorphism
  • Encapsulation and Abstraction
  • Design Patterns (Singleton, Factory, Observer, etc.)

->Concurrency and Multithreading

Knowledge of concurrent programming is valuable, especially for performance-critical applications.

  • Threads and Processes
  • Locks, Semaphores, and Mutexes
  • Deadlock and Race Conditions
  • Asynchronous Programming
  • Parallelism

->Coding Practices

Familiarity with best coding practices can make your code more readable and maintainable.

  • Code Readability and Clarity
  • Refactoring Techniques
  • Writing Testable Code
  • Unit Testing and Test-Driven Development (TDD)
  • Version Control with Git


Understanding database management systems is crucial for handling data-driven applications.

  • SQL and NoSQL Databases
  • ACID Properties
  • Transactions
  • Joins and Indexing
  • ORM (Object-Relational Mapping)

->Domain-Specific Knowledge

For specialized roles, having domain-specific knowledge can give you an edge.

  • Web Development (Frontend and Backend)
  • Mobile App Development
  • Data Science and Machine Learning
  • Cloud Computing and DevOps
  • Cybersecurity Basics

Here’s a comprehensive guide to help you prepare and succeed in coding interviews:-

Cracking a coding interview in 2024 involves a combination of technical preparation, strategic planning, and soft skills.

Here’s a comprehensive guide to help you prepare and succeed in coding interviews:

Step 1: Understand the Interview Process

  1. Research the Company
    • Know the company’s interview format, the types of questions they ask, and their technical stack.
    • Read reviews on sites like Glassdoor or talk to current employees if possible.
  2. Interview Stages
    • Typically, the process includes an initial phone screen, one or more technical interviews, and a final interview that may include system design or behavioral questions.

Step 2: Master the Fundamentals

  1. Data Structures and Algorithms
    • Focus on arrays, linked lists, stacks, queues, hash tables, trees, graphs, and heaps.
    • Learn sorting and searching algorithms, dynamic programming, backtracking, and graph traversal techniques.
  2. Big O Notation
    • Understand time and space complexity and be able to analyze the efficiency of your solutions.

Step 3: Practice Coding Problems

  1. Online Platforms
    • Use platforms like LeetCode, HackerRank, CodeSignal, and GeeksforGeeks to practice problems of varying difficulty.
    • Aim to solve a mix of easy, medium, and hard problems.
  2. Problem-Solving Techniques
    • Get familiar with common patterns like two-pointers, sliding windows, divide and conquer, and dynamic programming.

Step 4: Develop a Study Plan

  1. Daily Practice
    • Allocate consistent daily practice time. Start with 1-2 hours and gradually increase as the interview date approaches.
  2. Weekly Goals
    • Set weekly goals, such as solving a certain number of problems or mastering specific topics.
  3. Mock Interviews
    • Conduct mock interviews with friends or use platforms like Pramp or Interviewing.io to simulate real interview conditions.

Step 5: Learn System Design

  1. Basic Concepts
    • Understand scalability, load balancing, caching, databases (SQL and NoSQL), and system components (e.g., servers, and clients).
  2. Design Patterns
    • Learn common design patterns and how they apply to system design problems.
  3. Practice Design Problems
    • Practice designing systems like URL shorteners, social media platforms, or e-commerce websites.

Step 6: Refine Coding Skills

  1. Language Proficiency
    • Be proficient in at least one programming language. Python, Java, C++, and JavaScript are commonly used in interviews.
  2. Clean Code
    • Write readable, maintainable, and well-documented code. Follow best practices and coding standards.
  3. Debugging and Testing
    • Develop strong debugging skills and practice writing unit tests.

Step 7: Prepare for Behavioral Questions

  1. STAR Method
    • Use the STAR (Situation, Task, Action, Result) method to structure your answers.
  2. Common Questions
    • Prepare answers for common questions like “Tell me about yourself,” “Describe a challenge you faced,” and “Why do you want to work here?”
  3. Company Culture
    • Understand the company’s values and culture to align your responses with their expectations.

Step 8: Review and Reflect

  1. Post-Practice Review
    • After solving a problem, review your solution and consider alternate approaches.
    • Reflect on your performance in mock interviews and identify areas for improvement.
  2. Stay Updated
    • Keep up with the latest trends in technology and programming.

Step 9: Day of the Interview

  1. Preparation
    • Ensure you have a quiet, comfortable space for the interview.
    • Have your resume, a notepad, and a pen ready.
  2. Mental and Physical Readiness
    • Get a good night’s sleep before the interview day.
    • Stay hydrated and eat well.
  3. Stay Calm and Confident
    • Approach each problem methodically. Clarify any doubts with the interviewer before diving into coding.
    • Think out loud to demonstrate your thought process.

Step 10: Post-Interview Follow-Up

  1. Thank You Note
    • Send a thank-you email to express your appreciation for the opportunity.
  2. Reflect and Learn
    • Reflect on the interview, noting what went well and what could be improved.
    • Use feedback to guide your further preparation.

Cracking a coding interview in 2024 requires thorough preparation in data structures and algorithms, system design, coding practices, and soft skills. Practice consistently, simulate real interview conditions with mock interviews, and stay confident and calm during the actual interview. With diligent preparation and a strategic approach, you can significantly improve your chances of coding success.https://in.indeed.com/career-advice/interviewing/how-to-crack-coding-interview.


To crack any coding interviews in 2024, it is essential to have a strong grasp of data structures, algorithms, problem-solving patterns, and system design. Additionally, understanding complexity analysis, OOP concepts, concurrency, coding practices, databases, and domain-specific knowledge can significantly enhance your preparation. Practice solving problems on platforms like LeetCode, HackerRank, and CodeSignal, and engage in mock interviews to improve your skills and confidence.

That’s why I suggest you aim higher because if you don’t get the job according to your expectations at least you still have the choice to get a job that is desirable by many programmers in your comfort zone.

Another thing to note is that different interviews need different skills. If you want to get a job in Python programming interviews then you also have to know about what is Python programming and also the framework of Python like Django and Flask.

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