LayoffReady

Licenses

Open-source notices for third-party material used on LayoffReady.

Most explanations, problem statements, pattern guides, diagrams and tests on LayoffReady are original work. Some Java solution code was adapted from open-source projects released under permissive licences. Their notices are reproduced below, as those licences require.

Java solution code

Portions of the Java solution code are adapted from an open-source collection of LeetCode solutions (GitHub: leetcode-solutions), released under the MIT License:

text
MIT License

Copyright (c) 2024 AlgoMaster.io

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

System design references

Several system design articles draw on ideas from The System Design Primer by Donne Martin (https://github.com/donnemartin/system-design-primer), licensed under Creative Commons Attribution 4.0 International (CC BY 4.0). Our articles are rewritten and extended in our own words; each one lists the specific primer sections and other sources it used under "References".

Cheat sheet sources

The topic lists for the Git, SQL, CS fundamentals, system design concepts, OOP & LLD and placement cheat sheets, and the 20-pattern checklist, follow the free Everything You Need to Get Placed checklist by Mohammad Fraz. Only the topic names are taken from it; every explanation, example query, command and code snippet is original.

The Java syntax cheat sheet was inspired by a publicly shared Java Syntax Notes revision handout. It was rewritten from scratch, corrected and compile-tested.

The layout of the patterns cheat sheet (what it is, when to use it, common problems, key idea, how to spot it) was inspired by the DSA Interview Cheat Sheet article by Code and Debug (https://codeanddebug.in/blog/dsa-interview-cheat-sheet/). The explanations and problem selections are our own.

References and further reading

Some articles link to these resources as references. We do not copy their text; it belongs to its authors.

Libraries

  • CodeMirror 6 (the in-browser code editor, loaded from esm.sh), including the One Dark theme and the Java, SQL and Lua language modes: MIT License.
  • Mermaid (diagrams, loaded in the browser): MIT License.
  • Pygments (code highlighting at build time): BSD 2-Clause License.
  • Python-Markdown (Markdown rendering at build time): BSD 3-Clause License.
  • Assistant and Lora fonts (served by Google Fonts): SIL Open Font License 1.1.

Trademarks

LeetCode and other product names are trademarks of their respective owners. LayoffReady is an independent study resource and is not affiliated with or endorsed by them.