Java Coding Interview Prep: 17 Must-Know LeetCode Problems

Master the coding patterns behind 17 essential LeetCode problems commonly used in technical interviews.

In this course, you will solve 17 carefully selected coding problems using Java, starting with fundamental techniques and gradually moving toward more advanced problem-solving patterns.

Instead of simply memorizing solutions, you will learn how to think about a problem, identify the right pattern, build an efficient solution, and analyze its time and space complexity.

Throughout the course, you will work with important interview concepts including:

• Two Pointer Technique

• HashMap & HashSet

• Greedy Algorithms

• String Manipulation

• Sorting & Intervals

• Matrix Problems

• DFS & BFS

• Backtracking

• Dynamic Programming

• Time & Space Complexity

Each problem is explained step-by-step with a problem walkthrough, approach, dry run, Java implementation, test cases, complexity analysis, and interview takeaway.

By the end of this course, you will be able to:

• Recognize common patterns in coding interview problems

• Approach unfamiliar LeetCode problems with a structured method

• Write optimized Java solutions

• Understand when to use Two Pointers, Hashing, DFS/BFS, Backtracking and Dynamic Programming

• Analyze the time and space complexity of your solutions

• Build a stronger foundation for technical coding interviews

This course is designed for Java developers, students, and software engineers who want a focused and practical introduction to the most important coding interview patterns through 17 carefully selected problems.