LeetCode is one of the most popular online platforms for practicing coding skills and preparing for technical interviews. It offers hundreds of problems covering various topics, such as arrays, strings, trees, graphs, dynamic programming, and more. Solving these problems can help you improve your problem-solving abilities, learn new algorithms and data structures, and boost your confidence.
However, sometimes it can be challenging to find the optimal solution for a given problem, or to understand the logic behind a certain approach. That’s why I have created a PDF document that contains detailed solutions and explanations for 100 LeetCode problems in Java. In this blog post, I will give you an overview of the notes, the content, and the benefits of using them.
Related posts
Overview of the Notes
The PDF document is divided into 10 chapters, each covering 10 problems from a specific topic.
For each problem, I provide the following information:
- The problem statement and an example input/output
- The time and space complexity of the solution
- The code of the solution in Java, with comments and explanations
- A brief analysis of the solution, highlighting the key ideas and techniques
- Some tips and tricks to optimize the code or handle edge cases
- Some follow-up questions or variations of the problem, if applicable
The Content of the Notes
The notes cover a wide range of difficulty levels, from easy to hard. The problems are selected based on their frequency, popularity, and relevance for technical interviews. Some of the problems are:
- Two Sum
- Reverse Integer
- Palindrome Number
- Merge Two Sorted Lists
- Valid Parentheses
- Binary Tree Inorder Traversal
- Word Ladder
- Longest Substring Without Repeating Characters
- Median of Two Sorted Arrays
- Longest Palindromic Substring
- Coin Change
- Unique Paths
- Subsets
- Word Break
- Maximum Subarray
- Single Number
- and many more!
Why These Notes
These notes are designed to help you master the essential skills and concepts for coding interviews, such as:
- How to approach a problem and break it down into subproblems
- How to choose the right data structure and algorithm for a problem
- How to write clean, concise, and bug-free code in Java
- How to analyze the time and space complexity of a solution
- How to optimize the performance and memory usage of a solution
- How to handle edge cases and corner cases
- How to communicate your thought process and explain your solution
By studying these notes, you will not only learn how to solve specific problems, but also how to apply general principles and strategies to any problem. You will also gain exposure to a variety of topics and techniques that are commonly tested in coding interviews, such as:
- Sliding window
- Two pointers
- Binary search
- Recursion
- Backtracking
- Breadth-first search
- Depth-first search
- Topological sort
- Hashing
- Sorting
- Greedy
- Divide and conquer
- Dynamic programming
- Bit manipulation
- and more!
Conclusion
If you are looking for a comprehensive and easy-to-follow guide to LeetCode solutions in Java, then this PDF document is for you. It will help you prepare for your coding interviews, improve your coding skills, and ace your LeetCode challenges. Whether you are a beginner or an expert, you will find something useful and interesting in these notes.
Download from Link
To download the PDF document, please click on the link below. You will be redirected to a secure page where you can enter your email address and receive the download link. The PDF document is free of charge and you can use it for personal or educational purposes. However, please do not distribute or sell it without my permission. Thank you for your support and feedback!
Download LeetCode Solutions in Java (PDF) From here
