# Apx: Techniques & Tricks

> We've used this page to compile a few famous/infamous DSA techniques (specifically to CP/coding challenges)
>
> It's not being listing as the main course in RCS.101. Due to the following reasons
>
> 1. Techniques & Tricks could be a hit-or-miss thing, also they're often just an optimisation.
> 2. In RCS our primary focus is to compile a systematic learning roadmap. While the so called "Tricks/Techniques" often being the opposite. We've specially put those here to prevent learners from being distracted (eg. learned all the tricks, while forgot the fundamentals)

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#### Linked List - Dummy Node/Dummy Head

* [**CS Library- Linked List Problems**](http://cslibrary.stanford.edu/105/LinkedListProblems.pdf)
* [**CS106B - Linked Lists**](https://web.stanford.edu/class/archive/cs/cs106b/cs106b.1224/section/section7/)
* [**Unveiling the Magic of Dummy Heads in Linked Lists: A Deep Dive**](https://lordkonadu.medium.com/unveiling-the-magic-of-dummy-heads-in-linked-lists-a-deep-dive-31462f9d4669)
* [**Linked List Variations**](https://web.archive.org/web/20190717133610/http://www.cs.uwm.edu/faculty/boyland/classes-archive/fa15.cs351/www/linked-list-variations.html)
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