Computer Science Algorithms Road Map

Azmi ŞAHİN
3 min readFeb 28, 2023

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Algorithms are very important in computer science and are used to solve various problems. Here is a road map you can follow to learn algorithms:

Learn the Basics: Algorithms are based on mathematical concepts. Therefore, you must first master the basic mathematical concepts. These include number theory, algebra, geometry, probability theory, and statistics. You should also learn basic skills such as the basic principles of computational thinking and reading and writing mathematical expressions.

Algorithm Design: You must learn the basic techniques to design algorithms. Algorithm design is the design and implementation of appropriate algorithms to solve problems. At this stage, you can learn about algorithm design principles and strategies, complexity analysis, and efficiency of algorithms.

Algorithm Analysis: Analyzing algorithms is essential to determine their accuracy, efficiency, and time complexity. At this stage, you should learn to calculate the worst-case runtime and memory usage of the algorithms. You can also acquire the skills to mathematically prove the correctness of algorithms.

Programming Skills: To program algorithms, you must be proficient in a programming language. At this stage, you should learn the basic features and data structures in your chosen programming language. As a programming language, C++, Java, Python, Ruby and many more are available.

Application: After having theoretical knowledge of algorithms, you need to make practical applications. At this stage, you need to write algorithm applications and develop applications using various algorithms. You can also test yourself by participating in algorithm competitions.

Advanced Topics: Advanced algorithm topics include dynamic programming, parallel computing, distributed systems and network algorithms. Mastering these topics will contribute more to algorithm expertise.

Don’t worry, we can take a common problem in daily life as an example of algorithm design to understand how easy it is: cooking.

Problem Determination:
How many ingredients do we need to cook, what food we will cook, how long it will take, etc. We need to answer questions.

Step-by-Step Method Determination:

Choosing the recipe
Procuring the necessary materials
Chopping, cutting, etc. making transactions
cooking food
Serving the food
Application Method:
According to the recipe of the dish we have chosen, we will gather the necessary ingredients and chop, cut, etc. After we’re done, we cook the food. We serve the food after cooking.

Analysis of the Algorithm:
Does the algorithm we designed for cooking give the right result? In order to achieve the result (food) we want to achieve, we need to follow the correct methods step by step. If there is an error in the operation of the algorithm, it may not be able to make the food or it may not be of the expected quality.

This example is a simple example of handling a problem encountered in everyday life according to algorithm design principles. When dealing with any problem, defining the problem, determining step-by-step methods, applying these methods and analyzing the results are the basic principles for designing an algorithm.

Another example, let’s say you want to write an algorithm for making a peanut butter and jelly sandwich. Here are the steps you might include:

  1. Get two slices of bread, a jar of peanut butter, and a jar of jelly.
  2. Using a butter knife, spread peanut butter on one slice of bread.
  3. Using a different butter knife, spread jelly on the other slice of bread.
  4. Put the two slices of bread together, with the peanut butter and jelly sides facing each other.
  5. Cut the sandwich in half, if desired.

When a computer follows this algorithm, it knows exactly what steps to take to make a peanut butter and jelly sandwich. Algorithms are used in many different areas of computer science, including data analysis, image processing, and artificial intelligence.

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