A data structure is a specialized format for organizing, processing, retrieving, and storing data. There are several basic and advanced types of data structures, all designed to arrange data to suit a specific purpose. Data structures make it easy for users to access and work with the data they nee...
Introduction to Data Structures & Algorithms
Course Introduction
This course is designed for placement preparation and will mainly cover data
structures and algorithms using C and C++. Even if you do not know C++, you
will still be able to follow along easily. The notes will be made available as a
PDF in the description below.
Data Structures and Algorithms
Data structures are used to arrange data in main memory for efficient usage
while algorithms are a sequence of steps to solve a given problem. In this
course, we will cover arrays, linked lists, and graphs as examples of data
structures and dive into solving problems using different algorithms.
Programming Languages
C and C++ will be the primary languages used in this course but Java can also
be used to implement the algorithms. I do not recommend Python or
JavaScript for beginners but rather suggest learning C to get a solid
foundation in programming.
Conclusion
Learning data structures and algorithms is a responsibility and I will teach this
course in a way that is easy to understand for beginners. Don't worry if you
make mistakes or have trouble at first, just follow along step by step and
everything will become clear.
Data Structures & Algorithms for Placements
This course is primarily for those preparing for placements or job interviews.
Time is limited when preparing for placements, so this course is structured to
value your time. A 15-hour chapter on C with notes is available on the
channel, which will be covered first. If you're an advanced Java user or can
program algorithms in Python, then it's possible to do so. However, it's
recommended to learn C and C++ first.
Data structure is an arrangement of data in main memory, which refers to
RAM (Random Access Memory) of 2, 4, 8, 16, or 32 GB. The sequence of RAM
usage is important when loading a program like "chrome.exe" for Windows.
, Fiddling with data occurs in main memory, which must be arranged optimally
using data structures to minimize RAM usage.
The theory of databases is not covered in this course, but you should know
their basic concepts. When opening a new tab, a large amount of data is
stored in a database that must be retrieved and updated regularly. Data
warehouses store data permanently for faster retrieval and updation for
analysis purposes. Legacy data needs to be stored separately from the main
system.
Sorting Algorithms
The example used here is sorting arrays in ascending or descending order. An
algorithm is a series of steps to create a process. When sorting an array, steps
must be taken to sort in ascending or descending order. The steps taken to
sort an algorithm into an array define the algorithm.
Data Warehousing and Big Data
Data is the fuel of big algorithms these days, so it's essential not to lose the
data. To prevent data loss, the data is separated from the main system and
stored in what is known as legacy data. Data warehousing, on the other hand,
deals with how to store legacy data efficiently in different types of
algorithms, analysis, and distributed systems that can handle huge databases
that regular applications or algorithms cannot. Big data is a separate field that
requires a different set of algorithms and analysis.
It's essential to understand data warehousing and big data, though they are
beyond the scope of this course. Do not use these terms, but understand
their significance. The best way to learn data structures and algorithms is to
study C programming, specifically stacks and heaps. In the context of C
programming, understand that the memory layout of a C program is divided
into segments, such as the stack, heap, and segments for static and global
variables.
Memory Layout of a C Program
The stack frame or activation record of the main function is always created
first, and subsequent activation records of other functions such as fun1 and
fun2 are created when called. Variables are created in their respective
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