✅ DSA Roadmap for Coding Interviews 🧠💻

1️⃣ Start with the Basics
– Learn Time & Space Complexity
– Understand Big O notation

2️⃣ Master Arrays & Strings
– Sliding window, Two pointers, Prefix sum
– Practice problems like: Two Sum, Move Zeroes

3️⃣ Dive into Hashing
– Use HashMap/HashSet for fast lookups
– Problems: Longest Substring Without Repeat, Group Anagrams

4️⃣ Linked Lists
– Learn traversal, reversal, cycle detection
– Key problems: Detect Cycle, Merge Two Sorted Lists

5️⃣ Stacks & Queues
– Infix to postfix, parentheses validation, monotonic stack
– Problems: Valid Parentheses, Next Greater Element

6️⃣ Recursion & Backtracking
– Subsets, Permutations, N-Queens
– Key skill: build solution tree and backtrack correctly

7️⃣ Binary Search & Search Problems
– Classic problems: Search in Rotated Array, Koko Eating Bananas
– Understand upper/lower bounds

8️⃣ Trees & Binary Trees
– DFS, BFS, Inorder/Preorder/Postorder
– Problems: Lowest Common Ancestor, Diameter of Tree

9️⃣ Heaps & Priority Queues
– Top K elements, Min/Max heap use cases

🔟 Graphs
– BFS, DFS, Union-Find, Dijkstra’s
– Practice shortest path, connected components, cycle detection

1️⃣1️⃣ Dynamic Programming (DP)
– Start with 1D DP (Fibonacci, Climbing Stairs)
– Move to 2D DP (Knapsack, LCS, Grid Paths)

💡 Tip: Practice on LeetCode, Codeforces, GFG. Use patterns, not memorization.

💬 Tap ❤️ for more!

Every job interview has a "Do you have any questions?" part at the end.

But almost every candidate says "No questions from me" or doesn't ask good ones.

Here are 5 interview questions that you can ask to stand out and land offers:

1. I saw you did (XYZ) before joining
(COMPANY). What's your "why", and why did you decide to pursue a career here?

This question takes the interviewer out of the "interviewing" mindset and let's them talk more about their own journey. You can then mention how you relate to their journey, which creates empathy and a stronger connection with the interviewer.

2. If you looked back on this role a year later, what outcomes would indicate that this hire was successful?

This question allows you to see what they're looking for someone to accomplish in the role, and you can then answer their answer by showcasing how you'd do your best to achieve those outcomes.

3. What is the vision of the team in the next 6-12 months, and how would I contribute to having that vision come to life?

This question shows that you're forward-thinking and "in it to win it". You're also getting a deeper understanding of the goals your team has and how you'll play a part in achieving them.

4. What do you believe is the most important skill someone must have in this position?

This question allows you to identify the skill the interviewer wants to see in the candidate, and then you can turn the question back on them and share why you have that skills from your experiences.

5. What are next steps in the interview process, and when should I be hearing back?

This question gives you a timeline of how the interview process will go (if not shared already) and when you should follow-up if you don't hear back from the interviewer.

💰 Want to Build an App That Makes Money? Read This 🚀

Forget innovation. Focus on profit. Here's the strategy to build apps that actually earn:

🔥 4 Proven App Ideas That Work:
1. Solve a tiny, ignored problem.
2. Solve a big, common problem (even in crowded markets).
3. Use the “X for Y” formula (e.g., “Tinder for pet adoption”).
4. Build AI-powered tools using GPT models.

🎯 Follow the SLC Rule:
• Simple: 1–2 core features.
• Lovable: Great UI/UX (design matters!).
• Complete: Fully functional, not half-baked.

🛠️ Recommended Tech Stack:
• Frontend: Next.js + Shadcn UI + Tailwind CSS
• Backend: Supabase
• Analytics: PostHog
• Payments: Stripe

⚡ Use AI to Build Faster:
Tools like Bolt, V0, Cursor, and Lovable can generate code, UI, and workflows in minutes.

📅 1-Week App Launch Plan:
1. Outline with ChatGPT
2. Generate starter code with AI
3. Design with Mobbin/ Pageflows
4. Customize ship it!

📢 Marketing = Non-Negotiable:
• Be loud on Reddit, WhatsApp, Twitter, LinkedIn, TikTok, YouTube, Instagram or Telegram
• Use SEO metadata
• Start organic, then scale with ads

💼 Mindset Shift: Code like a founder. Think users, revenue, and growth—not just features.

📌 Double Tap ♥️ For More

✅ 15-Day Winter Training by GeeksforGeeks ❄️💻

🎯 Build 1 Industry-Level Project
🏅 IBM Certification Included
👨‍🏫 Mentor-Led Classroom Learning
📍 Offline in: Noida | Bengaluru | Hyderabad | Pune | Kolkata
🧳 Perfect for Minor/Major Projects Portfolio

🔧 MERN Stack:
https://gfgcdn.com/tu/WC6/

📊 Data Science:
https://gfgcdn.com/tu/WC7/

🔥 What You’ll Build:
• MERN: Full LMS with auth, roles, payments, AWS deploy
• Data Science: End-to-end GenAI apps (chatbots, RAG, recsys)

📢 Limited Seats – Register Now!

𝐒𝐐𝐋 𝐂𝐚𝐬𝐞 𝐒𝐭𝐮𝐝𝐢𝐞𝐬 𝐟𝐨𝐫 𝐈𝐧𝐭𝐞𝐫𝐯𝐢𝐞𝐰:

Join for more: https://t.me/sqlanalyst

1. Danny’s Diner:
Restaurant analytics to understand the customer orders pattern.
Link: https://8weeksqlchallenge.com/case-study-1/

2. Pizza Runner
Pizza shop analytics to optimize the efficiency of the operation
Link: https://8weeksqlchallenge.com/case-study-2/

3. Foodie Fie
Subscription-based food content platform
Link: https://lnkd.in/gzB39qAT

4. Data Bank: That’s money
Analytics based on customer activities with the digital bank
Link: https://lnkd.in/gH8pKPyv

5. Data Mart: Fresh is Best
Analytics on Online supermarket
Link: https://lnkd.in/gC5bkcDf

6. Clique Bait: Attention capturing
Analytics on the seafood industry
Link: https://lnkd.in/ggP4JiYG

7. Balanced Tree: Clothing Company
Analytics on the sales performance of clothing store
Link: https://8weeksqlchallenge.com/case-study-7

8. Fresh segments: Extract maximum value
Analytics on online advertising
Link: https://8weeksqlchallenge.com/case-study-8