17 Must-Know LeetCode Problems for Coding Interviews

17 Must-Know LeetCode Problems for Coding Interviews
Published 10/2026
Created by Code Solve Execute
MP4 | Video: h264, 1920x1080 | Audio: AAC, 44.1 KHz, 2 Ch
Level: All Levels | Genre: eLearning | Language: English | Duration: 18 Lectures ( 2h 49m ) | Size: 1.2 GB

Master 17 essential LeetCode problems and learn the most important coding patterns for technical interviews using Java,

What you'll learn
Solve 17 carefully selected LeetCode interview problems using Java
Understand common coding interview patterns
Apply the Two Pointer technique
Use HashMap and HashSet effectively
Solve interval and matrix problems
Understand DFS and BFS for grid problems
Build recursive solutions using Backtracking
Understand the fundamentals of Dynamic Programming
Analyze time and space complexity
Learn how to approach unfamiliar coding problems during interviews

Requirements
Basic Java programming knowledge
Basic understanding of arrays, strings and loops
Basic knowledge of Java methods and collections is recommended
No prior LeetCode experience is required

Description

Master the coding patterns behind 17 essential LeetCode problems commonly used in technical interviews.
In this course, you will solve17 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 learnhow 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 aproblem 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.

Who this course is for
Java developers preparing for coding interviews
Students preparing for technical interviews
Beginners starting their LeetCode journey
Software developers who want to improve problem-solving skills
Anyone looking for a focused set of essential coding interview problems

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