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Master Algorithms and Java Data Structures for Interviews
130+ hours 50+ Quizzes 300+ High Frequency Questions 1000+ Visualized Illustration 20+ Templates
  • 130+ hours
  • 50+ Quizzes
  • 300+ High Frequency Questions
  • 1000+ Visualized Illustration
  • 20+ Templates

Why are algorithm courses so important

Coding interviews, which include data structures, algorithms and object-oriented design, appear in almost any type of SDE interviews, especially for entry-level developers.

Target Audience: No prior Java programming experience / Limited knowledge of computer science fundamentals

Problems of SDE interviews
IT Companies
Non-IT Companies
  • 10
    Easy
    60
    Medium
    30
    Hard

    Top IT Companies：FAANG（Facebook、Apple、Amazon、Netflix、Google）

    IT Companies：eBay、Paypal、Airbnb

  • 35
    Easy
    55
    Medium
    10
    Hard

    Non-IT Companies: Goldman Sachs, Verizon, JP Morgan

You will learn

  • Build a solid foundation in Java programming
  • Clearly understand OOD principles and learn how to apply them in your projects
  • Tackle frequently asked questions in algorithm interviews easily and successfully pass the interview at top tech companies
  • Further understand Java memory management including efficient use of character strings and sets
  • Learn more about key algorithms such as binary search, DFS, and BFS to tackle complex coding challenges
  • Master key data structures that will help you tackle kinds of challenges in interviews and practice with calm
  • Expand your aspect of knowledge, master the skills of problem-solving, and flexibly use the learned knowledge
  • Help you master algorithmic techniques that are required for big tech interviews, such as dynamic programming
  • Explore multiple solutions to algorithmic problems and understand the pros and cons of different solutions to algorithm problems
  • Learn over 20 hot problems in OOD interviews and 17 design patterns
  • Drill platform is designed to be used for the practice of OOD interview scenarios
  • Combining theory with practical content through real-world case study will deepen your memory of knowledge points

Course Highlights

Comprehensive Learning Path

Embark on a structured journey designed to take you from the basics to mastery. Our comprehensive learning path covers everything you need to excel in software development. Start with Java Basics to build a strong foundation, then advance through Data Structures and Algorithms, where you'll hone your problem-solving skills. As you progress to Advanced Algorithms, you'll tackle complex challenges, preparing you for the final stage: Object-Oriented Design (OOD). Whether you're a beginner or looking to refine your expertise, this all-in-one learning path is your one-stop solution for success

Visualization of Algorithm and Data Structure

- Complex questions are divided step by step by using visual representations until every concept is fully understood and mastered
- You can explore the key concepts of OOD through the real-world case study starting with interview questions

Formulaic Approaches to Solving Problems

- We provide formulaic approaches to solving problems.
- Develop the ability to break down complex algorithms and OOD concepts into understandable parts.
- Gain transferable problem-solving skills that allow you to tackle similar challenges independently after completing the course.

Selected Algorithm Question Bank

- There are a large collection of real interview questions as well as frequently asked and key questions of algorithm and data structure in the question bank.
- Applying a formulaic solution can improve your problem-solving speed in the interview.

  • Customized Learning, Efficient Progress

    A personalized study plan is based on the difference in student’s skills.Mastering core algorithm helps you improve quickly.

  • Design patterns

  • OOD interview Questions

Effective Communication Skills

Effective communication is essential in coding interviews, where you must clearly and logically convey your ideas while implementing solutions under time constraints. Our program offers structured guidance on how to articulate your thought process and solutions during interviews, including commonly used terms and communication patterns. This preparation will enable you to navigate interviews with clarity and confidence

Comparison between the following
Description a

I will use two pointers, and both of them will start moving from the beginning of an array, but in different cases. The faster pointer will always move one step forward, but the slow pointer will only move when their distance is greater than K. Once the distance of two pointers is K, I will record the max number between them.

Description b

I will use the Sliding Window algorithm for this question, where I will maintain a window size of K, and keep track of maximum number in the window.

Course Outline

Quickly understand key concepts and course structure to clarify your learning path
  • Binary Search
  • Linked List
  • Tree
  • Depth First Search
  • Two Pointers
  • Two Pointers
  • Two Pointers

Course Services

Regular Q&A Sessions
Mock Interviews
Comprehensive Exercises
Holistic Job Hunting Support
Resume Writing Service

  • Stay supported with our regular Q&A sessions, where mentors provide step-by-step guidance, and engage with a vibrant community for collaborative learning.

    • Ongoing Mentorship: Step-by-step answers to all your questions.
    • Interactive Group Chat: Connect with classmates and TAs via Slack.
    • Collaborative Support: Discuss and solve problems together in a dynamic learning environment.

