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Learn to be a Data Scientist in 3 Months: Algorithms and Data Structures

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What exactly is algorithms and data structures? Before learning how to become a master in data structures and algorithms,

it’s best to know what these two terms mean.

Data structure can be defined as a technique of organizing and collecting is

such a way that various operations can be performed on the collected data in an

effective way. It’s all about rendering data elements regarding some relationship for

better storage and organization.

Anything that can store data can be called a data structure hence Char, Boolean, and

Integer are all data structures. To be precise, they are known as Primitive Data Structures.

There are also complex data structures (Abstract Data Structure) which are used to store connected and large amounts of data.

Graphs, Linked Lists, Trees, Queues and Stacks are good examples of abstract data structure.

AlgorithmAn algorithm can be defined as finite set of logic or instructions that are written in a specific order to accomplish a particular

pre-defined task. It’s important to note that an algorithm is not a complete code

or program.

It’s rather a core logic of a problem that can be expressed as an informal high-level description as pseudo code or using a

flowchart. If an algorithm takes less time to execute and less memory space, it’s said to be fast and efficient. These two properties

measure any algorithm’s performance:

Space complexity is the total amount of memory space consumed by an algorithm during the execution process. In situations

where there’s limited memory or multi-user systems are adapted, space complexity should

be taken very seriously. Time complexity can be defined as the total amount of time needed by

the program to run to completion.

Whether you want to learn algorithms and data structures in 24 hours or 3 months, you need the following tips. The key to having a solid

foundation in algorithms and data structures is not memorizing everything. Okay, having a lot

of theoretical knowledge can be impressive but you’ll rarely use it. This is why you should start

with these two things:

Visualization of the data structure. Ensure that you fully understand what the data structure looks like, how it’s structured

(both in the abstract and physically) and what it feels like to use it. Draw it or

visualize it in your head so that you can understand the structure intuitively.

Learn how and when to use different data structures and their respective algorithms in your own code. As a student, this can be challenging as the assignments and exams

won’t impart this knowledge. Just know that you won’t master data structures until

faced with real-world problems.

How do I become a better programmer? Code, code, and code! If you want to know how to become a

better programmer, this is the most important step. Coding is difficult, but it’s the central piece of

programming. Through coding, you will discover your mistakes in threading, error handling, and designing. It’s also important not to just stop there. Throw away your first solution. The next solutions should fix the

problems.

Read the booksThere is a huge difference between a bad code

and a good code. So, how can you tell? The only way to tell the difference is by seeing a good

code and understand why that particular code is good. This is where books come in handy. The

best data structure and algorithm books will contain real life experiences from their authors.

Read good blogsReading blogs is not as good as reading books,

but it helps. Blogs are usually written by programmers themselves who share their personal experience and view which are

relevant to some people. The information present on blogs is usually small and straight to

the point hence easier to digest.

PracticeTo become a better programmer, you need to

practice algorithms, data structure, and design related problems. In doing so, you will take

better advantage of what is available. Keep in mind that data structure is the key to any

program hence a solid knowledge in it will help you in any problem-solving situation.

Talk to other programmersUnlike reading, talking isn’t passive.

Therefore, discussing and talking to a fellow programmer leads to a better

solution. This technique is also natural as your mind tends to revolve more

when you talk to others.

Algorithms and data structures interview questions

You have the tips and guidelines on how to become a better programmer. But do you know what to expect during an interview? Don’t worry, some of these questions are just basic algorithms and data structures

definitions. Some of the questions include:

Those are just but some of the few algorithms and data structures interview

questions. Always have an open mind when attending interviews as they may ask you anything. Keep in mind that an

interview isn’t an exam hence real-world problems may pop-up here and there.

In SumTo learn the basics of algorithms and data structures within a month is not

that hard. The best part is that you might be lucky to get a high paying job with this knowledge. However, you will

learn more as you do the job.

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