alpha037 / data-structures-and-algorithms

Important data structures and algorithms implemented in Java along with solutions to AlgoExpert problems and some Leetcode problems.

Data Structures and Algorithms

Some basic implementations of important data structures and algorithms in Java, along with a few LeetCode questions. I'll keep on adding more solutions of LeetCode problems and if you want, you can add them too!
Also, I've started adding solutions to AlgoExpert problems. You can find them in the Contents section.

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Table of Contents

• Built With
• Getting Started
  • Prerequisites
• Roadmap
• Leetcode Solutions
• AlgoExpert Solutions
• Contributing
• License
• Contact

Built With

• Java 11 - Since all the data structures and algorithms are implemented with Java, so there's nothing else to be setup except that.

Getting Started

To get a local copy up and running follow these simple steps.

Prerequisites

You need to have Java 11 setup in your local machine before you can run any one of the programs. Check out the official guide from Oracle for that.

Roadmap

See the open issues for a list of proposed features (and known issues).

Contributing

Contributions are what make the open source community such an amazing place to be learn, inspire, and create. Any contributions you make are greatly appreciated. For more details, check out the contributing guidelines.

1. Fork the Project.
2. Create your Feature Branch (git checkout -b feature/AmazingFeature).
3. Commit your Changes (git commit -m 'Add some AmazingFeature').
4. Push to the Branch (git push origin feature/AmazingFeature)
5. Open a Pull Request.

License

Distributed under the MIT License. See LICENSE for more information.

Contact

Shubhranil Dutta - [email protected]

Project Link: https://github.com/alpha037/Data-Structures-and-Algorithms

data-structures-and-algorithms's Issues

Cracking the Coding Interview

A folder containing the solutions to the data structures and algorithms problems in Cracking the Coding Interview. I think it may be useful for people testing their solutions. Since there are many approaches they can just copy/paste the solutions here and compare their code's behavior. Or, they can just reference solutions from here for better accessability (desk can get cramped with such a large book).
I am currently working my way through the book and can upload solutions as I go.

Nodedepth problem solution is wrong in this project

NodeDepths problem in algoexpertsolution
ques: Need to find the depth of the tree.
below is the solution

int nodeDepth(TreeNode t, int ldepth, int rdepth) {

	if (t == null) {
		return 0;
	} else {

		ldepth = nodeDepth(t.left, ldepth, rdepth) + 1;

		rdepth = nodeDepth(t.right, ldepth, rdepth) + 1;

		if (ldepth > rdepth) {
			return ldepth;
		} else {
			return rdepth;
		}
	}
}

Algo expert questions

below link has algo expert questions.
https://github.com/das-jishu/algoexpert-data-structures-algorithms/blob/master/Questions/

Algoexpert problem statements

You have added solutions to algoexpert problems but you haven't added any questions. could you please add them? I couldn't find questions anywhere. Questions refer to problem statement of questions.

Please also upload algoexpert questions?