Notesale: Turn your study into money

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05
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Even if you do not know
C++, you will still be able to follow along easily
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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
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I do not recommend Python or
JavaScript for beginners but rather suggest learning C to get a solid
foundation in programming
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Don't worry if you make mistakes or have trouble at first, just follow
along step by step and everything will become clear
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Time is limited when preparing for placements, so this course is
structured to value your time
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If you're an
advanced Java user or can program algorithms in Python, then it's
possible to do so
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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
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exe" for Windows
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The theory of databases is not covered in this course, but you should
know their basic concepts
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Data warehouses store data permanently for faster retrieval and updation
for analysis purposes
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Sorting Algorithms
The example used here is sorting arrays in ascending or descending order
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When sorting an
array, steps must be taken to sort in ascending or descending order
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Data Warehousing and Big Data

Data is the fuel of big algorithms these days, so it's essential not to
lose the data
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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
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It's essential to understand data warehousing and big data, though they
are beyond the scope of this course
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The best way to learn data structures and
algorithms is to study C programming, specifically stacks and heaps
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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
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To better understand memory usage, think
of it as "looking back at your memory" and "reading your memory back from
the page" to see what you need to access
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Understanding Heap Memory
When writing code, variables are stored in memory in a space called the
stack
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However, in
addition to the stack, there is also a space called the heap, which can
be used to allocate memory dynamically through the use of pointers
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In
C, you can use the malloc function to request dynamic memory in the heap,
while in C++, you can use the new operator
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Heap Memory
The heap is a large pool of memory in your computer's RAM that can be
allocated using a pointer
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Time and Space Complexity
Efficient use of memory is an important part of writing algorithms and
data structures
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Time and space complexity are both important
considerations when designing algorithms
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In the coming videos,
we will focus on data structures and algorithms

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