[CS Interview Series 5 Data Structures] Trees, Heaps, Hash - Master the Confusing Concepts

This course carefully selects only the essential Java core concepts you must know for practical work and interviews, covering everything from object-oriented programming to collections, multithreading, and modern Java all in one comprehensive guide. Beyond basic syntax, we explain advanced concepts that make the difference in interviews through diagrams and examples in an easy-to-understand way, organized with slides for quick review at a glance. If you want to systematically organize Java core concepts, start right now.

Database concepts most frequently encountered in interviews and practical work, This introductory course is organized flow- and diagram-centrically. From SQL basic syntax to normalization, transactions, indexes, sharding/partitioning, and security, It explains seemingly complex DB concepts, structurally linking them with real-world examples. Finally, an interview practice chapter is included, So you can confidently answer questions like "What is a transaction?" and "When are indexes used?".

How does the Internet work, and how do browsers fetch web pages? A core CS (computer-science) lecture, organizing network concepts along the OSI 7-layer model, to enable self-explanation of this question. Structured for intuitive understanding through diagrams and flow-centric explanations, and it organizes concepts frequently appearing in technical interviews—such as Transport Layer (TCP/UDP), IP Address, NAT, HTTPS—by linking them to actual questions.

Curated to include only operating system concepts frequently encountered in practice and interviews, this is a core CS (computer-science) lecture, easily explained and organized with a focus on diagrams. It was designed so that even those new to it can grasp the flow and quickly continue their learning. The slides themselves are structured to serve as reviewable summary notes. It's a 'foundational building lecture' that you can return to whenever your fundamentals are shaky.

This is a core CS (computer-science) lecture that selects only the computer architecture concepts frequently encountered in practice and interviews, explaining and organizing them easily with a focus on diagrams. It was designed so that even those encountering it for the first time can grasp the flow and quickly continue with subsequent learning. The slides themselves are structured to serve as reviewable summary notes. If you want to get a grasp of the computer architecture flow, start right now.

People who are always praised for their work! There might be a better company for you. Let's prepare for a foreign company transfer with me, which offers not only a good working environment and opportunities for salary increases, but also opportunities to go abroad.

How does the Internet work, and how do browsers fetch web pages? A core CS (computer-science) lecture, organizing network concepts along the OSI 7-layer model, to enable self-explanation of this question. Structured for intuitive understanding through diagrams and flow-centric explanations, and it organizes concepts frequently appearing in technical interviews—such as Transport Layer (TCP/UDP), IP Address, NAT, HTTPS—by linking them to actual questions.

Do you dread the moment of persuasion? Stop negotiating by gut feeling and emotion! With ex-Apple Business Coach Jasmine Han, 15 mins daily, in a month, you'll take negotiation control.

Database concepts most frequently encountered in interviews and practical work, This introductory course is organized flow- and diagram-centrically. From SQL basic syntax to normalization, transactions, indexes, sharding/partitioning, and security, It explains seemingly complex DB concepts, structurally linking them with real-world examples. Finally, an interview practice chapter is included, So you can confidently answer questions like "What is a transaction?" and "When are indexes used?".

This course offers an easy grasp of data structure and algorithm core concepts via visual analogies and test tools. You'll directly implement from basics to sorting and searching, internalizing them as practical skills.

This lecture reveals employment secrets to prepare you for game programmer interviews. It handpicks frequently asked interview questions for game programmers.

This course carefully selects only the essential Java core concepts you must know for practical work and interviews, covering everything from object-oriented programming to collections, multithreading, and modern Java all in one comprehensive guide. Beyond basic syntax, we explain advanced concepts that make the difference in interviews through diagrams and examples in an easy-to-understand way, organized with slides for quick review at a glance. If you want to systematically organize Java core concepts, start right now.

With the support of Golden Rabbit and Programmers, we held a special lecture on coding tests. This is a seminar on how to prepare for the coding test.

Perfect Interview English with Charm and Persuasion Job interviews aren't won by English skills alone. From self-introductions to motivation for applying, explaining strengths and weaknesses, to handling situational questions—you need strategies to answer logically and confidently. This course is based on frequently asked questions from actual global companies and foreign firms, following a learning sequence of ✔ Answer Structure Design → ✔ Key Expression Mastery → ✔ Real-world Role-play Training. Rather than simple memorization, we'll develop your ability to expand answers with your own unique stories. Intensive analysis of 30+ essential frequently asked questions Model answers & instant variation training Logical answer frameworks that interviewers love Role-plays that capture the real interview atmosphere This will be the most practical guide for those preparing for English interviews at foreign companies, global corporations, and major domestic companies.

This is an online lecture that systematically organizes pathfinding and spatial partitioning algorithms used in game production.

If you are preparing for a data analyst job or career change and were curious about hearing from someone in the field, ask a data analyst anything!

I worked at a company called Algolia in France from 2019 to 2022. I would like to share the reason why I applied to this company, the process of moving, and what I learned and my thoughts. This is not a video like "Secrets to Successful Overseas Employment" that can be applied to everyone. However, I hope that this video, which details my personal experience, will be a good hint to many people.

Listening to the interview speech can help you pass the interview with flying colors.

From documents to interviews, the A-Z of designer employment is included. We will show you in detail how to increase your chances of passing by watching the interview process of an actual applicant that you cannot see anywhere else.

Build your coding skills by implementing data structures in Java from the ground up.

For those who have chosen a career in information security/information technology and are preparing to move to large corporations/financial institutions, we will reveal our strategy for passing the exam. A current CISO who has personally recruited and recommended numerous people will share his secrets for passing the exam. He has heard from his acquaintances, security company CEOs and executives of large companies, and compiled a recruitment bible by collecting a vast amount of recruitment secret data.

✅ Out of the entire series (1) ~ (7), (4) data structure, algorithm, object-oriented, programming language ✅ CS101 series lectures - From basic computer theory to the latest practical examples - Provides a wide range of basic knowledge

Learn Python from scratch by fully utilizing ChatGPT. Rather than tedious conceptual explanations, the focus is on students directly experiencing coding and developing problem-solving skills through example problems and practical exercises. After mastering Python's basic syntax, you can build your skills by solving various problems in Level 1 and Level 2. Furthermore, you can identify and supplement your weaknesses through an Exam structured like a real test. By regularly solving problems and utilizing ChatGPT, students can have a memorable learning experience without feeling bored.

Explanations that mix multiple concepts can cause confusion. That's why I created this course with the principle that "when understanding a new concept, only previously learned concepts should be used." So in this course, only one new concept appears at each stage, and I meticulously designed a sequential structure between concepts so that no other unfamiliar concepts appear. One concept per minute, 180 concepts total. From the basics of variables and constants to understanding memory structure from a CS perspective, and even the latest syntax for asynchronous processing. For 3 hours, you'll learn 180 core concepts in the designed order.

This is a game development & algorithm course that focuses on the algorithms and principles of 2D game development from the ground up using Windows API and C++.