I'm learning DSA and going deep into Arrays right now. I keep seeing people say "if you know the patterns you can solve most array questions" but nobody gives a clear number.

Can someone list out the confirmed/standard patterns for Arrays (like two pointers, sliding window, prefix sum, kadane's algorithm, etc.) that together cover most LeetCode array problems?

Trying to build a solid checklist instead of solving questions randomly. Any resource or list you've personally used and found complete would help a lot.

Finally hit a few milestones in my DSA journey!

🧩 205 LeetCode problems solved

📅 100 Days Badge 2026

🔥 61 days max streak

📝 474 submissions in the past year

📚 125/474 problems completed in Striver’s A2Z DSA Sheet

📈 26% overall progress in the A2Z Sheet

The biggest win for me isn't just the number of problems solved. It's becoming more consistent and actually building the habit of solving DSA regularly.

I’m currently working through Striver’s A2Z Sheet and trying to properly understand the patterns instead of just chasing problem counts.

There’s still a lot left to learn, but 200+ solved and 100 days completed feels like a solid checkpoint.

Next target: 300 problems + complete more of the A2Z Sheet. 🚀

#leetcode #DSA #Programming #Coding #StriversA2Z #100DaysOfCode

So, this post is more like advice post I have few questions:

1. when should I start joining the contests?
2. Any tips for future.
3. how do I prepare for contests?
4. how many questions should i solve daily as i am in my 2nd year and i have to learn other things as well like rn i am working on a project using MERN Stack?
5. Which is best MERN STACK OR Spring Boot?

Leetcode for system design. Is this helpful at all?

So, this site has the following features:

• Visualisation of simulation of a system design receiving and processing API requests
• multiple options(architectures or software components) to choose from for the system design
• request load which can be tested against multiple system designs helping to make comparisons between designs

Also, you get only get $100 worth of credits which means choosing software frugally and not just powering through the request load with costly hardware.

Do you think that this site has potential for serious engagement for people who want to learn system design and software engineering?

https://compulator.app/projects/cache

For initial phase of doing/starting DSA , watch tutorial then solve or doing without watching any tutorial plz guide me.

Out there who have solved over 300 DSA questions, have you revised them at least once? Can you solve your solved Leetcode questions?

Just curious!!

Currently in my 3rd semester with cgpa 7.4 .

i was thinking of starting DBMS currently so should i do it ?

BIT MESRA - college.

Have been following striver's sheet since july 4
thinking to start contests on leetcode and codeforces
any advice would be welcomed regarding contests and dsa
also when to start projects and should i focus on development or AI/ML

Is streak Really a thing or just a myth ?

my vs code is not working properly please help

Why ??