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https://github.com/seanprashad/leetcode-patterns

A pattern-based approach for learning technical interview questions
https://github.com/seanprashad/leetcode-patterns

algorithms data-structures interview-prep interview-questions java leetcode leetcode-patterns study-guide

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A pattern-based approach for learning technical interview questions

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README 

        
# Leetcode Patterns [![github-pages](https://github.com/seanprashad/leetcode-patterns/actions/workflows/github-pages.yml/badge.svg)](https://github.com/seanprashad/leetcode-patterns/actions/workflows/github-pages.yml) [![run-cron](https://github.com/seanprashad/leetcode-patterns/actions/workflows/run-cron.yml/badge.svg)](https://github.com/seanprashad/leetcode-patterns/actions/workflows/run-cron.yml)



## Table of Contents



- [Background](#background)

- [Fundamentals](#fundamentals)

- [Notes](#notes)

- [Question List](#question-list)

- [Solutions](#solutions)

- [Suggestions](#suggestions)

- [Acknowledgements](#acknowledgements)



## Background



This repo is intended for any individual wanting to improve their problem

solving skills for software engineering interviews.



Problems are grouped under their respective subtopic, in order to focus on

repeatedly applying common patterns rather than randomly tackling questions.



All questions are available on [leetcode.com] with some requiring [leetcode premium].



## Fundamentals



To find the greatest amount of success when practicing, it is highly recommended

to know the methods and runtimes of the following data structures and their

operations:



- Arrays

- Maps

- Linked Lists

- Queues

- Heaps

- Stacks

- Trees

- Graphs



In addition, you should have a good grasp on common algorithms such as:



- Breadth-first search

- Depth-first search

- Binary search

- Recursion



## Notes



[This pdf] contains information for the main data structures in Java.



Other useful methods to know include [`substring()`](https://docs.oracle.com/javase/8/docs/api/java/lang/String.html#substring-int-int-), [`toCharArray()`](https://docs.oracle.com/javase/8/docs/api/java/lang/String.html#toCharArray--), [`Math.max()`](https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#max-int-int-),

[`Math.min()`](https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html#min-int-int-), and [`Arrays.fill()`](https://docs.oracle.com/javase/8/docs/api/java/util/Arrays.html#fill-int:A-int-).



## Question List



The entire question list can be found here:

https://seanprashad.com/leetcode-patterns/.



## Solutions



Solutions written in Java can be found in the [solutions] branch.



## Suggestions



Think a question should/shouldn't be included? Wish there was another feature?

Feel free to open an [issue] with your suggestion!



## Acknowledgements



This list is heavily inspired from [Grokking the Coding Interview] with

additional problems extracted from the [Blind 75 list] and this hackernoon article

on [14 patterns to ace any coding interview question].



[leetcode.com]: https://leetcode.com

[leetcode premium]: https://leetcode.com/subscribe/

[this pdf]: https://drive.google.com/open?id=1ao4ZA28zzBttDkuS6MLQI52gDs_CJZEm

[solutions]: https://github.com/SeanPrashad/leetcode-patterns/tree/solutions

[grokking the coding interview]: https://www.educative.io/courses/grokking-the-coding-interview

[issue]: https://github.com/SeanPrashad/leetcode-patterns/issues/new

[blind 75 list]: https://www.teamblind.com/article/New-Year-Gift---Curated-List-of-Top-100-LeetCode-Questions-to-Save-Your-Time-OaM1orEU?utm_source=share&utm_medium=ios_app

[14 patterns to ace any coding interview question]: https://hackernoon.com/14-patterns-to-ace-any-coding-interview-question-c5bb3357f6ed