I'm currently an engineering student eager to learn Data Structures and Algorithms (DSA) for upcoming placements, but I feel completely lost at the starting line. I don't even know where to begin. Here are my main concerns:
- Which topics should I tackle first?
- What order should I follow for topics?
- Where can I find the best learning resources?
- How much time should I dedicate to studying each day?
- What's the best way to practice without feeling overwhelmed?
Whenever I look online—on platforms like YouTube or coding sites like Leetcode and GeeksforGeeks—there's just too much information, and I end up stuck because I can't figure out what's best for my learning. Additionally, my problem-solving skills are pretty basic, which makes even the easiest questions feel tough.
If you could reset and start learning DSA from scratch, how would you go about it? I'm really willing to put in the work; I just need a clear plan or some reliable resources to follow.
4 Answers
To start with DSA, it really depends on your current programming knowledge. If you've taken any courses on data structures at your university, that would help a lot. I recommend following a structured roadmap like Neetcode's 150 problems; it's a solid list that covers many topics asked in interviews.
He also offers a beginners' crash course where he organizes problems into recognizable patterns like arrays, linking lists, recursion, sorting, binary search, and more. Focus on mastering each pattern one at a time. It's going to take time, and you'll need to practice regularly—but don't feel pressured to buy resources; there are plenty of free options out there!
If you're serious about learning, consider snagging a textbook like "Introduction to Algorithms" by Cormen. It's comprehensive and will give you a solid foundation. Just be ready for some hefty reading and exercises, though!
That book is over 1300 pages! Are you serious? How do you expect me to get through that?
Don't worry too much about advanced math for now. DSA mostly requires logical thinking and basic arithmetic skills. You'll encounter a bit of probability and patterns, but for job placements, strong logical reasoning and practice are more crucial than heavy math. Let me know if you want more insights on what specific math you might need for interviews!
I'd like more clarity on that study plan—should I focus on arrays for a whole week or mix different topics?
You can also check out GeeksforGeeks and start with the basics there. For every problem you face, they have related articles that can help clarify concepts. It's especially useful if you're leaning towards competitive programming.
True! But sometimes I feel like I forget what I just learned. Any tips to retain info better?
Have you tried any patterns on that list? I'd love some guidance on where to start!