  • Interview Prep and
    Performance Review

    • Customized Prep: Tailored learning materials, videos, and exercises based on your background and evaluation.
    • 1-on-1 Performance Review: Post-interview feedback sessions to refine your approach and boost your performance.
    • Complimentary Group Sessions: Benefit from additional small group mock interviews as part of the program.
    • Question Predictions: Receive likely interview questions tailored to the company and position you're targeting.

  • Comprehensive Exercises

    Gain hands-on practice with a full range of exercises tailored to each lecture topic, ensuring thorough interview preparation and real-world application.

    • Topic-Specific Practice: Exercises for every covered topic.
    • Varied Formats: Short answer, multiple-choice, projects, and algorithm questions.
    • Real-World Relevance: Prepare effectively for real-world challenges.

  • Accelerate your job search with personalized referrals, direct manager contacts, and expert offer negotiation guidance, leading to faster, more targeted interview opportunities.

    • Managed Job Search: Get interviews quickly through strategic referrals and direct manager connections.
    • Tailored Opportunities: Match your skills with the right roles, skipping the repetitive application process.
    • offer Expert Negotiation Support: Prepare for manager discussions and secure the best possible offer.

  • Enhance your job prospects with our complimentary resume writing service, designed to craft a standout resume that navigates ATS and impresses hiring managers.

    • Tailored Resumes: Customized to your experience and background.
    • Professional Expertise: Work with specialists to refine and perfect your resume.
    • ATS Optimization: Extracted keywords and professional formatting to ensure success through Application Tracking Systems.

Student Review

Hear From Satisfied Students

“After graduating earlier this year, I struggled to find a job and considered switching to the IT industry. Although I had some basic programming knowledge, I knew nothing about algorithms. Even when I managed to get an online assessment (OA), it was difficult to pass. That was until I enrolled in DrillInsight's algorithm course around mid-year. With the patient guidance of Zack, I gradually improved and eventually secured an offer.”
“When Zack teaches algorithm concepts, he always starts from the root. In the past, I used to memorize algorithms without truly understanding them. However, Zack helps me understand why an algorithm exists, how to use it, the various issues that might arise during its use, and the angles from which interviewers typically evaluate candidates. Under his guidance, I gradually grasped the essence of algorithms and learned how to simplify complex problems by breaking them down into fundamental types. As my knowledge expanded, I also became able to solve problems using multiple methods.” “The algorithm course covers a comprehensive range of topics. During my subsequent job search, almost all the interview questions I encountered had been covered in the course. Even when I faced variations of the questions, I was able to successfully find solutions by applying Zack's method of simplifying complex problems.”
Eric Li

Algorithm Course

“The reason I decided to purchase the course was also due to their question bank. While practicing questions on DrillInsight, I discovered many new and unique ways of categorizing problems. The questions were systematically organized, and after completing a set of questions, I often had a “lightbulb moment.” This motivated me to purchase the course and combine it with the teachers' explanations to further enhance my algorithm knowledge and prepare for interviews. After enrolling in the course, listening to the teachers' lectures and working through my customized problem sets, my knowledge base expanded significantly. During interviews, I was able to quickly identify question types and come up with reliable solutions.”
“Additionally, DrillInsight's question bank was much more comprehensive than I expected. While common problems from big tech companies can also be found on platforms like LeetCode, DrillInsight not only includes those questions but also meticulously organizes interview questions from non-IT companies, which matched the companies I applied to. In the end, I encountered either the exact questions or slight variations of them during my VOs, which helped me successfully pass the interviews.”
Wendy Xue

Algorithm Course

”I am a CS student with a solid programming foundation, but I never had a systematic learning experience with algorithms during my time in school. As a result, I faced significant challenges during job hunting after graduation, especially when it came to algorithm questions in OA and VO interviews. I could barely get through OA by relying on memorization, but when it came to the VO rounds, I couldn’t handle it at all. The variation in the questions and the breadth of the topics tested were overwhelming, and I often failed in the VO rounds. It was at that point that I started considering enrolling in an algorithm course. There are many algorithm courses available, after careful consideration, I chose DrillInsight. This decision was influenced by my previous experience purchasing their resume revision and mock interview services, which were of excellent quality and left a lasting impression on me, so I decided to try their algorithm course as well.“
”After starting DrillInsight’s algorithm course, what surprised me the most was that their instructors are all full-time teachers! They have unique insights into teaching methods, focusing not on rote memorization of algorithms but on understanding the root of the problem, guiding us to grasp the logic and scenarios behind the algorithms. This helped me truly understand the 3Ws of algorithms (what, why, when). Additionally, the instructors are also experienced software developers previously working in large companies! And beyond algorithm knowledge, they also shared a lot of interview and workplace tips. I am extremely grateful for both the course and the instructors at DrillInsight!“
Jason Wu

Algorithm Course

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