Data Structures for Coding Interviews in Java

Data structures shape how efficiently software stores, accesses, and updates data. They are also one of the most common topics in technical interviews. Whether you are interviewing for a startup role or a large engineering team, choosing the right data structure during a timed problem can strongly affect your interview performance. This course gives you a structured path to building practical fluency with the Java data structures most often used in interview problems. This course draws on my experience engineering large-scale systems at Microsoft and Meta and interviewing hundreds of software engineering candidates at both companies. One issue came up repeatedly: many candidates understood the theory but struggled to identify the problem pattern behind the prompt. This course helps you build that pattern-recognition skill. You'll work through the core data structures used in modern software engineering, including arrays, linked lists, stacks, queues, trees, heaps, graphs, and hash-based structures. Along the way, you'll solve interview-style coding problems in Java, learn the patterns behind common questions, and develop a systematic approach to tackling unfamiliar problems with confidence. Many engineers use Educative to prepare for technical interviews at major technology companies. If you want to strengthen your Java fundamentals and approach data structure interview problems with more confidence, this course gives you a practical starting point.