Data Structures & Algorithms (DSA) Notes

This document is a simple, clean, and watermark-free set of handwritten notes on Data Structures and Algorithms (DSA). The notes are written in easy to understand manner, making them perfect for exam preparation. The document starts with a basic introduction to data structures and algorithms, explaining ideas like what data structures are, why they are needed, and how data is stored and organized. Concepts such as abstract data types (ADT), records, files, entities, and attributes are explained in a clear and easy way. It then explains the classification of data structures, including: * Primitive and non-primitive data structures * Linear and non-linear data structures * Static and dynamic data structures All important linear data structures like arrays, linked lists, stacks, and queues are covered along with their basic operations such as traversing, insertion, deletion, searching, and merging. The notes also include non-linear data structures like trees, types of trees, graphs, and graph traversal algorithms, explained in a short and exam-focused manner. The document also covers algorithms, including: * What an algorithm is * Features of a good algorithm * Types of algorithms such as brute force, divide and conquer, and greedy algorithms * Searching algorithms like linear search and binary search * Sorting algorithms with simple explanations and examples A dedicated section explains algorithm analysis, covering: * Time and space complexity * Best case, average case, and worst case * Asymptotic analysis using Big-O, Omega, and Theta notations, with graphs and examples There is also a clear explanation of pointers in C, including pointer arithmetic, array of pointers, pointer to pointer, and structures, along with sample programs and outputs. This makes the notes very helpful for C programming and DSA subjects. At the end, the document includes "DSA interview questions and coding-based content", which is useful for college exams, quick revision, and interview preparation as well! Overall, this is a straightforward, no-watermark DSA notes PDF that helps students understand concepts quickly and revise easily, especially when time is limited.