Given a singly linked list, swap kth node from beginning with kth node from end. Swapping of data is not allowed, only pointers should be changed. This requirement may be logical in many situations where the linked list data part is huge.

The one thing I think will help this project is a readme with a comprehensive index of the questions present in this repo (or even a separate file for index will do great).

Some areas where we could work -

1. Add a logo
2. Improve the language
3. Usage instructions
4. Make readme more comprehensive and friendly

Feel free to suggest any ideas or suggestions and file a PR 😃

Please add more stack questions. Let's help those in need for interview preparations 😃

To ease navigation and support more content, let's break down the useful_links.md into sub-files like articles.md, videos.md etc

A dynamic programming problem on an egg dropping puzzle.

Some files that are in dynamic programming subfolder from algorithms are not linked in index.md from same folder.

Add doctests and docstrings, refactor and pep8 formatting.

Given three strings A, B and C. Write a function that checks whether C is an interleaving of A and B. C is said to be interleaving A and B, if it contains all characters of A and B and order of all characters in individual strings is preserved.

Fix pep8 issues and add doctrings

This is a big goal and will definitely take months. But if we want this repository to be a single source for interview prep and studying about data structures and algorithms, then having a comprehensive doc about each data structure with its theory like time complexities and use cases will definitely be a great thing.

I will start working on this in order to give it some direction and momentum.

Please feel free to suggest any improvements, open issues, point my short comings or contribute 😃

and also linked to there respective file path

want to add an implementation of Newton Rapson method(root-finding technique) in python

SharpShell_Source.zip
How to check the data set

Please add more heaps questions. Let's help those in need for interview preparations 😃

Given n dices having m faces, find the number of ways to get a given sum X. X is the summation of values on each face when all the dice are thrown.

Please Add Search Techniques by creating a Search Folder. I implemented Linear and Binary Search Techniques

I would like to contribute to this repository by making searching algorithms for python in the ### algorithm subfolder ( My first contribution ).

Please add more queue questions. Let's help those in need for interview preparations 😃

There are two graph sections - one in data structures and one in algorithms. Can I merge them into one single section under data structures? Or was this somehow intentional?

Coin Change solution is based on dynamic programming approach.

Please add more binary trees questions. Let's help those in need for interview preparations 😃

The index.md file within sub-folders which lists the names of files within the sub-folder don't have links to them and some of the index.md 's don't have the list of all files within the sub folder.
For example, the following link:

https://github.com/prabhupant/python-ds/blob/master/data_structures/binary_trees/index.md
does not have a link to the file listed in it.

Can I work on this?

can i add segment_tree questions in data_structures subfolder ?

Refactor luhn algorithm by adding docstring and tests.

Please add more graph questions. Let's help those in need for interview preparations 😃

Having an index for every sub-directory will ease navigation around the repository. Here is the structure I think will do good

- Data Structures
   - array
      - index.md
   - stack
      - index.md

and so on.

Please feel free to suggest improvements anywhere you feel like and contribute 😃

As now in the repo, useful_links.md has been changed to bookmarks directory, please fix all the reference of it in readme :)

I will be adding PR shortly..I have worked on this code.

The readme will look better with a logo. We just need a minimalist and simple logo (only text) with the words python-ds.

Feel free to file a PR 😃

The string folder should be in data structure directory, not in algorithms. Feel free to file a PR 😃

I saw that in files:

data_structures/array/all_numbers_divisible.py
data_structures/array/max_consecutive_ones.py
data_structures/bst/check_if_bt_if_bst.py

There is a use of the words min and max as variables.
min and max are builtin functions of python and should not be used as variables.

Please add more graph questions. Let's help those in need for interview preparations 😃

Feel free to file a new PR containing new data structures and algorithms questions in Python :)

I will be adding a PR shortly. I have worked on the codes for this.

Please add more string questions. Let's help those in need for interview preparations 😃