LeetCode 75 Daily Solutions

Link:https://leetcode.com/studyplan/leetcode-75/

A curated repository containing solutions to all 75 LeetCode problems from the LeetCode 75 challenge, implemented in Java with detailed explanations. Perfect for learning, revision, and interview preparation.

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Repository Structure

LeetCode-75/
│
├── README.md                 # This file
├── .gitignore                # Ignore .class and other unnecessary files
├── 01_TwoPointers/           # Problems solved using Two Pointers pattern
│   ├── 001_TwoSum.java
│   ├── 002_ValidPalindrome.java
│   └── ...
├── 02_String/                # Problems solved using String manipulation
│   ├── 1768_MergeStringsAlternately.java
│   └── ...
├── 03_DynamicProgramming/    # DP problems
│   └── ...
└── ...                       # Other categories/patterns

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How to Use

1. Clone the repository:

git clone https://github.com/SyedUzaiir/LeetCode-75.git

2. Compile & run a solution:

cd 02_String
javac MergeStringsAlternately.java
java MergeStringsAlternately

3. Add new solutions:

   • Follow the same folder structure based on the problem’s pattern.
   • Include detailed comments with approach, complexity, and examples.
   • Avoid pushing .class files (use .gitignore).

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Features

• Well-structured folder organization by patterns/topics.
• GitHub-ready Java files with main methods for testing.
• Detailed in-line comments for problem explanation, approach, and complexity.
• Easy to use for revision or interview prep.

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Conventions

• File Naming: [ProblemNumber]_[ProblemName].java

• Class Naming: PascalCase matching the file name.

• Comments: Each file contains:

  • Problem statement
  • Approach / Idea
  • Complexity Analysis
  • Test cases in main

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Contribution

Feel free to fork this repository and add solutions in the same format.

• Use descriptive commit messages like: "Add solution for Merge Strings Alternately (1768)"
• Keep .class files excluded via .gitignore.

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License

This repository is open-source under the MIT License.