# Introduction

#

theroyakash algorithms

#### Materials for FAANG and top startup coding interview and running notes on that. Made by theroyakash.

Getting started • Freebies • theroyakash Learning Platform • License

#### Support this project on GitHub by becoming a sponsor

This project is completely free and funded by @theroyakash and private sponsors.

## What is this?

This material categorizes coding interview problems into a set of **8 patterns**. Each pattern will be a complete tool - consisting of **data structures**, **algorithms**, and **analysis techniques** - to solve a specific category of problems. The goal is to build an understanding of the *underlying pattern* so that we can apply that pattern to solve other problems.

**Complete guide and roadmap for SDE I and SDE II algorithm round.**

## Content overview

- Sliding Window Pattern, more is being added.
- Arrays and Strings (Coming soon)
- Recursion overview and recursion problems (more) coming soon
- Linked lists overview and problems
- Stacks overview and stack problems and Queues (coming soon)
- Binary Search overview and Problems (more coming soon)
- Trees overview and tree problem
- Graphs overview, graph bfs and dfs and Graph Problems,
- Heaps overview and heap problems and 2 heaps problems.
- Greedy algorithms
- Dynamic Programming
- Bit Manipulation (With C/C++) (coming soon)

## Problem Counter

The following table is meant to represent the amount of problems has a full analysis in the website. Maybe incorrectly represented upto 1-2 problems.

Problem Concepts |
Number of problems with detailed solutions |
---|---|

Linked List Problems | \(15\) |

Binary Search (Interview Problems) | \(22\) |

Tree Problems | \(26\) |

Graph Traversals, BFS, DFS and applications | \(3\) |

Graph Standard Problems | \(4\) |

Graph Interview Problems | \(8\) |

Stack Problems | \(10\) |

Heap Problems | \(7\) |

2 Heap Problems | \(2\) problem scheduled to be added |

Array Problems | \(22\) |

Array + Sliding window concept Problems | \(4\) |

Recursion Problems | \(3\), more will be added soon |

Dynamic Programming | \(11\) |

Greedy Algorithms | 2 |

Total Number of Problems with Full analysis |
\(139\) problems with FULL analysis |

## Also Coming Soon

Few more freebies coming soon - Distributed Systems Book (expected 2025 Summer).

## Other Products

See the freebies page to see more products available for free to use.

## Who am I?

I go by theroyakash on the internet. I am a computer scientist, a masters student in computer science from **Indian Institute of Technology (IIT) Madras**, with research in **high-performance algorithms**, **data structures**, **distributed systems**, and beyond. I am an upcoming software engineering intern at Amazon India. See my work searching google for theroyakash and on Github.

## Other links

- Visit my website here.
- More about me here
- My Github,
- More about me,
- Send me an email.

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