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If you're a complete beginner looking to get started with Data Structures and Algorithms (DSA) to eventually land a job at a top tech company like FAANG (Facebook, Amazon, Apple, Netflix, Google), here's a step-by-step guide to help you get started:
Step 1: Learn the basics of programming Before diving into DSA, it's important to have a good understanding of the basics of programming. This includes learning a programming language, understanding concepts like loops, conditional statements, functions, and more. There are many online resources available to learn programming, such as Codecademy, Khan Academy, Udacity, and more.
Step 2: Learn data structures and algorithms Once you have a good understanding of programming, you can start learning data structures and algorithms. Some of the most important data structures and algorithms to learn include arrays, linked lists, stacks, queues, trees, graphs, sorting algorithms (such as quicksort and mergesort), and searching algorithms (such as binary search). There are many online resources available to learn data structures and algorithms, such as Coursera, LeetCode, HackerRank, and more.
Step 3: Practice coding problems Practice coding problems is the key to getting better at DSA. Start with simple problems and work your way up to more complex problems. Many websites such as LeetCode, HackerRank, Codeforces, and more provide a wide range of coding problems to practice.
Step 4: Learn time and space complexity analysis It's important to understand the time and space complexity of your algorithms. This will help you to understand how your algorithms perform and optimize them for better performance. There are many online resources available to learn time and space complexity analysis, such as Big-O Cheat Sheet, Khan Academy, and more.
Step 5: Practice coding interviews Once you feel confident in your DSA skills, start practicing coding interviews. Many websites such as LeetCode, HackerRank, and more provide a wide range of coding interview questions to practice. It's important to practice under time pressure, as this is what you'll face in real coding interviews.
Step 6: Network and apply for jobs Finally, network with others in the tech industry and start applying for jobs. Attend networking events, job fairs, and conferences. Also, apply for internships or entry-level positions at tech companies. With enough practice and perseverance, you can land a job at a top tech company like FAANG.
BEST OF LUCK