Udemy – 17 Must-Know LeetCode Problems for Coding 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.